Ensuring a Sustainable Future:
An Energy Management Guidebook
for Wastewater and Water Utilities
JANUARY 2008
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Table of Contents
FOREWORD 1
OVERVIEW 2 to 4
How This Guidebook is Organized 5 to 9
Characterization of Your Utility
Crosswalk of Plan-Do-Check-Act Approach
PLAN
SESSION 1: Getting Ready 10 to 18
Module 1: Establish your utility's energy improvement goals
Module 2: Secure and maintain management commitment, involvement, and visibility
Module 3: Choose an energy "fenceline"
Module 4: Establish energy improvement program leadership
Module 5: Secure and maintain employee buy-in
Module 6: Communicate results
SESSION 2: Assessing Current Energy Baseline Status 19 to 33
Module 1: Benchmark energy efficiency information
Module 2: Conduct an energy assessment or baseline audit
Module 3: Review legal and other requirements and establish a compliance baseline
SESSION 3: Establishing an Energy Vision and Priorities for Improvement 34 to 43
Module 1: Develop an energy policy
Module 2: Identify activities and operations that consume energy
Module 3: Prioritize activities/operations and potential energy improvement efforts
SESSION 4: Identifying Energy Objectives and Targets 44 to 50
Module 1: Establish energy objectives and targets
Module 2: Define performance indicators
DO
SESSION 5: Implementing Energy Improvement Programs and Building a
Management System to Support Them 51 to 62
Module 1: Develop action plans to implement energy improvements
Module 2: Develop management system 'operating controls' to support energy improvements
CHECK & ACT
SESSION 6: Monitoring and Measuring Your Energy Improvement Management Programs 63 to 71
Module 1: Review what you currently monitor and measure for energy
Module 2: Determine what else you need to monitor and measure for your priority energy improvement operations
Module 3: Develop a plan for maintaining the efficiency of energy equipment
Module 4: Review the progress of your energy targets
Module 5: Implement actions to adjust or correct when you are not progressing toward your energy goals
Module 6: Monitor/reassess compliance status
SESSION 7: Maintaining Your Energy Improvement Programs 72 to 76
Module 1: Continue to align energy goals with business/operational goals
Module 2: Apply lessons learned
Module 3: Expand involvement of management and staff
Module 4: Communicate success
CONCLUSION 77
Resources/Tools 78
APPENDICES
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FOREWORD
Providing wastewater and drinking water service to citizens requires energy and a lot of it. The twin problems of
steadily rising energy costs and climate change have therefore made the issue of energy management one of the most
salient issues facing wastewater and water utilities today. Energy management is also at the heart of efforts across the
entire sector to ensure that utility operations are sustainable in the future. More and more utilities are realizing that a
systematic approach for managing the full range of energy challenges they face is the best way to ensure that these
issues are addressed on an ongoing basis in order to reduce climate impacts, save money, and remain sustainable.
Working closely with a number of utilities and others, the Office of Water at the U.S. Environmental Protection Agency
(EPA) is proactively addressing this issue by developing this Energy Management Guidebook for Wastewater and Water
Utilities that provides a systematic approach to reducing energy consumption and energy cost.
This Guidebook was specifically written to provide water and wastewater utility managers with a step-by-step method,
based on a Plan-Do-Check-Act management system approach, to identify, implement, measure, and improve energy
efficiency and renewable opportunities at their utilities.
To accomplish these objectives, water and wastewater practitioners with experience in implementing energy efficiency
improvements played a major role in developing the Guidebook, serving as Steering Committee members, along with
EPA staff. Their experiences and insights were instrumental in the development of this guide.
U.S. EPA Project Officer
Jim Home
Office of Wastewater Management
Washington, DC
Steering Committee Members
Bob Bois
Environmental Compliance Officer
Springvale Water Treatment Plant
Natick, Massachusetts
Katie Jordan
Environmental/Safety Specialist
Osram Sylvania Products Inc.
Hillsborough, New Hampshire
Andy Kricun
Deputy Executive Director
Camden County Municipal Utilities Authority (CCMUA)
Camden, New Jersey
Jim Newton
Environmental Program Manager
Kent County Public Works Department
Dover, Delaware
Tom Pedersen
Vice President
Camp Dresser & McKee
Cambridge, Massachusetts
Mark Young
Executive Director
Regional Wastewater Utility
Lowell, Massachusetts
Anne Leiby
U.S. EPA Region 1
Gina Snyder
U.S. EPA Region 1
EPA also would like to thank the following
individuals that provided comments throughout
the Guidebook's development:
Linda Benevides
Massachusetts Executive Office of Energy and
Environmental Affairs
Leah Bowe
U.S. EPA Region 1
Catherine Hatcher
U.S. EPA, ENERGY STAR
Jean Holbrook
U.S. EPA Region 1
Jackie LeClair
U.S EPA Region 1
Jason Turgeon
U.S. EPA Region 1
Madeline Snow
University of Massachusetts - Lowell
Global Environment & Technology Foundation
THIS GUIDEBOOK WAS DEVELOPED UNDER CONTRACT NUMBER GS-10F-0337M WITH THE OFFICE OF WASTEWATER MANAGEMENT AT THE U.S.
ENVIRONMENTAL PROTECTION AGENCY
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Ensuring a Sustainable Future:
AN ENERGY MANAGEMENT GUIDEBOOK
FOR WASTEWATER AND WATER UTILITIES
As a water or wastewater utility manager, you are facing unprecedented challenges that include ever increasing:
0 Public expectations for holding rates/taxes while maintaining service standards.
0 Population shifts/increases.
0 Number and complexity of regulatory requirements.
0 Maintenance and replacement of aging systems/infrastructure.
0 Concerns about security and emergency preparedness.
0 Changing work force demographics.
0 Challenges in managing personnel, operations, and budgets.
Overlaying all these issues are steadily rising energy costs for your utility. Dealing with these rising costs will require
utilities to better manage their energy consumption and identify areas for improvement. Water and wastewater utility
energy consumption is generally on the order of 30-60% of a city's energy bill.1
The graphs below further illustrate the challenges faced by the water and wastewater utility industry. The first illustrates
the trend in electricity costs/kWh in New England from 1990 to 2007 and second characterizes operational energy use
from a National Association of Clean Water Agencies (NACWA) survey of water and wastewater utilities.2
.G
g
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O
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.0
i
.0
A n -
On _
c
c
New England Average Industrial Electricity Rate
(April of each year, from EIA)
^^
- . . x
,____ «^ ^>»
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Year
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National Association of Clean Water Agencies (NACWA)
Survey of Energy Use
47 Respondents used 2.1 billion kWh of electricity
Other
11%
Effluent reuse
pumping
25%
In-plant pumping
38%
Aeration
26%
i - Data from. Energy Information Administration, "The Current and Historical Monthly Retail Sales, Revenues and Average Revenue per Kilowatt hour by State and by
Sector," EIA-826. Available online at http://www.eia.doe.gov/cneaf/electricity/page/sales revenue.xls.
2 - T. Jones, "Water-Wastewater Committee: Program Opportunities in the Municipal Sector: Priorities for 2006," presentation to CEE June Program Meeting, June 14, 2006,
Boston, MA. Available online athttp://www.ceel.org/cee/mtg/6-06_ppt/iones.pdf.
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Energy represents the largest controllable cost of providing water or wastewater services to the public. Most facilities
were designed and built when energy costs were not a major concern. With large pumps, drives, motors, and other
equipment operating 24 hours a day, water and wastewater utilities can be among the largest individual energy users
in a community.
In addition, a review of a facility's energy performance may also identify other areas for operational improvements and
cost savings such as labor, chemicals, maintenance, and disposal costs. Finally, a thorough assessment of a facility's
energy performance may alert managers to other issues. An unexplained increase in energy consumption may be
indicative of equipment failure, an obstruction, or some other problem within facility operations.
Given these challenges, it is imperative for water and wastewater utilities to investigate implementing systematic
programs to minimize energy usage and cost, without sacrificing performance.
The purpose of this Energy Management Guidebook is to demonstrate to utility managers that it makes sound business and
environmental sense to utilize a management system approach to optimize energy conservation efforts. Specifically, this
Guidebook will present a management system approach for energy conservation, based on the successful Plan-Do-Check-
Act process, that enables utilities to establish and prioritize energy conservation targets (Plan), implement specific
practices to meet these targets (Do), monitor and measure energy performance improvements and cost savings (Check),
and periodically review progress and make adjustments to energy programs (Act). The Guidebook will also provide real
life examples of water and wastewater utilities who have already realized significant benefits through use of an energy
management program and provide a step-by-step process to show how to achieve the same benefits for your utility.
Similar to an operations plan, the Guidebook goes through the steps that a facility would take to understand their energy
use and set reduction goals, take actions, and make progress on achieving energy reduction targets.
By making a commitment to saving energy at your water or wastewater utility, you will also help maintain the confidence
of the public in the operations providing community services. In addition, by capitalizing on energy saving
opportunities, a municipality or county utility can exert some control over rising costs for ratepayers of utility services
as well as free up resources for other civic investments such as schools, police, or fire protection.
"Controlling our energy use saves money and creates budget capacity."
James L. Jutras
Water Quality Superintendent
Essex Junction, Vermont
"Energy production and usage have many areas of impact. Energy production is a major source of environmental impact and
includes impacts to air and water pollution and the depletion of natural resources. Energy usage takes costs from a facility's
budget that could be better spent on employee wages/benefits or to stabilize a utility's rate. A well thought out and implemented
energy management program will minimize the energy production and usage impacts and strengthen the position of your
utility."
Andy Kricun
Camden County Municipal Utility Authority
Camden, New Jersey
" A plan-do-check-act process is good for business and good for the environment. We can't do much about the weather and the
outside factors that drive bulk energy costs but we can commit to competitive volume purchases of energy and to employ energy
conservation efforts to effectively hold down the ever increasing costs and impacts of fossil fuel-based energy usage. This process
can help identify energy conservation opportunities."
Bob Bois
Springvale Water Treatment Plant
Natick, Massachusetts
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Total Estimated Annual Electricity Consumption - Wastewater and Water Treatment Facilities in
Massachusetts3
Estimated kWh/Mgal
Water and Wastewater as
% of all MA industrial
sectors
Wastewater treatment
(not including
distribution)
Water treatment and
distribution estimated
Totals for MA Water and
Wastewater Utilities
1,750
1,500
3,250
707,735,000
386,137,500
1,093,872,500
1.3%
0.74%
2.1%
$91,439,362
$49,888,965
$141,328,327
Note: Total kWh of all MA Industrial Sectors equals 9,602,457,000,
Total estimated annual emissions from energy consumption at Massachusetts wastewater and water facilities4
957,138 CO2 (tons)
4,190,045 SO2 (tons)
1,415,471 NOx (pounds)
*- FAST FACTS5-*
Drinking Water and
Wastewater Utility Energy
* Water and wastewater industries account
for an estimated 75 billion kWh of overall
U.S. electricity demand.
* Drinking water and wastewater systems
in the U.S. spend about $4 billion a year
on energy to pump, treat, deliver, collect,
and clean water.
* Energy efficiency investments often have
outstanding rates of return and can
reduce costs at a facility by 5%, 10%,
25%, or more.
* Loads expected to increase by 20% in
next 15 years due to increased
populations and more stringent
regulations.
* Energy costs for water and wastewater
can be 1/3 of a municipality's total energy
bill.
* If drinking water and wastewater systems
reduce energy use by just 10% through
cost-effective investments, collectively
they could save approximately $400
million and 5 billion kWh annually.
Drinking Water Utility
* There are 60,000 community drinking
water systems in the U.S.
* Majority of energy use: pumping.
* Energy use affected by: water source,
quality, storage, elevation, distance,
age, and process.
* Major processes: production, treatment
(disinfection), and distribution.
Wastewater Utility
* There are 15,000 wastewater systems,
including 6,000 Publicly Owned
Treatment Works (POTWs) in the U.S.
* Majority of energy use: treatment
process (aeration) and pumping.
* Energy use affected by: population,
influent loading, effluent quality,
process type, size, and age.
* Major processes: collection systems
(sewers and pumping stations),
wastewater treatment (primary,
secondary, and/or tertiary/advanced),
bio-solids processing, disposal, or re-
use.
Note: Reduction in greenhouse gases can also be realized through improvements in
energy efficiency. The U.S. Climate Technology Cooperation Gateway website's
(http://www.usctcgateway.net/tool) Greenhouse Gas Equivalencies Calculator is
designed to enable users to quickly and easily translate greenhouse gas reductions
from units that are typically used to report reductions (e.g., metric tons of carbon
dioxide equivalent) into terms that are easier to conceptualize (e.g., equivalent
number of cars not driven for one year).
3- MassDEP, 9/07. It should be noted that some states are exploring ways to integrate energy efficiency, renewable energy, and green building into State Revolving Funds
that provide low-interest loans for wastewater and drinking water projects. See the work that MassDEP is doing to promote the integration of renewable energy and
energy conservation into new or upgraded construction projects at http://www.mass.gov/dep/energy.htm.
4- Ibid.
5- See http://www.eere.energy.gov/industry/saveenergynow/partners/results.cfm for a list of industrial energy efficiency improvements; several case studies discuss return
on investment, often identifying measures"with payback of 1-4 years. Some individual measures, such as changing incandescent lights to compact fluorescent, often have a
rate of return of 100% or more. An example of a wastewater utility implementing a comprehensive package of improvements for a similar return on investment is the
Metropolitan Syracuse Wastewater Treatment Plant in Onondaga County, NY. See http://www.nrel.gov/docs/fy06osti/38076.pdf. The payback period was 13 months.
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How This Guidebook is Organized
Now that you have some information on energy costs and the potential energy efficiency savings for your water or
wastewater utility, you may be asking:
* What resources are available for me as a utility manager interested in pursuing energy efficiency at my
facility?
* How do I set and measure energy efficiency and renewable energy targets?
* Are there tools available to help me set and achieve energy goals?
* How do I align my energy goals with current programs already in place such as health and safety or
quality programs, Capacity, Management, Operations, and Maintenance (CMOM), and/or asset management
plans?
This Energy Management Guidebook will help you answer these and many other questions by taking you through the steps
necessary to set, manage, and achieve energy efficiency goals for your utility through the development and
implementation of a focused energy management program. These management programs can help you document
annual energy savings, decrease air emissions, and earn a return on their capital investment. The steps outlined in the
Guidebook are replicable and based on a Plan-Do-Check-Act process that will assist you in:
1. Benchmarking and tracking monthly and annual energy use;
2. Identifying and prioritizing energy operations and issues that can increase efficiency;
3. Identifying energy efficiency objectives and targets;
4. Defining the performance indicator(s) to use to measure progress towards your
energy targets;
5. Establishing energy management programs (i.e., action plans to meet your goals);
6. Monitoring and measuring the performance of your established target(s);
7. Documenting and communicating success; and
8. Reviewing your progress periodically and making adjustments as necessary.
As you begin to make the important decisions for your utility on energy efficiency and renewable opportunities, keep
in mind that there are a number of resources and management tools that are available to you as a water and wastewater
utility manager. This Guidebook will define and link you to those resources and tools, as well as identify how you can
align your energy efficiency plans with current management programs and tools that you use or may be implementing
at your utility.
Throughout this Guidebook, you will see step-by-step sessions, modules, and exercises along with real life examples from
water and wastewater organizations, so that you can successfully implement energy efficiency and renewable goals for
your utility. Each module will define objectives, provide an overview of the main concepts, have the user complete
exercises where applicable, and finally review the important takeaways specific to each module.
This Guidebook has been developed with significant input from water and wastewater utility professionals like you. They
face the same energy challenges and are committed to addressing these issues based on the step-by-step approach
described in the Guidebook.
Thank you for taking the first steps toward improved energy management at your utility.
, -- ** - ,
Plan
Jim Home
Office of Wastewater Management r. ,
U.S. EPA enecK uo
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You'll find the following icon symbols in each session:
Keys to Success indicates important takeaways to successful energy management
implementation as identified by water and wastewater practitioners.
o
Consider This highlights a point or concept important to energy management
implementation.
Reminders are key points to keep in mind.
Moving to the Next Session identifies key concepts for the next session and
the end of the current session.
TIP! identifies an important concept.
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Not sure how this Guidebook can help you? Review the table below to see what statement best characterizes your utility's
situation and find out what you should focus on and with what tools. Sessions referred to in the table below can be found
in this Guidebook.
Characterization of your Utility
If this characterizes your situation.,
"We are starting to think about ways to improve energy
management but don't know where to start."
Then focus on:
Developing an energy
management program
Use these tools:
Portfolio Manager Overview
(http://www.energystar.gov/index.cfm
?c=evaluate performance.bus portfol
iomanager): EPA's Performance
Track (www.epa.gov/perftrac/):
Session 1: Getting Ready
"We have completed the benchmarking tool and want to set
priorities for energy improvement efforts."
Conducting an energy audit
Session 2: Assessing Current Energy
Baseline Status; Session 3:
Establishing an Energy Vision and
Priorities for Improvement
"We are a member of EPA's Performance Track Program,
committed to reduce energy consumption and reduce
greenhouse gas emissions."
Establishing targets; developing
action plans; measuring and
monitoring results; evaluating
progress; aligning program with
operational goals
Portfolio Manager Overview
(http://www.energystar.gov/index.cfm
?c=evaluate performance.bus portfol
iomanager): Greenhouse Gas
Equivalencies Calculator
(http://www.usctcgateway.net/tool/):
Session 3: Establishing an Energy
Vision and Priorities for Improvement;
Session 4: Identifying Energy
Objectives and Targets
"We are using ENERGY STAR'S Portfolio Manager and have
identified specific areas for improvement."
Establishing targets; developing
action plans
Session 3: Establishing an Energy
Vision and Priorities for Improvement;
Session 4: Identifying Energy
Objectives and Targets
"We have completed an energy audit and want to set priorities for
energy improvement efforts."
Prioritizing activities;
establishing targets
Session 3: Establishing an Energy
Vision and Priorities for Improvement
"We have implemented some great energy improvement projects
but they don't necessarily:
connect to each other,
get managed as well as they could be,
measure for results, and/or
have procedures or systems to ensure they continue."
Measuring and monitoring
results; evaluating progress;
aligning program with
operational goals
Portfolio Manager
(https://www.energystar.gov/istar/pmp
am/): Session 5: Implementing
Energy Improvement Programs and
Building a Management System to
Support Them; Session 6: Monitoring
and Measuring Your Energy
Improvement Management Programs
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If this characterizes your situation.,
Then focus on:
Use these tools:
"We are part of an EPA, state, regional or municipal program to
reduce energy consumption greenhouse gas emissions."
Assessing emission footprint
Portfolio Manager
(https://www.energystar.gov/istar/pmp
am/): NEPOOL emission factors
(www.iso-ne.com): Session 6:
Monitoring and Measuring Your
Energy Improvement Management
Programs; Session 7: Maintaining
Your Energy Improvement Programs
"We have ideas or proposals for energy improvements including
renewables."
Developing action plans,
identifying resources
Portfolio Manager
(https://www.enerqystar.qov/istar/pmp
am/): NEPOOL emission factors
(www.iso-ne.com): DSIRE
(www.dsireusa.org): Session 1:
Getting Ready; Session 3:
Establishing an Energy Vision and
Priorities for Improvement; Session 4:
Identifying Energy Objectives and
Targets
"We have an asset management system and want to look at ways
to improve energy management."
Reviewing Crosswalk Table
page 9; Incorporating energy
aspects into the management
system
Session 1: Getting Ready; Session 2:
Assessing Current Energy Baseline
Status
"We are developing an Environmental Management System and
want to incorporate energy improvements into its development."
Reviewing Crosswalk Table
page 9; Incorporating energy
aspects into the management
system
U.S. EPAs PEER Center
(www.peercenter.net): Session 3:
Establishing an Energy Vision and
Priorities for Improvement
"We have a functioning Environmental Management System and
want to add in energy improvements and/or renewables."
Reviewing Crosswalk Table
page 9; Incorporating energy
aspects into the management
system
DSIRE (www.dsireusa.org):
Session 4: Identifying Energy
Objectives and Targets; Session 5:
Implementing Energy Improvement
Programs and Building a
Management System to Support
Them
"We have ISO 14001 certification and want to add in energy
improvements and/or renewables."
Reviewing Crosswalk Table
page 9; Incorporating energy
aspects into the management
system
EPAs Performance Track
(www.epa.gov/perftrac/): Session 3:
Establishing an Energy Vision and
Priorities for Improvement; Session 4:
Identifying Energy Objectives and
Targets; Session 5: Implementing
Energy Improvement Programs and
Building a Management System to
Support Them
"We have set energy targets and want to measure performance
and communicate our results."
Measuring and monitoring
results; evaluating progress;
developing communication
strategy
Session 6: Monitoring and Measuring
Your Energy Improvement
Management Programs; Session 7:
Maintaining Your Energy
Improvement Programs
Session 1
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The Plan-Do-Check Act approach in this Guidebook corresponds to the guidelines or other approaches such as ENERGY
STAR. This means that if you are already using another process, this Guidebook will support your efforts as well as give you
additional tools and assistance in focusing on energy improvements.
Crosswalk of Plan-Do-Check-Act Approach
Guidebook Section ENERGY STAR Asset Management IS0 14001 Environmental ANSI/MSE 2000: A Management
Management Systems System for Energy
I. Getting Ready
2. Assessing Current
Energy Baseline Status
3. Energy Vision and
Priorities for
Improvement
4. Objectives and Targets
5. Energy Improvement
Management Plans
6. Monitoring and
Measuring
7. Maintaining Energy
Improvement
Programs
Stepl: Make
Commitment
Step 2: Assess
Performance
Step 1.3: Institute
an Energy Policy
Step 3: Set Goals
Step 4: Create
Action Plan
Step 5: Implement
Action Plan
Step 6: Evaluate
Progress
Step 7: Recognize
Achievements
Make a commitment (e.g.,
establish a policy) and
determine asset
management planning
needs and prepare
management and staff
through early and on-going
communication and training
Step 1: Taking an inventory
of assets
Step 1: Taking an inventory
of assets
Step 2: Prioritizing assets
Step 3: Developing an
asset management plan
Step 4: Implementing an
asset management plan
Step 5: Reviewing and
revising asset management
plans
Make a commitment (e.g.,
establish a policy) and
determine environmental
management planning
needs and prepare
management and staff
through early and on-going
communication and training
4.3.1 Environmental
Aspects and Impacts
4.3.2 Legal and Other
Requirements
4.5.2 Evaluation of
Compliance
4.2 Environmental Policy
4.3.1 Environmental
Aspects and Impacts
4.3.3 Objectives and
Targets and Environmental
Management Programs
4.3.3 Objectives and
Targets and Environmental
Management Programs
4.4.1 Resources, Roles,
Responsibility, and
Authority
4.4.2 Training, Awareness,
Competence
4.4.3 Communication
4.4.6 Operational Control
4.4.7 Emergency
Preparedness and
Response
4.5.1 Monitoring and
Measuring
4.5.2 Evaluation of
Compliance
4.5.3 Nonconformance
and Corrective Action and
Preventive Action
4.5.5 EMS Audits
4.6 Management Review
4.0 Management Systems for
Energy
5.0 Management Responsibility
5.1 Management Commitment
5.3 Strategic Planning
5.4 Responsibility and Authority
6.0 Energy Management Planning
6.1 Energy Profile
6.2 External information
6.3 Energy Assessment
5.2 Energy Policy
7.0 Implementation and Operation
7.1 Purchasing
7.2 Facility, Equipment, and
Process Control
7.3 Energy management projects
7.4 Control of outsourced energy
services
7.5 Communication
7.6 Training, Competence, and
Awareness
8.0 Checking and Evaluation
9.0 Management Review
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SESSION 1: Getting Ready
You may be eager to plunge directly into starting energy programs, but before
you do, it is important that you prepare your utility for the effort. Take the time
to lay the foundation for energy improvement programs using a systematic
Plan-Do-Check-Act management system approach. Investing the time and
effort now will make a difference later on.
To successfully implement programs that improve energy efficiency,
conservation, and use of alternative or renewable sources of energy, you will
need to:
1. Establish your utility's energy improvement goals;
2. Secure and maintain management commitment, involvement, and
visibility;
3. Choose an energy "fenceline";
4. Establish energy improvement program leadership;
5. Secure and maintain employee buy-in; and
6. Communicate results.
First let's review a few terms that you will need to understand.
Energy Program Manager: The person who has the responsibility and
management authority for implementing your energy improvement programs
from start to finish.
Energy Improvement Goal: A quantifiable energy efficiency objective that your
utility has made a decision to achieve.
Energy Fenceline: The scope of your operations where you will focus your
energy improvement goals and where they will be implemented. For example,
across all utility operations, within a particular operation (e.g. biosolids), or for
one utility component (e.g. pumps).
Energy Team: A core team made up of individuals at your facility that will help
facilitate and implement energy improvement programs. These are the people
within your utility with knowledge of utility processes and energy usage and
will help communicate the importance of energy improvement to utility staff.
Generally, the Energy Team is composed of employees from various levels and
functions who will assist in the design, implementation, and evaluation of your
energy improvement programs. The Energy Team is made up of employees
and staff who are closest to the actual work in the operations of your scope or
fenceline and who can bring a huge amount of institutional expertise and
operational experience that is critical to a strong energy improvement program.
The Energy Team plays an important leadership role in planning, delegating
tasks, establishing deadlines, collecting and evaluating work, and providing
training, guidance, and assistance as needed. The Energy Program Manager
heads the Team, and together they become the organization's energy experts
and champions.
Plan
Keys to Success
0 Management commitment
and support
0 Active and meaningful
engagement of staff
0 Ability to build on existing
processes and projects
0 Effective leader and team
0 Balancing the need for 'quick
hits' with longer term
changes
0 Communication of
meaningful results
Session 1
10
-------
Energy Team members should possess the following qualities:
Knowledge of their operational and functional areas,
Good communication and listening skills,
Enthusiasm and commitment, and
Respect and trust by employees and managers.
You may be able to use existing teams or groups that have been created in your
utility or municipality. Some organizations enlist volunteers for their team,
others delegate and assign members. Keep in mind that the Energy Team needs
the authority as well as the responsibility to drive energy improvement
programs and support their implementation.
Working as a Team
There are many ways to start work as an Energy Team. Try these training
exercises to build an effective Energy Team within your organization.
Identify and make a list of all the policies, standard operating
procedures, and/or training related to energy currently in place in
your utility.
Identify and list all the management systems or programs your
utility has developed [e.g., CMOM, Asset Management, National
Biosolids Partnership].
Identify and list all the energy projects your utility is currently
undertaking.
Session 1
11
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MODULE 1: Establish Your Utility's Energy Improvement Goals
Module Objective: Identify how to align energy improvement goals with your current management, operations, and/or
maintenance plans and policies.
In developing energy improvement programs, take the time to understand how they fit in with your utility's mission,
goals, and strategic direction. Does your utility, board of directors, municipality, rate-payers, and general public want to:
* Reduce (control) energy costs by reducing/controlling energy use?
* Set an example for other public entities?
* Demonstrate leadership in sustainability or energy conservation initiatives and do the right
thing for the environment?
* Help your state or community implement its Climate Change Action Plan and contribute to reducing
greenhouse gas generation and other air pollution?
* Increase the use of renewable energy and alternative fuels, leading towards energy
independence from foreign fuel sources?
* Enhance the utility's or municipality's public image?
If the answer to any of these questions is "yes," you're on the right path to identifying energy improvement goals that will
align with your utility's objectives and plans.
Also, you may want to check to see if your community has a Climate Change Action Plan
(http://www.iclei.org/index.php?id=1387®ion=NA) and coordinate your activities with the municipal lead or
committee that is implementing the plan.
©
CONSIDER THIS...
Ensure that your energy improvement goals align with and build on your current and/or planned utility
management programs and plans.
Session 1, Module 1 12
-------
MODULE 2: Secure and Maintain Management Commitment, Involvement,
and Visibility
Module Objective: To learn how to obtain and sustain management
support for your energy improvement goals.
One of the most important steps in planning energy improvement
programs is to gain top management's commitment and support. It is
critical that commitment and support comes from both local (municipal)
leadership and your organization's top and middle management as well
as the union leaders. In fact, experience has shown that public
organizations who attempt to implement energy improvement programs
without top management support are unsuccessful.
During your preliminary discussions with management, you'll want
them to clarify their specific goals and expectations. Find out what really
motivates decision makers. Is it cost savings? Avoiding rate increases?
Other pressures or aspirations?
Remember
Just like the rest of the employees,
I senior managers will need training
to increase their awareness and
understanding. Short, frequent sessions that
address managers' concerns and provide
examples of the benefits other utilities have
realized in energy improvement programs are
the most successful ways to keep management
up-to-date, interested, and involved.
Confirm that senior managers at your utility understand:
The implementation strategy and schedule you are using,
The estimated direct labor commitment involved,
When, how, and what to communicate to employees on a regular basis, and
How your energy program aligns with current management plans and programs.
Role of management:
Demonstrate real commitment to energy improvements,
Provide appropriate responsibility and authority designations, and
Ensure that operators are recognized for their efforts and contributions.
©
CONSIDER THIS...
Every organization implementing a new energy initiative or a management program has come to the same
conclusion about managementvisibility, commitment, and involvement are the keys to success. Be sure your
energy improvement programs include regular and frequent dialogue with management. They are more likely
to stay visible and involved if they have regular updates about the benefits and improvements your energy
programs are providing your utility.
Session 1, Module 2
13
-------
MODULE 3: Choose an Energy "Fenceline"
Module Objective:To learn how to determine which operations and
processes will be the focus of your energy improvement programs (i.e.,
your "fenceline").
You may not want to work on all energy opportunities in all buildings,
locations, processes, and/or operations at once. Which ones should
you work on first?
Consider selecting one operation or department as an energy pilot,
gaining confidence and experience as you develop improvement
programs. Personnel in the original fenceline can then become mentors,
trainers, or leaders as new areas of the organization implement energy
improvement programs.
Example Energy Fencelines for Water and Wastewater Utilities:
Water Supply or Wastewater Operations:
* Collection
Treatment
Distribution
Remember
Remember the rule: keep it super
simple (KISS). Starting with
. . - - smaller, more manageable operations
(or redundant operations), then expanding and
transferring the lessons learned and knowledge to
other departments is an option for your utility and
a good way to build momentum.
Aspect of Operations:
Pumping
Sludge handling
Heating, ventilation, air conditioning
(all buildings or a subset of buildings)
Lighting
(all buildings or a subset of buildings)
Departments:
Administration
Electrical maintenance
Structural maintenance
Mechanical maintenance
Once top management has confirmed the fenceline selection, it's time to pay a visit to the managers and supervisors in your
energy fenceline divisions. You'll certainly want to include all types of employees (e.g., union stewards, contractors,
temporary staff) in your discussions right from the start. The time you invest now in promoting awareness, understanding,
and buy-in, especially among managers and supervisors, will be time saved later in the process.
Questions to Consider When Selecting Your Fenceline:
1) Which of your operations consumes the most energy use and costs the most?
2) Which operations might get results that could be replicated to other operations?
3) Which of your operations has the most receptive management? Line supervisors? Employees?
4) Is there any place in the system where you are losing energy to gravity?
5) Where could you get some quick improvements and create success stories to share?
CONSIDER THIS...
Your energy improvement program scope or fenceline should be manageable so that people don't get
overwhelmed or paralyzed, but noteworthy enough to document and build on success.
The Fenceline Golden Rule: Don't bite off more than you can chew.
Session 1, Module 3
14
-------
MODULE 4: Establish Energy Improvement Program Leadership
Module Objective: To establish effective leadership for energy improvement programs.
"Leadership comes in many forms and at
different times. Be prepared to jump on
it when it raises its head. "
Bob Bois
Springvale Water Treatment Plant
Natick, Massachusetts
Selecting an Energy Program Manager
For any initiative or program to be successful, you need a person who is
effective at leading projects, someone who can take the responsibility and
be trusted with the authority for developing, implementing, and
maintaining your energy improvement programs. This person must have
the designated authority from management to get the job done and have
a level of management authority themselves - this is pivotal to drive the
success of your energy programs.6
You have all been members of a team at some point in time. You may also have
been the leader of a project or team. Leading initiatives and programs requires:
Knowledge of operations,
Good project management, organizational, and communication skills,
Trust and respect of staff,
Commitment and enthusiasm, and
The ability to listen to others who have different perspectives and
ideas.
Your Energy Program Manager will assume new responsibilities in addition to
existing ones. Be sure the Energy Program Manager and town and/or plant
management understand the scope of the work, including the number of hours
you expect will be involved. All will need to be willing at times to redistribute
some responsibilities to others in the organization.
In addition to typical project manager responsibilities, the Energy Program Manager will:
Build and lead the Energy Team,
Plan the project and implementation schedule,
Gather, organize, and disseminate information,
Delegate tasks and establish deadlines,
Facilitate top management visibility and involvement,
Obtain cross-functional support and buy-in, and
Regularly meet and communicate with top management
about the benefits and status of implementation.
TIP!
An Energy Team can include
'jg' people from across your utility
or municipal departments (e.g.,
engineering, finance, human resources,
operations, municipal electric
department, etc.) and include members
from all levels of the organization.
Members can even be pulled in from
operations outside the scope of the
fenceline. If your municipality already
has an energy team or committee,
connect with them.
Remember
Your water or wastewater utility
may already have managers and
_.,-' staff that understand energy issues
and are leaders in managing teams
and programs. It is extremely beneficial to have
senior management designate one or two people
from these groups to become leaders in
developing and managing your energy
programs.
6 - To review a useful guide on team building from King County, WA, follow this link: (http://www.resourcesaver.com/file/toolmanager/CustomO73C230F53915.pdf)
Session 1, Module 4
15
-------
Apply Your Knowledge
Sit down with your Energy Team and fill out the table below to identify and document energy programs and information
that your utility has implemented.
Worksheet of Previously Implemented and Planned Energy Improvement Projects
Energy Use Projects
Results Who did you Were there Current
How will
completed ($, gallons, communicate associated activities in you measure
kWh,
normalized if
possible)
results to?
Who could What SOPs,
you training and
training,
records?
planning results? communicate records will
results to? be needed?
o
CONSIDER THIS...
Your energy improvement program scope or fenceline should be significant enough to document success
and build on that success and momentum, but manageable enough that people don't get overwhelmed or
paralyzed. It's important to keep things moving, so remember to remain flexible and fluid. Keep it super
simple. The management system approach relies on checking and acting to continually review your work,
so there will be many opportunities along the way to make improvements and course corrections.
Session 1, Module 4
16
-------
MODULE 5: Secure and Maintain Employee Buy-In
Module Objective: Establish employee buy-in for your energy improvement programs.
The same methods that you used for gaining management support can be
applied to gaining employee buy-in.
Get key employees involved early and often. It's important to get
employee support from the beginning through ongoing, consistent, and
open dialogue. Employees should understand what the organization
wants to accomplish through its energy improvement programs. This
can go a long way toward gaining support and answering the questions
"what's in it for me" and "what will be required of me?" Communicate
and ask employees for their interests and concerns during the planning
stages and throughout implementation.
Ultimately, your organization will want to institutionalize energy
conservation, efficiency, and energy renewable efforts and create an
atmosphere or culture where looking for energy improvement opportunities becomes business as usual.
J__i^ Remember
J t / , Involving a cross section of
, *UJ^ employees from departments
-__- across the organization early in
program planning is the best way to
promote short and long-term commitment
throughout the organization. Plus, it's a
great way to gain support and ensure buy-
in for your energy improvement programs
and the management system that supports
them.
"It is important to identify how each
person's fulfillment of their individual role
connects to the utility's ability to realize the
overall goals of the program. It is critical
that everyone understands why it is
important for them to do things in a certain
way and how that contributes to the utility's
overall success. That, I have found, is the
best way to get employee buy-in, because
they take ownership in the process. "
Andy Kricun
Camden County Municipal Utility Authority
Camden, New Jersey
Ideas for building a team approach and involving employees from the
very beginning include:
Holding a kick-off meeting and inviting top management (this
helps everyone see this effort as a priority).
Talking this effort up with employees, union stewards,
middle managers, 2nd shifters, etc.
Spending time talking with your operators and plant staff.
Having one-on-one conversations with team members can
identify their needs, concerns, and problem areas.
Asking employees on the front-line what changes they might like to
see in their operations as a result of this effort.
Posting signs and information on bulletin boards in lunch-rooms and
near coffee and copy machines to familiarize staff with energy issues.
Advertising early successes to keep management and employees
aware and interested.
o
CONSIDER THIS...
Employee dialogue, buy-in, and involvement will help ensure that your efforts to improve energy efficiency are
realistic, practical, and add value.
Session 1, Module 5
17
-------
MODULE 6: Communicate Results
Module Objective: To learn effective ways to communicate your energy improvement goals.
"It's important to be flexible, to listen,
and adapt to the needs of staff and the
organization. "
Bob Bois
Springvale Water Treatment Plant
Natick, Massachusetts
People are too often hesitant to communicate the status of an effort until
something "big" happens or they have achieved huge results. Make the
time to communicate the status of the efforts to develop energy
improvement programs, including small milestones, quick updates, or
findings. As an example, the Energy Team could package and
communicate its initial inventory of energy projects (from the exercise on
page 16) and use the communication as an opportunity to confirm that
all current projects have been captured.
Mark your calendar to make sure that you are communicating something
every month at a minimum, and preferably twice a month.
o
CONSIDER THIS...
Communicate your energy improvement goals frequently with staff. This will help ensure involvement and
buy-in to your goals.
Session 1 Resources & Tools
Public Entity EMS Resource Center: http://www.peercenter.net
EMS Handbook for Wastewater Utilities: http://www.peercenter.net/ewebeditpro/items/OllF10698.pdf
ENERGY STAR Challenge Toolkit: http://www.energystar.gov/index.cfm?c=implement plan.communication plan
Moving to the Next Session
In Getting Ready, you developed the key to early success for any energy program initiative: identification and alignment
of goals with your utility's or municipality's overall management strategy. Frequent communication and involvement
of management and staff builds credibility and ensures senior management visibility and commitment throughout the
program. Having established a communications process should ensure that the team will be getting feedback and
continued resources to do its job.
In the next Session, the Energy Team, with the help of utility staff, will begin to determine your utility's current energy
program status by benchmarking your utility and conducting an energy audit and compliance review to baseline data.
Session 1, Module 6
18
-------
SESSION 2: Assessing Current Energy Baseline Status
Before identifying areas for improvement, a water or wastewater utility
will need to understand its current energy management programs, energy
consumption, and its compliance with relevant regulations.
Key questions that will have to be answered include:
How much energy is currently used overall for each process
and what are the associated costs?
How does your utility compare to the typical energy
consumption for similar facilities?
Do emissions from direct energy use fall within the permitted
amounts?
What other legal requirements related to energy
(e.g., emissions) should be considered?
A baseline energy evaluation is the central element used for assessing your
energy consumption status. You may have already conducted energy
audits in the past. If so, you will be familiar with the process and should
already have a good amount of data.
To successfully implement programs to improve energy efficiency,
conservation and the use of alternative or renewable sources of energy,
you will need to:
1. Benchmark energy efficiency information
Step 1) Collect baseline data
Step 2) Track monthly and annual energy use
2. Conduct an energy assessment or baseline evaluation
Step 3) Conduct a field investigation
Step 4) Create equipment inventory and distribution
of demand andenergy
3. Review legal and other requirements and establish a
compliance baseline
Let's first review a few key terms that will help you as you conduct the
energy audit.
Baseline Data: The starting point from which to track the achievement of
an energy improvement target. By establishing "normalized" baselines,
you can accurately measure how your utility's energy management and
consumption change over time due to seasonal and other variations. This
is particularly important since energy consumption may be affected by
changes in production, flow, load, weather, or other related factors.
For example, if you were measuring energy consumed for your facility's
HVAC system, you might want to establish a weather-normalized
baseline because the energy demand of this system will depend on the
amount of heating or cooling needed. The ENERGY STAR benchmarking
tool described on the subsequent pages does this automatically.
Plan
Keys to Success
0 What gets measured gets
managed
0 Keep data organized
0 Ensure consistent units and
timeframes
0 Be creative in assessing
processes and potential
changes
0 Focus on the biggest
opportunities first
0 Be ready to move on or
estimate if data doesn't exist
or can't be readily obtained
Session 2
19
-------
For pumps and other treatment equipment, consider comparing your energy
use per million gallons of water treated to normalize your data.
For more information on normalizing data, review EPA's Choosing a
Normalizing Factor Basis and Performance Track's Normalization Guidance
(http://www.epa.gov/perftrac/apps/nornializationMm).
Design Specifications: A pump, fan, motor, or other system is designed to
draw a given amount of electricity and do a corresponding amount of work.
Design specifications provide this information. By comparing the power
draw and the actual performance to the design specifications, you can see if
your system is working as it should.
Energy Conservation: A general term for measures to reduce energy
consumption. Energy efficiency, most often used to mean achieving the same
results with less energy or getting the most out of every watt includes many
types of technologies. Other types of energy conservation measures might
include eliminating or changing certain processes or behavioral changes that
do not involve a technology solution (e.g., turning off lights).
Energy Audit: A procedure undertaken to assess the current energy
performance and to identify opportunities for energy savings. An equipment
audit focuses on one type of system, such as pumps, HVAC systems, or
lighting. A process audit refers to wastewater treatment processes and
focuses on either one sub-set (such as aeration) or the overall treatment
process. A walk-though audit provides an initial and very general overview
of opportunities.
Intermittent Process: Many systems and processes do not run continuously
but rather only at specific times. In some cases, processes can be scheduled
to run during the night-time hours when grid power demand is low.
Load Profile: A variation of your energy demand over time that can be used
to plan how much power a facility will need to generate at any given time.
While most end users consume more power during the daytime, some users
such as water utilities can shift high-energy demand processes to off-peak
hours.
Session 2
-------
MODULE 1: Benchmark Energy Efficiency Information
Module Objective: To compare your energy performance to similar utilities.
Information on comparable wastewater treatment utilities is likely to be available through ENERGY STAR's Benchmarking
Tool (see text box). Local utilities of similar size and design are excellent points of comparison. Broadening the search,
one can find several resources discussing the "typical" energy consumption across the U.S. for a water or wastewater
utility of a particular size and design.
Some utilities will have an inherently higher or lower energy
demand due to factors beyond their control. For example, larger
plants will, in general, have a lower energy demand per million
gallons treated due to economies of scale. A plant that is large
relative to its typical load is going to have a higher energy demand
per million gallons treated. Some secondary treatment processes
require greater energy consumption than others. Still,
benchmarking allows a rough estimate of the utility's relative
energy performance. Benchmarking of individual components is
also useful. A survey of one's peers may identify what level of
performance can realistically be expected from, say, a combined
heat and power system or a specific model of methane-fueled
microturbine.
Apply Your Knowledge
Using EPA's Portfolio Manager, track energy use over time and
compare your utility to others in your region and across the nation.
EPA's energy performance rating, which is accessible online
through Portfolio Manager (see below), will rate the energy
efficiency of your wastewater treatment plant on a scale from 1 to
100. EPA's energy performance rating is normalized for location
and the impacts of year-to-year weather variations. The rating
system also allows you to manage facility flow rate, level of
treatment, and other operating characteristics.
In addition to tracking and rating energy use, Portfolio Manager
allows you to measure and track energy costs and carbon emissions
associated with the operation of your plant over time.
Available Resources for
Benchmarking
The ENERGY STAR program,
administered by the U.S. Environmental
Protection Agency (EPA) has developed an
Energy Benchmarking Tool for Wastewater
Utilities along with a series of Best
Practices. These are available at
www.energystar.gov/benchmark. For water
utilities, the ability to measure and track
energy use, energy cost, and carbon
emission and corresponding reductions will
be available in 2008.
Several reports on wastewater utility
energy demand have been developed for
the California Energy Commission
(http://www.energy.ca.gov/process/water/).
The American Water Works Association
(AWWA) Research Foundation has also
developed a guide to Best Practices for
Energy Management
(http: //www. awwarf. org/res earch/topic sand
projects/exec Sum/262 IB.aspx).
Establish a user account in Portfolio Manager
Go to http://www.energystar.gov/benchmark and login. If you do not already have a
user account in Portfolio Manager, click the New User link on the login page and follow the instructions.
Portfolio Manager allows you to import facility data into Portfolio Manager using a downloadable Excel
template. This minimizes manual data entry of large sets of facility data. This Excel-based upload template
(sample next page) is also useful as you gather and track your monthly energy use and costs. After
downloading the import template, carefully review the instructions as well as the Tips for a Successful
Import. Make sure your data is complete, particularly with regard to data that is required by Portfolio Manager
for rating purposes. When you have populated the import template, send it to buildings@energystar.gov and
upon review, your data will be uploaded into your account.
To allow other organizations access to your portfolio with either read-only or administrative rights, you can
share facility access with your Portfolio Manager account.
ENERGY STAR Criteria for Operating Characteristics for Wastewater Treatment Plant Requirements
Average daily wastewater flow in MGD > 0.6
Average influent BODS (biological oxygen demand) level 30 < mg/liter < 1000
Average effluent BODS (mg/liter) level > 0
Session 2, Module 1
-------
The template below provides an example of energy data from a wastewater utility that can be uploaded and tracked using
the Portfolio Manager tool.
Sample Portfolio Manager Upload Template
Facility Name Energy Meter Energy Type Start Date End Date Energy Energy Cost
ID Consumption
Wastewater
Wastewater
Wastewater
Wastewater
Wastewater
Wastewater
Wastewater
Wastewater
Wastewater
E223-455
E223-455
E223-455
E223-455
E223-455
E223-455
E223-455
E223-455
E223-455
Electricity
Electricity
Electricity
Electricity
Electricity
Electricity
Electricity
Electricity
Electricity
2/1/2007
1/1/2007
12/1/2006
11/1/2006
10/1/2006
9/1/2006
8/1/2006
7/1/2006
6/1/2006
2/28/2007
1/31/2007
12/31/2006
11/30/2006
10/31/2006
9/30/2006
8/31/2006
7/31/2006
6/30/2006
83,489 kWh
83,826 kWh
83,456 kWh
83,623 kWh
83,51 8 kWh
83,794 kWh
83,725 kWh
83,676 kWh
80,942 kWh
$3,520
$3,580
$3,485
$3,259
$3,325
$3,450
$3,440
$3,250
$3,350
o
CONSIDER THIS...
Benchmarking can be useful, but no two utilities are ever exactly the same. You'll have some
characteristics that affect your relative performance and are beyond a utility's control.
STEP 1: Collect Baseline Data
Step Objective: To learn how to identify, locate, and assemble the
information that can help you determine what you'll need to improve
your energy performance.
The first step in collecting baseline data for your utility is to determine
what data you already have available. At a minimum, have one full year
of monthly data for consumption of electricity, natural gas, and other
fuels - if you can get three years of data, even better. However, if you
don't have data going this far back, use what you have or can easily
collect. In addition, if you can get the data at daily or hourly intervals,
you may be able to identify a wider range of energy opportunities.
Remember
ENERGY STAR'S Portfolio
Manager can help your water or
.,,_."' wastewater treatment plant track
and assess energy consumption
across your entire utility. Follow this link
(http ://www. energystar. gov/ia/business/govern
ment/wastewater_fs.pdf) to view an ENERGY
STAR Water and Wastewater Focus Fact
Sheet.
Session 2, Module 1
22
-------
STEP 1 Continued...
Here are several data elements to document and track for your utility in order to review energy improvement
opportunities.
Water and/or wastewater flows are key to determining
your energy performance per gallon treated. For drinking
water, the distance of travel and number of pumps are
also key factors.
Electricity data includes overall electricity consumption
(kWh) as well as peak demand (kW) and load profiles if
available.
Other energy data includes purchases of diesel fuel, natural
gas, or other energy sources including renewables.
Design specifications can help you identify how much
energy a given process or piece of equipment should be
using.
Operating schedules for intermittent processes will help
you make sense of your load profile and possibly plan an
energy-saving or cost-saving alternative.
Keep in mind that energy units may vary. For example, captured methane or
purchased natural gas may be measured in 100 cubic feet (Ccf) or millions of
British Thermal Units (MMBTU). Develop a table like the one below to
document and track your data needs.
Data Need Units
Wastewater flow
Electricity consumption
Peak demand
*
Methane capture
Microturbine generation
Natural gas consumed
Fuel oil consumed
Diesel fuel consumed
Design specifications
Operating schedules
* *
Grease trap waste collected
Other (based on your utility)
MGD
kWh
kW
MMBTU
kWh
MMBTU
Gallons
Gallons
N/A
N/A
Gallons
TBD
Tools to Collect
Baseline Data
There are many software programs
for energy tracking (also known as
utility management, energy
accounting, or utility accounting).
Some of these programs can accept
automatic data entry directly from
your utility. ENERGY STAR
Portfolio Manager is useful not only
for tracking your energy data, but
also for comparing to similar
facilities.
Remember your existing accounting
system may already be tracking
energy costs.
Remember
Keep units consistent!
Note:
* Methane capture will apply only to plants that digest their sludge.
* * Collecting this type of data may provide you with a future renewable fuel source that could serve as a potential feedstock for biodiesel
and some locations can use it to generate electricity on site.
Session 2, Module 1
23
-------
STEP 1 Continued...
Consider any other quantities that you'll want to measure. Is there anything you would add to the list on the previous
page? Select units that your Energy Team is comfortable with and that your data is typically available in. If the data is
reported using the wrong units, you may have some conflicting or confusing results.
Units by themselves are not that informative; to be placed in proper context, they need to be associated with an interval
of time. Therefore, for the next step add another column to your table: "Desired Frequency of Data."
Remember, while knowing your utility's energy consumption per month is useful, knowing it in kWh per day is better.
With hourly consumption data, you can develop a "load profile" or a breakdown of your energy demand during the day.
If your load profile is relatively flat, or if your energy demand is greater in the off-peak hours (overnight and early
morning) than in the peak hours (daytime and early evening), your utility may qualify for special pricing plans from your
energy provider.
Typically, water and wastewater utilities have a predictable diurnal variation. Usage is most heavy during the early
morning, lags during the afternoon, has a second, less intensive peak in the early evening, and hits the lowest point
overnight. Normally, energy use for water and wastewater utilities could be expected to follow a pattern of water flows.
However, this effect can be delayed by the travel time from the sources, through the collection system, to the plant, or by
storage tanks within the distribution system to customers. A larger system will have varying travel times, whereas a
smaller system will have lower variability. Moreover, this effect can be totally eliminated if the plant has an equalization
tank.
If your utility is paying a great deal of money for peak demand charges, you might consider the capital investment of an
equalization tank. Demand charges can be significant for wastewater utilities, as they are generally about 25% of the
utility's electricity bill.7
Adding a column for Desired Frequency of Data, the updated table would look like this:
Data Need Units Desired Frequency of Data
Wastewater flow
Electricity consumption
Peak demand
Methane capture
Microturbine generation
Natural gas consumed
Fuel oil consumed
Diesel fuel consumed
Design specifications
Operating schedules
Million gallons
kWh
kW
MMBTU
kWh
MMBTU
Gallons
Gallons
N/A
N/A
Daily
Hourly if possible or daily if not
Monthly (if electric utility bills for peak monthly
demand)
Monthly
Monthly
Monthly
Monthly
Monthly
N/A
N/A
7- Water Environment Federation (1997), Energy Conservation in Wastewater Treatment Facilities, Water Environment Federation, Manual of Practice No. MFD-2, Alexandria,
VA.
Session 2, Module 1
24
-------
STEP 1 Continued...
Next, determine how you will collect baseline data. Energy data is recorded by your energy provider (e.g. electric utility,
natural gas utility, or heating oil company). A monthly energy bill contains the total consumption for that month, as well
as the peak demand. In some cases, your local utilities will record the demand on every meter for every fifteen-minute
interval of the year. Similar data may be available if you have a system at your utility that monitors energy performance.
Sources of energy data include the following:
Monthly energy bills vary in detail but all contain the most essential elements. The scope of the
analysis is in this case limited to a collection of one or more meters. If different systems are all on one
meter, the fenceline must be defined to include all of the systems.
The energy provider may be able to provide more detailed information. It will still be limited to
meters (and not broken out by sub-systems behind the meters), but it may include greater resolution of
hourly or quarter-hourly energy demand.
An energy management program (e.g., Supervisory Control and Data Acquisition - SCAD A)
automatically tracks energy data, often with sub-meters to identify the load on individual components. If such
a system is in place at your utility, you will have a large and detailed data set on hand.
Other data needs may also have a range of sources. Design specifications for equipment may be in manuals at your utility
but you may still need to contact the manufacturers for specific items. Add a column for "Data Source" and "Availability"
in your table.
Your energy provider can, in addition to providing raw data, offer you extensive expertise on energy-saving technologies,
practices, and programs as well as contractors who can help you implement certain types of improvements. It is
recommended that you meet early and often with your energy provider as you seek to improve your energy performance.
Example
Suppose that your utility has readily accessible data for its wastewater flow, microturbine generation, most of its design
specifications, and its operating schedules. The Energy Team has a contact at the electric utility that can provide detailed
information on electricity consumption and demand as well as a contact at the natural gas utility. No heating oil is used
and diesel fuel consumption is negligible so these rows are removed. However, the utility doesn't have a reliable record
of exactly how much methane is captured by its system. In this example, the table will look as follows.
Data Need Units Desired Frequency of Data Source Availability of Data
Data
Wastewater flow
Electricity consumption
Peak demand
Methane capture
Microturbine generation
Natural gas consumed
Design specifications
Operating schedules
Million gallons
kWh
kW
MMBTU
kWh
MMBTU
N/A
N/A
Daily
Hourly if possible, daily if
not
Monthly (if electric utility
bills for peak monthly
demand)
Monthly
Monthly
Monthly
N/A
N/A
Pump records
Electric utility and SCADA
Electric utility
Plant
Meter attached to unit
Natural gas utility
Equipment manuals,
nameplate ratings
Plant handbook
On-hand
Contact at utility
Contact at utility
Internal
On-hand
Contact at utility
Most on-hand, some will
have to contact
manufacturer
On-hand
Session 2, Module 1
25
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STEP 1 Continued...
Without data on methane capture however, the utility will be unable to determine the microturbine's efficiency. They'll
know how much electricity is produced but not how much fuel goes into the system in the form of methane. Although
this calculation may be important, you can revisit it at a later time, when more data becomes available.
Normalized Baselines
Remember, to accurately measure how your utility performance is changing over time, establish "normalized" baselines
where appropriate. Normalized baselines will measure your energy performance changes rather than changes in
production, customer demand, or other non-environmental related factors.
Utility Case Study: Village of Essex Junction Wastewater Treatment Facility (Appendix A)
The Village of Essex Junction, Vermont, with the support of Efficiency Vermont, has successfully implemented
microturbine technology at its 2.0 million gallons per day (MGD) average-flow, municipal wastewater treatment facility,
and has firsthand information on its financial benefits. To review more information on how Essex Junction reduced energy
and achieved cost savings from installing two microturbines at their 2.0 MGD wastewater utility, go to Appendix A.
Apply Your Knowledge
Develop energy baseline data using the blank tables in Appendix B. Consider your list of data needs. Where will you look
to find the information you need? Is the data readily available or will you have to do some digging?
Once the data collection has been completed, your Energy Team will develop a final table, changing "Desired Frequency
of Data" to "Frequency of Data." Also, since all of the data is now on-hand, you can remove the "Accessibility" column
and our example table would look like this.
Data Need Units Frequency of Data Source
Wastewater flow
Electricity consumption
Peak demand
Methane capture
Microturbine generation
Natural gas consumed
Design specifications
Operating schedules
Million gallons
kWh
kW
MMBTU
kWh
MMBTU
N/A
N/A
Daily
Hourly
Monthly
Monthly
Monthly
Monthly
N/A
N/A
Pump records
Electric utility
Electric utility
New gas meter attached to unit
Electric meter attached to unit
Natural gas utility
Equipment manuals, nameplate
ratings
Plant handbook
o
CONSIDER THIS...
More information can be helpful, but only to a point. Keep your data organized and don't get overwhelmed
or stuck looking for minor details. Be ready to move on and estimate if data doesn't exist or can't be easily
obtained. Remember that the systems that use the most energy will have the greatest impact on your baseline
and often have the greatest potential for energy savings.
Session 2, Module 1
26
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STEP 2: Track Monthly and Annual Energy Use
Step Objective: To learn how to conduct a preliminary analysis to look for trends in energy data.
Now that you have your data, take a look at it and see what patterns emerge. Determine the energy demand per gallon
of water or wastewater treated and see if this has changed over the baseline period. If you have annual energy
consumption data for the last few years, then that can be analyzed for trends as well. Are there changes attributable to the
replacement or installation of some piece of equipment? Are there seasonal variations in energy demand and in energy
cost? What about daily variations?
Putting the data into graphical form may help your utility perceive any trends and may be particularly helpful for
presenting results to those outside of the Energy Team. Make one graph of average daily energy consumption over time
and one graph of energy consumption per gallon of water or wastewater treated. You may also want to make a third graph
of energy costs over time, including purchased fuels as well as electricity. In addition, if greenhouse gas emissions (GHG)
are a consideration for your utility or municipality, you may want to take this time to track your energy-related GHG
emissions (direct emissions from fuel use and indirect emissions from energy).
Below is an example table indicating how you can track your monthly energy consumption. You can measure energy
usage in kWh per day or kWh per month; just remember to be consistent. Consider using the same time unit as you use
for treated water or wastewater flow so that you can see your energy demand per gallon treated. In the tables below, days
are used as the increment.
2006 Energy
Consumption
Average Daily
Consumption (kWh)
Peak Demand (kW)
Cost (cVkWh)
Daily Flow (million gallons)
January
February
March
April
May
June
July
August
September
October
November
December
Session 2, Module 1
27
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STEP 2 Continued...
Apply Your Knowledge
Use the table on the previous page - or a similar one based on your needs - to document and track the monthly and
annual energy use at your utility.
You may also wish to track overall energy demand per gallon of water or wastewater treated, especially if non-electricity
energy sources such as natural gas play a significant role in your treatment process. In this case, you will need a metric
that allows you to combine electricity and natural gas into a single measurement. Cost (in dollars) is one option, but cost
is heavily influenced by external market forces. Energy can be expressed in scientific units, such as megajoules (MJ) or
British Thermal Units (BTU), and it is possible to convert electricity, natural gas, and other fuel consumption into these
units. Alternatively, you can track each energy source separately. Be advised that this may give a misleading picture of
energy performance if you changed from one energy source to another such as replacing a natural gas heating system with
a ground-source heat pump powered by electricity).8
If you have the data, tracking annual energy consumption can show long-term trends. Here is an example tracking table.
Year Average Daily Consumption Peak Demand (kW) Cost (6/kWh in 2007) Daily Flow (million gallons)
(kWh)
2000
2001
2002
2003
2004
2005
2006
o
CONSIDER THIS...
Look for unusual trends in energy data and seek explanations.9 Rising energy expenditures may be due to
rising electricity prices, increased water flow, unusually cold winters, or equipment failures. All of which
can decrease your energy efficiency. Present your results in a way that conveys an explanation. In addition,
remember that specific analysis of energy and energy-related data is a key activity in developing an effective
energy management program.
8 - The Portfolio Manager tool will accept any unit and produce a normalized energy source intensity figure in kbtu/million gallons.
9- ENERGY STAR'S Benchmarking tool will use zip code and weather data to normalize for heating and cooling degree days.
Session 2, Module 1
28
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MODULE 2: Conduct an Energy Assessment or Baseline Audit
Module Objective: To learn the basics of conducting an energy audit.
The energy audit is an essential step in energy conservation and energy management efforts. Your utility or municipality
may have had an energy audit or energy program review conducted at some point. If so, find the final report and have
your Energy Team review it. How long did the process take? Who participated in ityour team, the electric utility,
independent contractors? What measures were suggested to improve energy efficiency? What measures were actually
implemented and did they meet expectations? Were there lessons learned from the process that should be applied to
future audits? In addition, if your facility's previous energy audit had recommended measures, determine if they are still
viable.
In many cases, electric utilities offer audits as part of their energy conservation programs. Independent energy service
companies also provide these services. An outside review from an electric utility or an engineering company can provide
useful input but it is important to ensure that any third party is familiar with water and wastewater systems.
Some energy audits focus on specific types of equipment such as lighting, HVAC, or pumps. Others look at the processes
used and take a more systematic approach. Audits focused on individual components, as well as in-depth process audits,
will include testing equipment. For example, in conducting the baseline energy audit, the Energy Team may compare the
nameplate efficiency of a motor or pump to its actual efficiency.
In a process approach, a preliminary walk-through audit is often used as a first step to determine if there are likely to be
opportunities to save energy. If such opportunities exist, then a detailed process audit is conducted. This may include
auditing the performance of the individual components as well as considering how they work together as a whole. Much
like an environmental management system initial assessment that reviews current status of regulatory requirements,
training, communication, operating conditions, and current practices and processes, a preliminary energy audit or energy
program review will provide your utility with a baseline of what your energy consumption is at that point in time.
Once you have collected your utility's baseline data and tracked monthly and annual energy use, there are two additional
steps to completing your energy assessment or baseline energy audit:
Step 3) Conduct a Field Investigation
Step 4) Create an Equipment Inventory and Distribution of Demand and Energy
For Your Information
States often maintain programs to assist municipalities and local agencies with energy management. For example, the
Massachusetts Division of Energy Resources (DOER) has an Energy Audit Program to support municipal wastewater
districts. The Audit Program provides each project participant with a list of energy conservation projects, their costs, and
estimated energy savings. For more information, visit DOER's Energy Grant informational website at
http://www.mass.gov/doer/pub info/grant-eap.pdf).
Several other states have similar programs. California has had remarkable success in funding energy audits at municipal
wastewater utilities. For example, an energy audit of the Eureka, California water and wastewater system cost the state
$15,800 and the identified capital improvements cost $56,800. However, the annual savings were $91,900 and the
improvements reduced the city's electricity bill by 34% .10
At the federal level, the U.S. Department of Energy offers free 1-day walkthroughs for smaller facilities through its Save
Energy Now Program (http://wwwl.eere.energy.gov/industry/saveenergynow).
10 - California Energy Commission (1990), The Second Report to the Legislature on Programs Funded Through Senate Bill 880, Sacramento, CA, cited in Water Environment
Federation (1997), Energy Conservation in Wastewater Treatment Facilities, Water Environment Federation, Manual of Practice No. MFD-2, Alexandria, VA.
-------
STEP 3: Conduct a Field Investigation
The field investigation is the heart of an energy audit. It will include obtaining information for an equipment inventory,
discussing process operations with the individuals responsible for each operation, discussing the impacts of specific energy
conservation ideas, soliciting ideas from your Energy Team, and identifying the energy profiles of individual system
components. The Electric Power Research Institute (EPRI) recommends evaluating how each process or piece of
equipment could otherwise be used. For example, it might be possible for a given system to be replaced or complemented
for normal operation by one of lower capacity; to run fewer hours; to run during off-peak hours; to employ a variable speed
drive; and/or to be replaced by a newer or more efficient system. Depending on the situation, one or more of these
changes might be appropriate.
STEP 4: Create Equipment Inventory and Distribution of Demand and Energy
This is a record of your facility's equipment, equipment names, nameplate horsepower (if applicable), hours of operation
per year, measured power consumption, and total kilowatt-hours (kWh) of electrical consumption per year. Other criteria
such as age may also be included. In addition, different data may be appropriate for other types of systems such as
methane-fired combined heat and power systems.
You may find that you already have much of this information in your maintenance management system (if applicable).
A detailed approach for developing an equipment inventory and identifying the energy demand of each piece of
equipment is provided in the 1997 book Energy Conservation in Wastewater Treatment Facilities: Manual of Practice No, MFD-
2, Water Environment Federation. The basics are presented here, but readers are encouraged to review the Manual of Practice
for a more thorough explanation.
Example utility equipment inventories and the relevant energy data to collect could include the following.
Motors and Related Equipment
Start at each motor control center (MCC) and itemize each piece of equipment in order as listed on the MCC.
Itemize all electric meters on MCCs and local control panels.
Have a qualified electrician check the power draw of each major piece of equipment.
Pumps
From the equipment manufacturer's literature, determine the pump's power ratio
(this may be expressed in kW/mgd).
Multiply horsepower by 0.746 to obtain kilowatts.
Compare the manufacturer's data with field-obtained data.
Aeration Equipment
Power draw of aeration equipment is difficult to estimate and should be measured.
Measure aspects related to biological oxygen demand (BOD) loading, food-to-microorganism ratio, and
oxygen-transfer efficiency (OTE). Note that OTE levels depend on type and condition of aeration equipment.
Actual OTE levels are often considerably lower than described in the literature or in manufacturers' materials.
Session 2, Module 2
-------
STEP 4 Continued...
Below is an equipment inventory example for pumps:
Pump Designation Installed Nameplate Rating Hours of Operation Measured Power kWh per Year
Per Year Consumption
Pump#1
Pump #2
Pump #3
Pump #4
1992
1994
1995
2002
200 horsepower
150 horsepower
80 horsepower
40 horsepower
2,000
4,000
4,000
5,000
200 kW
120 kW
70 kW
32 kW
400,000
480,000
280,000
160,000
Utility Case Study: Camden County (New Jersey) Municipal Utilities Authority (CCMUA)
By carefully reviewing their plant operations, the CCMUA developed a computerized system that shaved the peaks by
avoiding simultaneous use of energy-intensive process units and staggering the use, thereby minimizing the peak charge
from the energy company.
Apply Your Knowledge
Using the table above as an example, complete equipment inventory
worksheets for your utility using the blank equipment inventory
worksheets (or similar ones based on your needs) in Appendix C.
Although you can use the inventory worksheets in Appendix C, in practice,
you might find that you use several different types of inventory methods,
depending on the types of equipment that you are examining. Try to look
at each process or piece of equipment from a fresh perspective. Why is
each process run a certain way? Is it a stated requirement? Is it the best
way? Is it just tradition? Consider how processes interact with each other
and look at the overall system. Also, consider having a third party (e.g.,
local energy utility) work with the Energy Team as you conduct your field
investigation for a fresh perspective and review of your energy
consumption and management.
Resources & Tools
New England Power Pool (NEPOOL) has the emission factors for the New
England grid. The 2005 report is available at: http://www.iso-
ne.com/genrtion resrcs/reports/emission/2005 mea report.pdf. Check
your states website for information related to your locality.
Remember
/'. Determining your utility's carbon
,' <*js"} footprint is also a method of
- establishing a baseline. Carbon
emissions are affected by energy
consumption (electricity, natural gas, and fuel
oil) as well as by process emissions such as
methane. If your municipality or state requires
you to participate in a determination of a carbon
footprint or if you have a goal of reducing
greenhouse gas emissions, you may need to
know some conversion factors. Your
municipality or state should be able to tell you
what sort of methodology they use to assess
emissions from electricity. Marginal emissions
factors consider what sort of resource will be
dispatched to meet increased load or cut back to
respond to decreased load. Grid average
emission factors assign an equal portion of the
overall emissions to each kWh consumed.11
11 - ENERGY STAR'S Benchmarking Tool will give estimates of reduction of CO2 usage based on national averages but won't provide an initial baseline.
Session 2, Module 2
31
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MODULE 3: Review Legal and Other Requirements and Establish a Compliance
Baseline
Module Objective: To identify legal and other requirements that affect your operations and your compliance status.
There are additional metrics for a utility to review besides what has been covered thus far. One of the most important
aspects is compliance with legal and other requirements. While this is a fundamental goal for any utility, these
requirements can also significantly affect the nature and scope of your energy management program.
What are the requirements that utilities must follow? A few examples are:
Attaining a certain quality of discharged effluent or treated water,
Maintaining a stated degree of reliability,
Having capacity to handle unusually large flows or demands,
Ensuring worker safety,
Environmental monitoring and reporting and documenting compliance, and
Limiting air pollutant emissions based on permitted amounts.
Municipalities could apply additional ("other") requirements, such as:
Limiting growth in costs of energy, chemicals, and/or labor,
Enacting load reductions during times of peak power demand (since grid reliability is a concern), and
Limiting or reducing greenhouse gas emissions (direct and indirect).
Apply Your Knowledge
Make a list of your most relevant requirements. Then, for each one, ask the following:
What is required of our facility?
What agency or entity has enacted this requirement?
Is our understanding of this requirement current and accurate?
Do the relevant agencies consider our utility to be fully in compliance?
Do we consider our utility to be fully in compliance? What could we do to better achieve
compliance?
How does this requirement affect the scope or type of energy conservation measures that we may
consider? Does it encourage or discourage specific types of measures?
Are we in compliance? If yes, what will we have to do to maintain that status? If not, what can we do to
achieve compliance?
In the example table on the next page, a wastewater utility has a combined heat and power system that is permitted for
nitrous oxides (NOx) emissions. The utility gathered the information as part of their legal and other requirements review
on NOx emissions.
Session 2, Module 3
-------
Requirement
Relevant agencies (federal, state, local)
Effective date of requirement including revision
date(s) as applicable
Are applicable regulations changing or being
updated?
Are we in compliance according to agencies?
Could we improve our performance?
How does this affect the proposed energy
conservation measures?
Are we in compliance?
Requirement Name: NOx Emissions
Our combined heat and power (CHP) system is permitted at a rate of 200 pounds of NOx per
year.
State Department of Environment Quality,
contact email phone #
Date
Yes, the state is changing regulations due to CAIR rule but we expect no change in our
permitted amount as it is a very small rate per MWh.
Yes, emissions are slightly under our permitted amount.
Possibly, because NOx is a precursor to ground-level ozone, which causes urban smog, we
would like to reduce emissions if possible. We are looking at changing the fuel/air mix to
reduce emissions. Another option is to evaluate the cost of verified retrofit technologies.
Measures to improve the plant's energy efficiency would enable us to stay under our permitted
amount even if the flow rates increase.
Yes, however, if the electricity demand continues to grow as flow rates increase, our emissions
would surpass the cap and we would need a new permit.
Apply Your Knowledge
Using the example table above and the blank regulatory requirements table in Appendix D, fill in the information for
your utility.
Note: New energy generation systems will often have a number of regulatory mandates. Air emission permitting
requirements may limit the use of on-site generation unless the system is exceptionally clean. Demands for system
reliability may place limitations on the use of on-site generation. Interconnection protocols require close cooperation with
the energy provider to ensure that the generator is properly aligned with the grid.
©
CONSIDER THIS...
Consider how the energy improvements you will prioritize may affect your compliance status. Also, consider
whether the improvements will create additional regulating requirements of their own.
Session 2 Resources & Tools
ENERGY STAR'S Benchmarking Tool:
(http://www.energystar.gov/index.cfm?c=evaluate performance.bus portfoliomanager)
ENERGY STAR's Portfolio Manager: (https://www.energystar.gov/istar/pmpam/)
For more information on auditing protocols, use this link
(http:/ / cfpub.epa.gov/ compliance/ resources/ policies/ incentives/ auditing/).
Converting your energy use to greenhouse gas:
http://www.cleanerandgreener.org/ resources/ pollutioncalculator.htm
Carbon Dioxide Emissions from the Generation of Electric Power in the United States:
http://www.eia.doe.gov/cneaf/electricity/page/co2 report/co2report.html
Greenhouse Gas Equivalency Calculator:
http://www.usctcgatewav.net/tool
Moving to the Next Session ^
In Assessing Current Energy Baseline Status, you developed baseline data, conducted an energy audit, completed some
benchmarking, and did a review of legal and other compliance requirements. This information will be used in the next
sessions to determine your utility's potential priority energy improvements.
Session 2, Module 3
33
-------
SESSION 3: Establishing an Energy Vision and Priorities for
Improvement
Now that you have secured management's commitment, selected an
energy program manager to put an Energy Team together, benchmarked
your utility, and completed an Energy Audit, it is time to decide what
energy improvement priorities to work on first.
In this session, you will:
1. Develop an energy policy.
2. Identify activities and operations that consume energy, using
information from your Energy Audit (equipment inventory
worksheets) and other data collection efforts you completed in
Session 2.
3. Prioritize activities/operations and potential energy
improvement efforts.
Let's first review a few key terms that will help you as you establish an
Energy Vision and Priorities for Improvement.
Energy Policy: An organization's formal statement defining its intentions
and principles in relation to its overall management of energy resources.
It provides a framework for action and setting specific energy
improvement goals and milestones.
Energy Fenceline: The scope of your operations where you will focus your
energy improvement goals and where they will be implemented. For
example, your fenceline may include all of your operations, be within a
particular operation (e.g., biosolids), include particular utility components
(e.g., pumps), or a particular building.
Continual Improvement: The process of ongoing efforts to improve. It is
the basic principle of the Plan-Do-Check-Act approach.
Plan
Keys to Success
0 Align your energy policy with
your utility goals
0 Involve employees in the
energy review process
0 Remember the Keep It Super
Simple (KISS) Rule
0 Communicate status
regularly and frequently
0 Document recurring
processes and how decisions
are made
Session 3
34
-------
J_^ Remember
.} } i , Avoid developing an Energy Policy
***/,' that is vague or so generic that it
could apply to any organization.
Your Energy Policy should be specific to the
goals your utility wants to accomplish.
MODULE 1: Develop an Energy Policy
Module Objective: To learn how to develop a strong Energy Policy.
An Energy Policy is your utility's statement of commitment to improve
its use and management of energy resources. It should include a
commitment to continual improvement and compliance. Signed by top
management, the Energy Policy provides a vision for the entire utility
and serves as a foundation document for energy improvement
management programs. Everyone, including contractors and vendors,
should understand the policy and what is expected of them in order to
achieve your energy goals. Use your Energy Policy as a framework for
planning, action, and continual improvement.
The Energy Policy should also include a commitment to explore and increase the use of renewable fuels or renewable
energy technology. Renewable resources not only can improve the environmental impacts of a utility's activities, their
appropriate use can also save money.
As you develop your Energy Policy, ensure that it is consistent with other strategic business priorities you may have
established through strategic plans or other similar efforts. Don't make the mistake of having your Energy Policy "exist
in a vacuum." For example, you may have already embarked on a major effort to improve the management of your capital
assets through a formal asset management program, or your municipality's or facility's master planning document may
already have goals on water conservation or energy use that you can incorporate. These types of programs make use of
many of the same tools and data gathering efforts, so it makes sense to reflect these commitments in your Energy Policy
to become part of your improvement and management programs.
Have a focus meeting with your Energy Team to brainstorm what should be included in your Policy. Designate a couple
of Energy Team members to draft the text of the Energy Policy. Get input from top management and seek input from
employees. Also, review your current business or level of service commitments and/or organizational and energy goals.
It is important that your policy reflect your organizational culture and that it is appropriate to all levels of your operations
and services.
Methods used to communicate your Energy Policy:
Posting the Energy Policy at various sites throughout your utility (e.g., in lunchrooms) so there is a visual
reminder of the statement and its importance;
Using paycheck stuffers, identification badges, and/or wallet cards, so that employees can carry the Energy
Policy with them;
Incorporating the Energy Policy into existing training opportunities and materials;
Referring to the Energy Policy at staff or all-hands meetings; and
Posting the Energy Policy on the facility's Internet/Intranet site.
After you've received input, finalize your Policy by having top management sign, date, post, and communicate it to
employees. Make sure that all employees understand the Energy Policy and how it relates to their work. The policy
should also be communicated to vendors and contractors as they may also have a role in meeting your energy improvement
goals.
Apply Your Knowledge
Develop an Energy Policy for your utility, building on current program policies (e.g., asset management, environmental)
already in place.
c
CONSIDER THIS...
Keep your Energy Policy simple. A simple policy written with specific expectations provides employees with
a straight-forward and realistic view of your commitments to energy improvements.
Session 3, Module 1
35
-------
MODULE 2: Identify Activities and Operations that Consume Energy
Module Objective: To learn how to identify the activities and operations at your utility that consume energy.
This module will help you define your utility's energy "footprint" (i.e., how your operations and activities affect energy use)
and develop measurable goals for energy improvements. This process can be challenging and requires focus and
teamwork. However, this is the opportunity for your utility to:
1. Take a hard look at your individual operations and activities.
2. Identify how these positively and negatively affect energy use.
3. Better understand the unique role that each of you, individually and collectively, play in managing your
utility's energy consumption. The result of this effort will be a list of activities and operations you can use to
decide where to invest time, effort, and resources.
Following the step-by-step approach will make it manageable and you will quickly realize the benefits of this approach.
STEP 1: Pull Together Information Previously Collected
Review information from your previously planned and implemented energy improvement project, baseline information,
energy audits, and any other additional sources that might be useful in developing this concise list of activities and
operations.
STEP 2: Develop a List of Activities and Operations
Employees within your energy fenceline will most likely be the best source of information as you develop a list of activities
and operations, where they are located, the type of energy used, and the current use and costs. The table below will serve
as a helpful example as your utility's Energy Team begins populating a table with activities and operations specific to
your facility.
Example List of Activities and Operations
Activity Operation or Location Type of Energy Used Current Use and Costs
Heating, Ventilation, and Air
Conditioning (HVAC)
Lighting
Vehicle Use
Operations Building (Heating)
Operations Building (Cooling,
Ventilation)
Operations Building
Service Trucks
Natural Gas
Electricity
Electricity
Diesel Fuel
150 MMBTU/year
$1,500/year
1 0,000 kWh/year
$1,000/year
24,000 kWh/year
(4 kWh/ft2, 6,000 ft2)
$2,400/year
1,000 gallons/year
$2,500/year
Equipment
Pump#1
Pump #2
Pump #3
Pump #4
Treatment Building
Treatment Building
Treatment Building
Treatment Building
Electricity
Electricity
Electricity
Electricity
400,000 kWh/year
$40,000/year
480,000 kWh/year
$48,000/year
280,000 kWh/year
$28,000/year
1 60,000 kWh/year
$16,000/year
Session 3, Module 2
36
-------
Apply Your Knowledge
Using the table on the previous page as an example and the blank table in Appendix E, work with your Energy Team and
complete a list of activities and operations, their locations, the type of energy they use, and the current use and costs for
energy at your utility.
Typical Water and Wastewater High-Use Energy Operations and Associated Potential Energy Saving
Measures12
High Energy Using Operations
Pumping
Aeration
Dewatering
Lighting
Heating, Ventilation, Air Conditioning (HVAC)
Energy Saving Measures
Reduce load
Manage load
Water to wire efficiency
Pump selection
Motor and drive selection
Automated control
Fine bubble
Improved surface aerators
Premium motors
High efficiency motor drive
Blower Variable Frequency Drives (VFDs)
Automatic DO control
Replace vacuum systems
Premium motors
VFDs for plant water pump
Motion sensors
T5 low and high bay fixtures
Pulse start metal halide
Indirect fluorescent
Super efficient T8s
Comprehensive control for large buildings
Water source heat pumps
Prescriptive incentives for RTUs
Custom incentives for larger units
Low volume fume hood
Occupancy controls
Heat pump for generator oil sump
Appendix F outlines additional energy saving information for typical water and wastewater equipment and systems
including motors, pumps, aeration systems, lighting, and HVAC.
©
CONSIDER THIS...
Keep the level of detail meaningful without getting stuck in too many details. It is more important to compile
a reasonable list with relevant information in order to make decisions about what energy consuming activities
and operations your utility should focus on first.
12- An Overview of Utility Efficiency Programs, Massachusetts Electric, NEWEA Conference, 2004.
Session 3, Module 2
37
-------
MODULE 3: Prioritize Activities/Operations and Potential Energy
Improvement Efforts
Module Objective: To develop a method to prioritize energy improvements.
You've created a large list of activities and operations where energy efficiency could be improved. Don't worry, you do
not have to make all the improvements at once. The next step of the process is to prioritize the list to identify a manageable
number of improvements that are the most important to your utility.
You can narrow your list of activities and operations to focus on what is most significant by:
1. Defining a group of criteria that help focus on your energy goals and developing a scoring system;
2. Applying the criteria to each of the energy related-activities or operations to achieve a total
rank or number; and
3. Establishing a threshold score above which an activity or operation will become a priority for
energy improvement.
STEP 1: Define Criteria to Prioritize Opportunities for Energy Improvements
Experience has shown that a simple system for developing priorities
generates the same results as a more complex one, but in a much
shorter period of time and with more satisfied team members. There
is not a magic number in terms of how many criteria you should use;
it really depends on what factors are important within your utility
and what allows you to simply and effectively rank opportunities for
energy improvements. Refer back to your Energy Policy for ideas , u , f . . .
, 5 , . . . y &y y work best for your water or wastewater
when selecting your criteria.
6 y utility.
Remember
Criteria can be variable. Develop
the unique and individual
combination of criteria that will
For energy issues, criteria might include:
Current or projected costs;
Feasibility of efficiency projects or the use of renewable sources;
Potential for energy use reduction;
Availability of funding;
Existing need for equipment upgrade;
Renewable source of energy, particularly for facilities in states that are pushing for climate change mitigation
( e.g., Massachusetts and Connecticut);
Return on investment;
Regulatory requirement; and
Support of other priorities (e.g., asset management goals).
Apply your Knowledge
Work with your Energy Team to select approximately four or five criteria for your utility.
Criterion 1:
Criterion 2:
Criterion 3:
Criterion 4:
Criterion 5:
Session 3, Module 3 38
-------
STEP 2: Decide How to Use the Criteria
Once you have selected your criteria for ranking your energy activities
and operations, apply the criteria to each of the entries on your list using
a quantitative ranking method. A simple 1 for low impact; 3 for medium
impact; and 5 for high impact works well and avoids long discussions
about the difference between a 2 and 3 or a 3 and 4. Remember that
your evaluation of the energy impact is based on your expertise and
experience. It is basically an educated guess.
Take the time to document the process you used to determine your
potential energy improvement priorities. This can be as simple as a
memo that outlines the process that was used or as formal as a
management system procedure. Documenting how you developed
your priorities will help you support requests for resources and will also
help in the future when the process is repeated.
Remember, this is a subjective analysis. Make sure that when you finish
your scoring, you do a reality check with staff that work within your
energy fenceline to verify that your selected operations and activities
are feasible priorities.
See the examples on the next two pages.
Remember
Documenting procedures and
processes captures your utility's
- -" institutional knowledge and allows
for continual improvement at your utility.
* If rate of return is one of the
factors in deciding what to work
on first, consider using ENERGY STAR'S
financial evaluation tools (financial value
calculator, building upgrade value calculator,
cash flow opportunity calculator, etc.) at
http://wwwenergystar.gov/index.cfm?c=assess
value.financial tools.
Session 3, Module 3
39
-------
Example of Energy Priority Ranking Table
Activity Operation or Location Type of Current Ranking Criteria to Set Priorities (Examples only)
Energy Costs
Heating,
Ventilation,
and Air
Conditioning
Lighting
Vehicle Use
Equipment
Operations Building (Heating)
Operations Building (Cooling,
Ventilation)
Operations Building
Service Trucks
Service Trucks
Pump#1
Pump #2
Natural Gas
Electricity
Electricity
Diesel Fuel
Diesel Fuel
Electricity
Electricity
$1,500/year
$1,000/year
$3,000/yr
$2,500/yr
$2,500/yr
$40,000/yr
$48,000/yr
Current/
Projected
Costs
1=L
3=M
5=H
1
1
1
1
1
5
5
Feasibility of
Energy
Efficiency
Projects
1=not
feasible
3= feasible
5= Very
feasible
3
3
5
5
1
3
3
Feasibility of
Alternative,
Renewable
sources?
1=L
3=M
5=H
1
1
1
1
5
1
1
Costs to
implement
1=H
3=M
5=L
3
3
1
3
3
3
3
Availability
of Funding
1=Capital
funds
required
3=potential
or not
known
5=Funding
options
available
1
1
5
1
3
1
1
Rate of
Return on
Investment
1 = More
than
years
3=
years
5= Less
than
years
1
1
5
1
1
3
1
Regulated?
0=No
3=Yes
5=Yes and
compliance
issues exist
0
0
0
3
3
3
3
Total
Score
10
10
18
15
17
19
17
-------
Example: Now, sort from highest to lowest score to determine the potential priority energy improvements.
Activity Operation or Location Type of Current Ranking Criteria to Set Priorities (Examples only)
Energy Costs
Equipment
Lighting
Vehicle Use
Equipment
Vehicle Use
Heating,
Ventilation
and Air
Conditioning
Pump#1
Operations Building
Service Trucks
Pump #2
Service Trucks
Operations Building (Heating)
Operations Building (Heating)
Electricity
Electricity
Diesel Fuel
Electricity
Diesel Fuel
Natural Gas
Electricity
$40,000/yr
$3,000/yr
$2,500/yr
$48,000/yr
$2,500/yr
$1,500/year
$1,000/year
Current/
Projected
Costs
1=L
5
1
1
5
1
1
1
Feasibility of
Energy
Efficiency
Projects
1=not
feasible
3= feasible
5= Very
feasible
3
5
1
3
5
3
3
Feasibility of
Alternative,
Renewable
sources?
1=L
1
1
5
1
1
1
1
Costs to
implement
1=H
3
1
3
3
3
3
3
Availability
of Funding
1=Capital
funds
required
3=potential
or not
known
5=Funding
options
available
1
5
3
1
1
1
1
Rate of
Return on
Investment
1 = More
than
years
3=
years
5= Less
than
years
3
5
1
1
1
1
1
Regulated?
0=No
3=Yes
5=Yes and
compliance
issues exist
3
0
3
3
3
0
0
Total
Score
19
18
17
17
15
10
10
-------
'K, Remember
Each energy activity or operation
that is identified as a priority
~ (i.e., a total score equal to or over
your determined threshold) will require
some kind of operational or equipment
control measure, training, recordkeeping
and other relevant required management
practice.
STEP 3: Establish a Threshold Score
In the example on the previous pages, the total score was 19 for pump
#1. What does this score mean? Once you've determined all your
potential priority energy improvements and their associated scores for
the operations/activities, you will need to establish a priority threshold
based on what your organization can reasonably manage. For instance,
anything with a total score of 18 and above could be considered an
energy management priority in the example above.
Keep in mind that your utility has the flexibility, consistent with its
business, technical, legal, operational, and stakeholder concerns and
requirements to set what it considers to be a priority threshold value for , , . .
energy management. Remember, this is a continuous process, so
you don't need to be perfect the first time
Utility Case Study: Renewable Opportunities in around.
Anaerobic Digestion
If biogas is available from anaerobic digestion, the gas produced is primarily composed of methane, which can be used to
run an engine generator or microturbine. In a combined heat and power (or cogeneration) system, waste heat can be
captured and used to provide for space heating, sludge drying, or other needs. The fuel source is basically wastewater -
a renewable resource - and a facility that employs this technology may be eligible to sell "green power credits" to a broker.13
Water and wastewater utilities have excellent opportunities for energy generation from renewable sources. There are
numerous case studies of wastewater utilities installing energy generation systems based on methane capture. A number
of these are included in Appendix G. For further information, see the December 2006 EPA report, Opportunities for and
Benefits of Combined Heat and Power at Wastewater Treatment Facilities,,14
Cogeneration from wastewater-derived methane has several advantages including:
Utilizing a renewable resource;
Minimizing greenhouse gas emissions;15
Creating efficiency by utilizing heat that would otherwise be wasted;
Locating the electricity production at the point of demand (distributed generator); and
Reducing peak demand, easing the load on the electric utility's transmission and distribution system.
Such a system might benefit from incentives designed to support renewable energy, cogeneration, distributed generation,
or energy efficiency. Two good directories of incentive programs are DSIRE, the Database of State Incentives for Renewable
Energy,16 and the EPA's Combined Heat and Power Partnership Funding Resources page.17
Utility Case Study: Renewable Opportunities in Wind Turbines
Small wind turbines have been installed at wastewater facilities in Saco, ME; Bellevue, OH; Dimondale, MI; and Browning,
MT. Photovoltaic (PV) systems of all sizes have been installed at wastewater treatment plants, producing electricity from
sunlight. The 14.5-kW system in Charlemont, MA is of modest size, about three to four times the size of a large household
PV system. Wastewater facilities have also seen many of the nation's largest PV arrays, including the 500-kW system in
Somerset, NJ, the 520-kW system in Oroville, CA, and the 770-kW system in Yuba City, AZ.
In addition, the Atlantic County, New Jersey Utility Authority (ACUA) has a wind farm project and has implemented a
number of other alternative energy projects, including geothermal and solar. To review ACUA's alternative energy projects,
use this link (http://www.acua. com/alternative/a projects.cfm).
13- See http://www.eere.energy.gov/greenpower/markets/certificates.shtml?page=0 for a list of vendors of "Renewable Energy Credits"; some such vendors may be willing
to buy the credits resulting from a renewable energy project at a wastewater facility.
14 - Available online at http://www.epa.gov/chp/documents/wwtf opportunities.pdf.
IS - The CO2 emissions from the CHP system contribute much less to global warming than the biogas would produce if vented.
16- http: / /www.dsireusa.org
17- http://www.epa.gov/chp/funding/index.html
Session 3, Module 3 42
-------
Apply Your Knowledge
Use the tables on pages 40 and 41 as examples and the blank one in Appendix H. Determine your most important (priority)
energy improvement opportunities for the fenceline energy activities and operations of your utility.
©
CONSIDER THIS...
Keep It Super Simple [KISS]
Don't have too many criteria or over analyze. A very complicated scoring system will discourage
those involved and make this process more difficult than necessary. Your rankings are more of an
educated assessment rather than a mathematical computation.
Session 3 Resources & Tools
EMS Handbook for Wastewater Utilities: http://www.peercenter.net/toolkit/5tep By Step.cfm
EMS Aspects Identification and Prioritization Workbook: http://www.peercenter.net/toolkit/Aspects.cfm
To try an EPA biodiesel calculator to determine the emissions benefits of switching to alternative fuels, use this link
http://www.epa.gov/otaq/ retrofit/ techlist-biodiesel.htm
Solar Photovoltaic Installation FAQs: http://www.mass.gov/doer/pub info/solar-tip.pdf
Solar Photovoltaic Site Selection Survey: http:/ / mass, go v/ doer/ pro grams/ renew/ renew.htm
Massachusetts Division of Energy Resources (DOER) Renewable Energy Programs:
http://www.mass.gov/envir/5ustainable/documents/pv site selection survey.doc
Massachusetts Technology Collaborative, Small Renewables Initiative:
http://www.masstech.org/renewableenergy/small renewables.htm
Massachusetts Technology Collaborative, Large Onsite Renewables Initiative:
http://masstech.org/renewableenergy/large renewables.htm
Moving to the Next Session
In Establishing an Energy Vision and Priorities for Improvement, you crafted an Energy Policy, developed a list of energy-
consuming activities and operations, and identified energy improvement priorities. In the next Session, you will establish
energy improvement goals, objectives, and targets for the priority energy improvement opportunities that scored above
the threshold you established.
Session 3, Module 3 43
-------
SESSION 4: Identify Energy Objectives and Targets
You have now assembled your team, evaluated your energy
performance, and identified priority areas for improvement. The next
steps are to set objectives and establish targets to measure your
progress. These targets can relate to activities - such as your progress
in implementing energy conservation measures - or to the results you
achieve from these measures.
In this session, you will:
1. Establish energy objectives and targets.
2. Define performance indicators.
Let's first review a few key terms that will help as you develop your
energy objectives and targets.
Objective: The internal goal your utility establishes to improve its
energy performance. Example: reduce facility energy use.
Target: A measurable performance requirement that arises from your
objective. Example: reduce utility energy use by 25% from 2006 levels
by 2011.
Performance Indicator: What exactly you will measure to evaluate and
verify performance improvements in relation to a specific target. For
example, measuring electricity cost or consumption per gallon of
wastewater treated ($ or kWh/gallon). Performance indicators can be
adjusted to meet specific management needs or as necessary to ensure
progress toward reaching specific energy targets.
Plan
Keys to Success
0 Align utility objectives and
targets with your energy
policy
0 Communicate objectives and
targets to staff
0 Identify energy improvement
targets that can be measured
0 Measure early and often
Session 4
44
-------
MODULE 1: Establish Energy Objectives and Targets
Module Objective: To learn how to set objectives and targets for your priority energy activities and operations.
Remember
Baseline data is the starting point from
which to track the achievement of an
"' energy objective. "Normalized"
baselines accurately measure how
your utility's energy consumption could change
over time due to seasonal and other variations.
Normalized baselines will take into account how
your energy consumption may be affected by
changes in flow, load, or other related factors.
Your utility may have many energy improvement goals. However, you
may find that you can't do everything all at once and that some types of
energy improvement goals may work towards one objective at the
expense of another. For example, purchasing green power may increase
cost, but decrease greenhouse gas (GHG) emissions. While all of the
objectives may seem appealing, it's best to start with a limited number so
that you can focus your efforts, get experience, and track, document, and
verify results.
Although there are a number of example objectives and targets from
water and wastewater facilities that have implemented energy
improvement programs, there are no standard energy objectives and
targets that make sense for all utilities in all locations. Your objectives and
targets should reflect what your utility does, how well it is currently
performing, and what it wants to achieve.
A water or wastewater utility might have the following example energy objectives:
Reduce energy cost;
Reduce petroleum consumption;
Reduce peak energy demand;
Reduce GHG emissions;
Improve reliability;
Increase use of renewable fuels;
Evaluate the installation or improve performance of renewable energy technologies; and
Reduce vehicle fuel use.
What do you hope to accomplish in the next few years? Set energy targets that are realistic enough to get accomplished yet
significant enough to get noticed and motivate change. Remember that your ability to measure and document progress
towards your targets is important.
In the example from Session 3, the utility's priority fenceline
activities/operations had a total sigficance score of 18 for equipment
(pump #1) and a score of 19 for lighting (operations building). As
detailed in Module 3 of Session 3, these measures scored higher than the
HVAC systems, vehicle use, and other pumps and equipment. Pump #1
and lighting were therefore identified as potential focus areas where
goals could be set based on factors such as capital cost, payback period,
GHG emissions, and other factors that are important to your utility and
your Energy Policy.
What objectives and targets do pump #1 and lighting support? While
they will likely reduce peak electricity demand and reduce GHG
emissions, the selection of these energy improvement opportunities was
based on the goal of reducing overall energy cost - an important driver for utilities. The utility determines that, by
establishing a normalized baseline first, these energy improvement opportunities can be implemented, along with certain
operational changes, within 12 months and achieve a 10% overall reduction in energy costs.
"Sometimes behavior-based targets (e.g.,
learning a systems-based management
approach) are not the biggest gains in
performance measures related to your targets,
but they are very important in terms of
culture change and should be considered."
Donna Adams
Wastewater Division
Eugene, Oregon
Session 4, Module 1
45
-------
Below is an example of an energy improvement objective and target that a utility could select - based on Session 3's
examples of pump #1 and lighting as potential priority areas for energy improvement. In addition, a utility could consider
increasing renewable energy sources as an opportunity. Therefore, a renewable energy objective and target has been
included as a potential longer-term opportunity in the example.
Objective and Target
Timeframe
Reduce overall energy cost by 10% by 2009
12 months
Increase energy purchased or generated from renewable energy sources by 10% by 2012
4 years
Apply your Knowledge
Now choose energy improvement objectives and targets for your utility with staff and your Energy Team using the
Objective and Target worksheet provided in Appendix I.
Utility Case Study: Kent County, Delaware Wastewater - Renewable Energy
The Kent County Department of Public Works (KCDPW) operates a 16 MGD wastewater treatment plant that treats most
of the wastewater in the county with over sixty pump stations and nearly 70 miles of gravity sewer and force main, and
management of county-owned buildings. The wastewater that enters the Kent County regional system comes from five
municipal contract users and seven significant industrial users. Operations serve 70% of the county's population.
KCDPW has a certified ISO 14001 and OHSAS18001 Environmental, Health, and Safety Management System (EHS-MS),
as well as a National Biosolids Partnership certification.As part of their EHS-MS, Kent County committed to:
Reducing energy usage by 20% from 2002 levels; and
Reviewing renewable energy alternatives (e.g., wind).
Kent County started with some easy fixes (e.g., swapping lights to more energy efficient alternatives and replacing older
pumps and other assets with more energy efficient models). Additionally, their action plan included researching energy
alternatives and new technologies that could help them accomplish their targets.
Researching and Implementing New Energy Technologies
At a regional conference, Kent County saw a technology that guaranteed a 15% reduction in energy costs by reducing the
number of air blowers needed in the treatment process. Kent County, at
the time, used about 4 MW of power to consistently run 4-5 air blowers
in their process, and their energy costs were about $10,000-20,000 per
month. The process adds fine bubble diffused air to one of two parallel
basins to provide oxygen for the microorganisms. The prior process
relied on a dissolved oxygen meter at the end of the basin to allow the
operators to control the number of air blowers feeding the basin. This
system was highly inefficient and was reactive to conditions in the basins.
The new system automatically measures the amount of oxygen being
released from the basin using floating hoods and feeds this information
to an automatic control system. With the new technology Kent County
now runs 2-2 Vz air blowers rather than 4-5 before the technology, an
almost 50% reduction in their energy requirements .Within a year, Kent County has recouped the cost of the technology
(about $100,000).
Remember
Focus your energy goals on areas
that will have the most impact on
' your energy footprint and your water
or wastewater operations. You may
want to review your priority energy
improvement impacts and the Energy Policy
that your utility drafted before you finalize your
goals.
Session 4, Module 1
46
-------
Creating an Energy Park of Renewable Energy Sources
Kent County began to investigate four renewable energy alternatives: wind, biomass, solar, and hydroelectric power. The
utility's senior executive saw some wind powered utilities in Germany and believed that they would work at the Kent
County facility. They hired a consultant to conduct wind studies in 2003 and determined that the turbines would be
operational with winds at 9 miles per hour. The study cited a lack of on-site wind data and suggested that additional data
was required and that with certain energy credits, the facility would be feasible. The utility installed a wind monitoring
system on a 115 foot tall radio tower located at the facility in 2004. The studies showed that at 115 feet the winds were at
8 Vz to 9 miles per hour - marginally sufficient. Further studies were ordered at 200 feet and projections indicate that the
wind energy has the potential to provide about 60% of the facility's energy needs. Wind towers will be installed in the
energy park at the facility sometime before the end of 2010 if the additional wind survey proves that there is sufficient wind
available at the 200 foot level to support turbines. The cost of the wind installation is $10-12 million which does not include
any maintenance costs. The utility does not anticipate any additional capital costs. However, since delivery of the
equipment is several years out there may be an inflation factor that has not been considered. The actual cost to the county
will depend upon what available grants they can obtain.
Currently, biomass stabilization processes at the facility use lime
addition with heat drying to produce a quality Class A biosolids
containing 60% solids. The facility is investigating the use of anaerobic
digestion of fats, greases, and the utility's sludge to create methane gas
which would then be used in the fuel cells to create sufficient energy
production to account for about one third of the utility's energy needs.
The estimated cost of the system would be $3-5 million.
"The energy projects are an outgrowth of the
facility's EHS-MS. The main goal of our
EHS-MS is to reduce the environmental
footprint of the facility. Energy usage and
generation are key components of this effort."
Jim Newton
Environmental Program Manager
Kent County Public Works Department
Dover, Delaware
The facility is working with a contractor to design and build the
combined system. Under the proposed agreement, the contractor
would design, build, and operate the renewable energy park and charge
the county for the electricity generated. In order to reduce the unit cost
of electricity, the county will pay $3-5 million to the contractor over the
next 3 years. In addition, the county will charge the FOG haulers a
treatment fee to help offset the costs. The remaining 80% will be paid to
the contract, with the utility repaying over a 20-year period. After that the utility will own the wind turbines. It is estimated
that the life expectancy of the turbine is greater than 30 years. The cost of electricity to be paid by the county will include
the recovery of the capital expenses, the facility operations and maintenance, and the profit for the energy company. The
actual costs will be determined as each new unit comes on line.
Session 4, Module 1
47
-------
Apply your Knowledge
Once your utility has determined the energy objectives and targets, use EPA's Portfolio Manager to calculate reductions
in energy cost, consumption, and emissions and to track progress towards your goals. Results from EPA's energy
performance rating system can help facility managers make decisions about commissioning equipment, changing
operations and maintenance procedures, and investing in future energy efficiency projects. Organizations have learned that
EPA's rating provides valuable information to managers at all levels, empowering them to make sound decisions about
energy management.
The following summary table is from ENERGY STAR's Portfolio Manager and contains examples for three sample
wastewater treatment plants showing:
1. Current source energy per flow;
2. Annual energy cost;
3. Baseline and current performance rating;
4. Adjusted energy reduction; and
5. Pounds of carbon emissions reduced over time.
f>~'
$.133 831 08 '87 96 2175C1206 279% 507.94371
Factors to consider in setting objectives and targets:
Ability to control;
Ability to track/measure;
Cost to track/measure;
Progress reporting; and
Linkages to your Energy Policy.
©
CONSIDER THIS...
Start with one or two manageable energy objectives and targets that you will be able to monitor. The
best targets are those that can be measured and that are meaningful to employees. Communicate
your objectives and targets to staff. Make sure everybody knows what you seek to accomplish and
by when.
Session 4, Module 1 48
-------
MODULE 2: Define Performance Indicators
Module Objective: To learn how to measure progress towards your energy targets.
As noted previously, energy improvements lend themselves to quantitative measurement. Your electricity bill, natural gas
bill, or similar invoices and data sources provide a ready reference for energy consumption, peak demand, and energy cost.
Energy performance indicators will include the measured quantity, a unit, and, if applicable, a time interval. For example,
a utility might use one or more of the following performance indicators for energy at their facility:
Electricity consumption, in kWh per month;
Peak electricity demand, in kW;
Natural gas, in therms per month;
Energy cost, in dollars per month;
Electricity consumption per gallon of water or wastewater treated (kWh per gallon); and
Energy cost or consumption per gallon of water or wastewater treated ($ or kBTU/MGD).
Performance Indicators: Measuring Your Progress
When you establish quantifiable objectives and targets you may first need to establish a (normalized) baseline. This baseline
serves as the starting point from which you will measure your progress. For example, you may measure your equipment's
electricity use (for motors, pumps, fans, and the like) in kilowatt-hours per million gallons treated (kWh/MG) for each
month. Or, you may use "weather normalization" to adjust your HVAC energy demand each year. If your facility has
increased in size, you may have increased energy demand for lighting, HVAC, and other loads. You can also "normalize"
your demand to the size of your facility, defining your energy use per square foot for these loads.
ENERGY STAR's Benchmarking Tool, (http://www.energystar.gov/index.cfm?c=evaluate performance.bus portfoliomanager),
is designed to handle this situation. For example, if your building footprint changes, how would you enter the change
without losing data? ENERGY STAR's Benchmarking Tool and its training components can help you answer this
question and others.
ENERGY STAR offers plant energy performance indicators (EPIs) to
enable energy managers to evaluate the energy efficiency of their plants
relative to that of the industry.
Do you have all the data and information to set an energy target and
establish an applicable, measurable performance indicator? If not,
what level of effort is necessary to define the baseline data you require?
You may find that no baseline data exist. If so, do not let this stop you
from moving forward. Set a plan to determine your baseline as a first
step.
Remember
Don't hesitate to be ambitious in selecting your
energy objectives and targets.
Many organizations have found that
improvements in energy efficiency
offer great potential for cost savings
- _ .-' and continued improvement even
after the "low-hanging fruit" has been collected.
Also, remember to try and use data you already
collect and can count when establishing your
energy performance indicators.
Apply Your Knowledge
Following the examples below and the blank performance indicator
worksheet in Appendix I and complete the information that you will need to determine an applicable performance
indicator to measure progress toward the energy targets that you set in Session 4, Module 1. Include where you can find
the information (i.e., data source).
Tarqet
Reduce overall energy cost by 10% by 2009
Performance Indicator
Pump #1: Electricity consumption per gallon of
water or wastewater treated (kWh per gallon)
Lighting: kWh per square foot/year
Data Source
Automatic Energy Management System
Increase energy purchased or generated from
renewable energy sources by 10% by 2012
Solar or wind energy purchased or generated per
gallon of water or wastewater treated
(kWh/gallon)
Energy Consumption Invoices/energy meter
Session 4, Module 2
49
-------
Automatic Energy Management Systems
The worksheet on the previous page notes "automatic energy management system" as a potential data source for
electricity consumption. "Energy management system" in this usage does not mean a set of practices, but rather
a system of hardware and software that is used to track and manage energy consumption. It may include a set of
sub-meters, a connection to the main utility meter, controls for certain systems, and a program to display energy
consumption and adjust certain parameters. These systems vary considerably in their complexity and capability
but many facilities use some systems of this type. Supervisory Control and Data Acquisition (SCADA) systems
in particular are widely used to help utilities reduce energy costs and save money.
SCADA systems can be used to optimize system performance, adjust for time-of-day electrical rates, and warn of
mechanical problems. They can be programmed to respond to changing conditions, make it easier to monitor and
control a water or wastewater system, and provide comprehensive information to the utility managers.
SCADA systems can be very cost-effective as seen by the following examples from water utilities.18
Fresno, CA estimates the annual savings from its SCADA system at $725,000. The system was installed for a
cost of $3.2 million, giving it a simple payback period of 4.4 years.
The California Water Service Company installed a SCADA system in its Westlake District at a cost of $100,000,
for annual savings of $47,000, a simple payback period of 2.1 years.
Even if a utility already has a SCADA system, additional functionality could improve its performance, or a newer
system might offer the potential for additional cost savings.
Below are additional examples of energy performance indicators for your utility Energy Team to consider.
Target
Reduce peak electricity demand by 10% from
2006 levels
Performance Indicator
Peak electricity demand (kW)
Data Source
Automatic Energy Management System,
SCADA
Increase share of biodiesel to 20% of fuel
purchases
Biodiesel purchased (gallons per month) and
diesel fuel purchased (gallons per month)
Energy Consumption Invoices
Increase on-site generation from microturbine
by 20% from 2006 levels
Electricity generation (kWh/month)
Meter on microturbine
Reduce electricity demand per gallon treated
by 10% from 2006 levels
Electricity consumption per gallon of
wastewater treated (kWh/gallon)
Automatic energy management system (kWh),
pump records (gallons treated)
©
CONSIDER THIS...
Make sure that your performance indicators are meaningful given the context in which you operate. If
changes in your energy cost are driven largely by external market forces and not by changes in your energy
consumption, then energy cost might not be a metric that properly conveys your progress on energy
management.
Session 4 Resources & Tools
ENERGY STAR's Portfolio Manager: (https://www.energystar. gov/istar/pmpam/)
ENERGY STAR Plant Energy Performance Indicators (EPIs):
(http://www.energystar.gov/index.cfm?c=in focus.bus industries focus)
Moving to the Next Session ^
In Identifying Energy Objectives and Targets, you selected objectives and targets you want to achieve for your priority energy-
consuming activities and operations. In the next session, you will establish action plans or energy improvement
management programs to meet your objectives and targets. These will include the specific tasks needed to reach your
energy goals, staff responsible for accomplishing the tasks, the resources required, and a timeline for implementation. In
addition, you will determine what you have in place and what is needed to control or manage your priority operations.
18 - National Renewable Energy Laboratory, Cities Cut Water System Energy Costs, document DOE/CH10093-262, February 1994.
Session 4, Module 2
50
-------
SESSION 5: Implementing Energy Improvement Programs and
Building a Management System to Support Them
Now that your utility has established energy objectives and targets to
identify what they would like to accomplish for energy improvement, it
is time to take action to implement energy improvement priorities and
build an infrastructure of training, communication, and management
system controls.
In this session you will:
1. Develop action plans to implement energy improvements.
2. Develop management system operating control (e.g.
training, communication, records, system procedures) to
support energy improvements.
Let's first review a few key terms that will help as you implement your
energy improvement programs.
Energy Improvement Management Program: A structured program with
a set of specific identifiable actions providing the direction for energy
objectives and targets to be tracked and accomplished. Your program
plan should assign responsibilities, tasks, timeframes, and resources
(who, what, by when and how much) for achieving your objectives and
targets.
Operating Controls: Documents that specify the way to execute a certain
activity or operation. Operating controls are assigned to activities and
operations involving priority energy improvement opportunities and are
documented through the use of work instructions, standard operating
procedures (SOPs), manuals, and programs. Examples of where these
controls are used would include HVAC, equipment maintenance,
calibration, and automatic lighting.
Keys to Success
0 Build on what has worked in
the past but promote creative
thinking about new and
innovative approaches
0 Develop meaningful measures
to assess and communicate
progress
0 Communicate what you are
doing, what you need, and
the results
0 Use energy improvements to
motivate and inspire
0 Support energy
improvements with training
and procedures to help
support and reach your
energy goals
Session 5
51
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MODULE 1: Develop Action Plans To Implement Energy Improvements
Module Objective: To learn how to develop Energy Improvement Management Programs.
Action plans or Energy Improvement Management Programs are
"roadmaps" that define how your utility intends to reach its energy
improvement objectives and targets. They describe how your
organization will translate its goals into concrete action plans so that
energy objectives and targets are achieved.
In this module, you will:
Step 1. Establish Energy Improvement Management Programs.
Remember
Refer back to the Typical High Use
Energy Operations and Their
J Associated Potential Energy Saving
Measures Table (pages 40-41) to
help you develop potential objectives and targets
and subsequent Energy Improvement
Management Program.
Step 2. Get top management commitment and approval.
Step 3. Communicate your objectives and targets and Energy Improvement Management Programs.
Step 1: Establish Energy Improvement Management Programs
Now that you have set energy objectives and targets (in Session 4), how will you achieve them and accomplish your goals?
Your plan should be to:
1. List the individual tasks (What: Step-by-step guide of what individual activities will be undertaken to meet
your energy improvement objectives and targets).
2. Assign responsibility for achieving energy improvement goals (Who: Assign all levels of staff
responsibility for both the overall plan and for the individual tasks). Make sure you communicate and confirm
this with the managers and staff in responsible areas.
3. Establish deadlines for individual target tasks (When: Set intermediate deadlines for your plans). Incorporating
deadlines give those responsible a sense that this is important and needs to be accomplished in a timely manner.
4. Estimate staff time and costs * (How much: Confirm with managers that the resources [financial and
staff time] are consistent with what was described in the approved budget.) Are there other direct costs for
materials? Equipment? Outside services?
* Note: Estimating your staff time and resources is an optional step. Management may want to understand the resource commitment
before approving your objectives and targets. Many organizations therefore incorporate this information in their written plans.
Let's use our lighting and pumps energy improvement objectives and target examples (below from Session 4) to outline
the step-by-step approach to develop an Energy Improvement Management Program.
Objective
Reduce Energy Cost
Target
Reduce overall energy cost by 10% by 2009
Timeframe
12 months
Increase energy purchased or generated from
renewable energy sources
Increase energy purchased or generated from
renewable energy sources by 10% by 2012
4 years
The table on the next page presents an Energy Improvement Management Program developed as an example to increase
the efficiency of a utility's lighting and pumps. The table on page 54 shows an example of an Energy Improvement
Management Program with increasing renewable energy sources as the objective.
Session 5, Module 1
52
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Energy Improvement Priority Activities/Operations: Lighting and pumps
Objective: Reduce Energy Cost
Target: Reduce overall energy cost by 10% by 2009
Start Date: January 1, 2008
Completion Date: January 30, 2009
Energy Improvement Management Program Lead: Jones
Tasks Staff Timeline Estimated Time Estimated Costs
(Person Hours or FTEs) (e.g., equipment)
Task: Establish month-to-month normalized
baseline data on energy use and cost for
(calendar year) 2008
Deliverable: Monthly report of gross and
normalized energy consumption and cost19
Task: Post 2008 monthly energy
consumption data in public area
Deliverable: Spreadsheet
Jones
Smith
January 1 to
December 3 1,2008
Each month's data posted within 30
days of end of month; complete
2008 data posted by 01/30/09
8 hours to establish
normalization protocol; 1
hour per month to update
2 hours (10 minutes per
month)
Install Automatic Lighting Controls in Operations Building *
Task: List of electrical contractors with
recommendations
Deliverable: Annotated memo
Task: Issue RFQ
Deliverable: RFQ
Task: Review responses to RFQ
Deliverable: Memo with contractors ranked
Task: Enlist contractor
Deliverable: Signed contract with electrician
Task: Install automatic lighting controls
Deliverable: Installed system
Purchasing
(Anderson)
Contracts
(Grant)
Contracts
(Grant)
Contracts
(Grant)
Johnson
By January 15, 2008
By January 31, 2008
Responses due by February 21 ,
2008; review complete by March 7,
2008
By March 15, 2008
By April 30, 2009
4 hours
4 hours
8 hours
4 hours
4 hours
$3,000 capital cost
(estimated)
Replace Pump # 1 with more efficient pump*
Task: Determine optimal pump size using
PSAT software tool
Deliverable: Memo, with analysis reviewed
by engineering
Task: Research pump manufacturers
Deliverable: Annotated memo
Task: Purchase pump(s)
Deliverable: Completed transaction
Task: Install replacement pump(s)
Deliverable: Installed pump(s)
Monitor, measure, and communicate 2009
data on energy cost from 2008 baseline
Task: Present current status relative to target
10% reduction
Deliverable: Presentation to staff on year-to-
year change in energy costs
Engineering
(Clark)
Purchasing
Purchasing
Engineering
(Taylor)
Jones
By January 31, 2008
By February 28, 2008
By April 15, 2008
By May 31, 2008
January 31, 2008
32 hours
8 hours
20 hours
20 hours
12 hours
$60,000
(estimated)
*Note: The pump #1 and lighting examples identified as priority areas for energy improvement in Session 3 become tasks (i.e., replace pump
#1 and install automatic lighting) in our target to reach a 10% reduction in energy costs by 2009.
19- ENERGY STAR'S Benchmarking Tool
Session 5, Module 1
53
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Energy Improvement Priority Activities/Operations: Utility wide
Objective: Increase energy from renewable energy sources
Target: Increase energy purchased from renewable energy sources by 10% by 2012
Start Date: January 1, 2008
Completion Date: January 30, 2012
Energy Improvement Management Program Lead: Smith
Tasks Staff Timeline
Estimated Time Estimated Costs (e.g.,
(Person Hours or FTEs) equipment)
Task: Establish baseline information on
existing purchases of renewable energy
as a percent of 2007 overall purchases
Deliverable: Memo or spreadsheet
Task: Identify potential sources of
renewable energy and make
recommendations
Deliverable: Memo
Task: Adopt recommendation(s) and
purchase renewable energy
Deliverable: Contracts to purchase
renewable energy
Task: Monitor, measure, and
communicate on 2009 purchases as a
percent of annual 2009 purchases
Deliverable: Presentation to staff
Smith
Smith, Jones
Jones
Jones
By January 8, 2008
By February 8, 2008
First purchase by
April 15, 2008
January 31, 2009
4 hours
12 hours
20 hours
20 hours
Cost premium of no greater
than 1 .5 cents per kWh
Provide a reality check on your plans with line managers, department heads, and supervisors whose operational staff
and management are involved.
Are the appropriate staff members responsible?
Does the timing conflict with other operational priorities?
Do the tasks seem logical and sufficient to accomplish the target?
Now that you have drafted your utility's Energy Improvement Management Programs, you need to get top management's
commitment and approval and communicate your objectives and targets and programs to utility staff.
Step 2: Get Top Management's Commitment and Approval
Top management needs to ensure that your Energy
Improvement Management Programs are integrated with
other organizational goals and are consistent with the
overall mission of your utility or municipality. Management
also needs to know what the efforts of achieving these goals
will cost in terms of staff time and capital expenditures, the
length of time needed to accomplish this effort, how it will
interface with periods of high operational priority, and who
will be involved in the tasks. This information will help top
management prepare and approve budgets for the projects
and assign project managers.
Remember
Refer back to the Typical Water and
Wastewater High-Use Energy Operations and
Associated Potential Energy Saving Measures
table (page 37) to help you develop potential
objectives and targets and subsequent Energy
Improvement Management Programs.
Session 5, Module 1
54
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Step 3: Communicate Your Objectives and Targets and Energy Improvement Management
Programs
Communicate your objectives and targets and action plans to employees, suppliers, contractors, and external
stakeholders. Open communication will increase buy-in of your energy goals and what you are trying to accomplish. In
addition, communication of your goals and plans will keep the utility's energy improvements on everyone's radar and
ensure that your organization is on the path to continuous improvement.
Involving Contractors and Temporary Staff
On-site contractors and temporary staff may work in areas in which objectives and targets have been set.
Communicating your objectives and targets and Energy Improvement Management Programs to contractors and
temporary staff is important and can get you needed buy-in on what you are trying to accomplish. Also, keep in mind
that your suppliers can help you in meeting your objectives and targets (e.g., by providing information on more energy
efficient technology or equipment and/or opportunities for renewable energy).
Apply Your Knowledge
Using the objectives and targets developed by the Energy Team and the example Energy Improvement Management
Programs on pages 53 and 54, develop action plans for your water or wastewater utility. Attached in Appendix J is a
blank Energy Improvement Management Program table that you can use with your Energy Team.
©
CONSIDER THIS...
Begin with one or two objectives and targets and make sure they are attainable and feasible for your utility.
Your utility can build on the original objectives and targets once you have experience and buy-in from staff on
implementing energy improvements. Don't forget to report progress regularly as you move toward your goal!
Session 5, Module 1 55
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MODULE 2: Develop Management System 'Operating Controls' to Support
Energy Improvements
Module Objective: To learn how to review, identify, and implement operating controls for your priority energy
management activities and operations.
You've just completed an energy efficiency review of your utility,
established objectives and targets, and set up energy action plans to
implement your targets. So what's next?
Remember from Session 3, Module 3 - for every energy activity or
operation you determine to be a priority (above the threshold you
established in the example - pump #1 and lighting), your utility will
need to verify current controls (e.g., records, procedures, training) or
implement new or additional controls to manage your priority energy
issues.
Remember
Build on what you have in place
and what currently works. Do you
have an existing training procedure
or plan? Or do you do a lot of on-
the-job training? If so, build your energy
management training on what you have. If
you rely on an outside provider, contact them
to see what they are doing in terms of
including energy topics in their programs.
Operating controls include:
Training;
Communication;
Controlling documents and managing records; and
Work instructions/SOPs and operations/equipment manuals for energy improvements.
TRAINING
Why train employees about energy management and your utility's efforts to improve efficiency and reduce cost?
Every employee can have potential impacts on energy demand and use; and
Any employee can identify positive ways in which to improve energy management.
To improve your energy management training and awareness, include the following steps.
Step 1. Assess energy management training needs, develop the training, and integrate energy training with current
training and methods your utility already has in place.
Step 2. Conduct energy management training and document and maintain training records.
Step 3. Develop a system procedure/plan for maintaining energy management training and awareness and/or
integrate into ongoing and future training plans.
Assessing energy management training needs ask yourself:
What activities affect our utility's demand and use of energy?
What activities involve an identified priority for energy improvements?
What types of training do we currently conduct for these areas?
Can energy management roles/responsibilities/controls be included in this training?
Can we tweak current training material or ask our training provider to include energy issues or do we
need to develop new materials?
How do we currently maintain training records?
Session 5, Module 2
56
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STEP 1: Assess Energy Management Training Needs
Training relating to energy improvements should be tailored to the different needs of employees and to
various levels or functions in your utility. Who needs to receive energy management training at your
facility? In assessing training needs for your utility, consider both general and specific needs. For example:
"What broad understanding of energy issues does a particular employee need?"
"What operating controls associated with energy management affect their daily work, and what happens if
they aren't followed?"
"What type of training does the employee currently receive?"
STEP 2: Conduct, Document, and Maintain Training Records
Just like any other training you conduct, you should document and maintain (for verification purposes) your
energy management training. Consider how you currently track training and participation.
Energy Management and Competence
Implementing and maintaining energy management improvements at your utility may mean that employees in
certain jobs, particularly operations that affect or are associated with energy need to have a combination of
education, training, and experience to do their day-to-day tasks and ensure that your utility is meeting its energy
management commitments. Make sure you maintain records of their experience and training (e.g., certifications,
education, and previous job records) just as you would any other verifiable training records at your utility.
STEP 3: Develop a Training Plan/Procedure and/or Integrate Energy Management
Training and Awareness into Current Training Plans
When you're satisfied that your process for
implementing an energy management training
program is sufficient, document what you want to do
in your current training plans/programs. This will
help ensure that your employees stay current with
your organization's energy controls and commitments
now and in the future.
Remember
Most organizations already have some type of
training in place before they begin
implementing energy management programs.
Build off your existing training procedures and
plans.
COMMUNICATION
Proactive communication is crucial for the effective implementation of your utility's energy management
program and goals.
The actions in this portion include:
Step 1. Determine what energy issues need to be communicated internally and externally.
Step 2. Determine who has an interest and who has a potential to influence your energy management goals.
Step 3. Develop internal and external communications plans.
STEP 1: Determine What Energy Issues Need to be Communicated Internally and
Externally
A good place to start in developing a communication strategy is to look at how your utility currently
communicates messages internally and externally and to whom. How do managers currently get information to
employees and receive information and communication back from employees? Leverage effective strategies that
are already in place, especially those that are familiar to personnel such as an emergency communications plan.
Session 5, Module 2
57
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Internal Communication Vehicles: ^^^^^^^^^_^^^^^^^^^
Remember
Employee meetings
Environmental, health, and safety training
Working lunches
Most organizations have some type of
communication process in place before they
begin implementing energy management
programs. Build off your existing
Newsletters communication vehicles and plans.
Pay stub inserts
Intranet postings
Bulletin boards
"Tool box" meetings
Once you have an internal communication strategy in place, the next step is to determine your external
communication strategy and with whom you are currently communicating. As an organization that regularly
reports to the public, you probably already have external stakeholders that you communicate with, including city
commissioners or town boards, local citizens and citizen groups, the mayor or town manager, local energy utilities,
contractors and vendors, and regulatory agencies.
It will benefit your utility to have a proactive internal and external communication program. Reach out internally
as well as to key external stakeholders about why you have chosen to implement energy management programs
and what you want to achieve.
Common Water and Wastewater Utility External Interested Parties (i.e. Stakeholders):
Local citizen/community groups
Regulatory agencies
Energy advisory groups
Local officials
Contractors and vendors
Energy utilities
Internally Communicate Your:
Energy Policy
ENERGY STAR benchmarking results
Energy audit results
Energy improvement priorities
Energy Improvement Management Programs
Objectives and targets
Energy savings progress and success stories
Externally Communicate Your:
Energy Policy
ENERGY STAR benchmarking results
Energy audit results
Energy improvement priorities
Energy objectives and targets
Requirements to suppliers and contractors
Annual reports including energy highlights and successes
(e.g., Drinking Water Consumer Confidence Report)
Session 5, Module 2 58
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STEP 2: Determine Who has an Interest and Who has the Potential to Influence Your
Energy Management Goals
Once you've determined your current audience, identify additional external stakeholders or new methods of
communicating by determining: who potentially has a vested interest and who potentially has an effect on energy
management improvements. In determining what to communicate to your external interested parties, your
organization will need to assess the extent to which your strategy will be proactive. Ask:
What is your current level of public acceptance?
What are your external stakeholders' concerns?
Have you had public relations issues in the past that require certain strategies or cautions?
Since communication is most effective when it's a two-way dialogue, what type of input from them would
interest you most and be most useful?
What will be the return on investment of a proactive approach?
STEP 3: Develop Internal and External Communications Plans
When you've determined what and to whom you will communicate, integrate the information with your current
communication plans and procedures. For help with your communications plan(s), review U.S. EPA's "Getting
in Step: A Guide for Conducting Watershed Outreach Campaigns" using the following link:
(www.epa. go v/owow/watershed/outreach/ documents/ getnstep.pdf).
CONTROLLING DOCUMENTS AND MANAGING RECORDS
Have you ever come across a document (e.g., a policy, procedure) and found that you couldn't tell whether it
was current, revised, approved, or obsolete? If your utility wants to make sure that everyone is working from the
most current and approved documents, then documents must be "controlled" and records managed so that they
can be easily located, periodically reviewed, updated as needed, and removed when obsolete and replaced with
current versions.
The steps to manage your documents and records include:
Step 1. Review current document control and records procedures.
Step 2. Develop a format and procedure(s) for controlling documents and managing records.
STEP 1: Review Current Document Control and Records Procedures
Review what procedures/systems you have in place to control
documents and manage records and those that will work best
for your utility, including:
Will a paper or electronic process or maybe a combination
of both, work best?
Who has the responsibility and authority for creating and
revising documents?
Which documents should be controlled so to ensure that
employees refer to the correct version?
Does your organization currently employ a standard
document format and numbering system?
TIP!
££*> What's the difference between a
3| document and a record?
,m
Documents are written instruments
used to keep a management system functioning.
These may be revised or changed as your
management system develops.
Records provide evidence or proof that
the organization is actually implementing the
management system as designed and the
procedures and work instructions are being
carried out.
Session 5, Module 2
59
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STEP 2: Develop a Format and Procedure(s) for Controlling Documents and Managing
Records
When you've developed a process for managing and controlling your documents and records, integrate that
process with your current systems. Identify and assign responsibility for preparing documents associated with
your utility's energy management programs and procedures, making necessary changes, and ensuring that
documents are kept current. In other words, your utility should have a clearly defined system that designates
authority for review and approval of documentation at various levels.
Records Management Check
Have you identified what records need to be maintained?
Have you determined the period of time necessary for retaining your records?
How are your records stored and retrieved (electronic vs. hard copy)?
Are you maintaining all the records needed to support your utility's energy improvement priorities?
Are records easily accessible?
For samples of Document Control and Records procedure(s) from water and wastewater facilities, use this link
(http://www.peercenter.net/ewebeditpro/items/OllFW697.pdf) and refer to Section VIII. Also, additional procedures
from utilities can be found here: http://www.peercenter.net/sector/wastewater/emstoolbox.cfm, under sample Environmental
Management System (EMS)Documentation.
WORK INSTRUCTIONS/SOPs AND OPERATIONS/EQUIPMENT MANUALS FOR ENERGY
IMPROVEMENTS
Operating Controls
Documents that specify the way to execute a certain activity or operation are considerd operating controls.
Operating controls are assigned to activities and operations involving priority energy improvement opportunities
and are documented through the use of work instructions, standard operating procedures (SOPs), manuals, and
other programs. Examples include HVAC, equipment maintenance and calibration procedures, and automatic
lighting and equipment documents or programs.
Achieving energy management improvements requires managing or "controlling" the utility's operations
associated with your utility's energy improvement priorities, objectives and targets, and regulatory requirements.
What are your operating controls and how do you document them? You probably already have procedures, work
instructions, permits, maintenance manuals, and similar in place for many of your operations and services.
The following steps will allow your organization to determine which energy operations should be covered by
documented procedures and work instructions and how those operations should be controlled.
The steps to manage your energy improvement operations include:
Step 1. Review, improve, or draft energy specific operating controls.
Step 2. Review maintenance and calibration requirements.
Step 3. Check operating controls.
Step 4. Communicate operating controls.
STEP 1: Review, Improve, or Draft Energy Specific Operating Controls
Once you have a list of operations and services that require documented operating controls, look at what you
already have in place to manage these activities. Do your current procedures reflect what is actually being done
at your facility? How do you control the operations now and are the controls adequate? Can the employees,
whose work the procedures describe, easily understand them? What improvements to the current procedures do
they suggest?
Session 5, Module 2
-------
One method to consider when developing or modifying your operating controls is to have someone observe a task
being conducted. The person would write down the steps, photograph key meters, valves, etc., and put together
the operating control (or work instruction) in written form. The writer should ask: Why are we doing the task in
that particular way? Has the work instruction been reviewed by everyone who completes the task? This will
allow the best practices to be used and ensure that all shifts will perform the task in the same way.
STEP 2: Review Maintenance and Calibration Requirements
Once you have identified operations that require control and have documented your procedures and work
instructions, determine the maintenance and calibration requirements for these operations and services, and then
document and maintain these records. Don't ignore the maintenance manuals that come with your energy and
energy related equipment (e.g., HVAC or pump manuals).
Review the maintenance activities you are currently conducting. Are they sufficient? Timely? Preventive or
reactive? Some organizations place critical monitoring equipment under a special calibration and preventive
maintenance program. This can help to ensure accurate monitoring and make your employees aware of which
instruments are most critical for energy monitoring purposes.
STEP 3: Check Operating Controls
About two or three months after you have documented and implemented your operating controls, check if they
are working according to your plan. Here are some questions to focus on:
Have you identified all operations and activities associated with energy improvement priorities?
Are these operations and activities under control through programs, documented procedures, work
instructions, etc.?
Have you communicated and trained your employees, suppliers, vendors, and contractors on applicable
procedures, work instructions, and policies?
What benefits/improvements are you experiencing?
What adjustments need to be made?
STEP 4: Communicate Operating Controls
Review your energy-related documented procedures and work instructions with all applicable employees.
Discussing your procedures with the people who will implement them will help secure buy-in. Also
remember to communicate operating controls with applicable vendors, contractors, suppliers, and temporary
staff.
Examples of energy operations and services that may require operating controls:
Equipment/tool calibration;
Pump maintenance; and
Management of contractors.
For many types of water and wastewater equipment, operating controls make a real difference in energy
consumption. For example, pumps and motors are most efficient at particular settings.
Note: As you update or develop homeland security and/or incident response and emergency preparedness and
response plans, procedures for potential power failures could also be developed. Consider what connections these
procedures might have with energy improvement programs.
Session 5, Module 2
-------
o
CONSIDER THIS...
Build your energy plans, programs, and documentation on what you already have in place.
Employees closest to the operations needing control should be involved in developing improved work
instructions and SOPs.
For examples of operating controls for energy operations, review Appendix K.
Session 5 Resources & Tools
EMS Handbook for Wastewater Utilities: http://www.peercenter.net/toolkit/5tep By Step.cfm
Moving to the Next Session
In Implementing Energy Improvement Programs and Building a Management System to Support Them, you completed action
plans for your energy objectives and targets and developed operating controls for the energy activities that you
determined were priorities. In the next session, you will measure the progress of your energy targets, establish periodic
energy audits, a corrective action program, and a process to continually review legal and other requirements and your
energy goals with management.
Session 5, Module 2 62
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SESSION 6: Monitoring and Measuring Your Energy Improvement
Management Programs
So far, you've identified your current status on energy performance,
identified priority areas for improvement, set objectives and targets, and
developed energy action plans or Energy Management Improvement
Programs. You have also put procedures, work instructions, operating
controls, and training in place to ensure that your priority energy
improvements are managed.
The next step is to monitor and measure your progress in meeting your
energy objectives and targets and assess your compliance toward meeting
your regulatory requirements. Monitoring and measuring allows you to
track your performance and improve efficiency by managing what you do.
The results of your objectives and targets and other efforts are easier to
demonstrate when current and reliable performance data are available and
referenced against a defined baseline. This data can help you demonstrate
the value of your energy management activities to top management and
to other vested parties such as utility staff and your local community.
In this Session on Monitoring and Measuring, you will develop ways to:
1. Review what you currently monitor and measure for energy.
2. Determine what else you need to monitor and measure for
your priority energy improvement operations.
3. Develop a plan for maintaining the efficiency of energy
equipment.
4. Review the progress of your energy targets.
5. Implement actions to adjust or correct when you are not
progressing toward your energy goals.
6. Monitor/Reassess compliance status.
Let's first review a few key terms that will help as you determine what to
monitor and measure for energy targets.
Key Characteristic: An element of an energy target, operation, or activity
that can be measured or evaluated for energy performance.
Performance Indicator: What exactly you will measure to evaluate and
verify performance improvements in relation to a specific target. For
example, measuring the direct and indirect emissions of carbon dioxide
(CO2) per year from established baselines to check the progress in meeting
your target of 25% CO2 reduction from 2006 levels.
Act
Check
Keys to Success
0 Make sure the data you collect is
useful and has meaning for what
you want to accomplish
0 Hold regular progress reviews of
the Energy Improvement
Management Programs to ensure
you are on track to meet your
targets
0 Communicate the status and
progress of your energy targets
to staff, management, and other
stakeholders
Session 6
63
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MODULE 1: Review What you Currently Monitor and Measure for Energy
Module Objective: To review the energy and energy-related data and information you currently collect.
In Session 2, you identified your current status on energy consumption and energy performance. This required identifying
a number of data elements and sources. In Session 4, you established energy targets and identified performance indicators
that could be used to measure your progress. Therefore, you've compiled many of the methods and tools you'll need to
monitor and measure your energy management progress.
Apply Your Knowledge
Using the example below and the blank worksheet in Appendix L to document what you are currently measuring and from
where you obtain this data. Refer back to Session 2 as applicable.
A water or wastewater utility might want to record the following:
Data Element Units Data Source
Overall electricity consumption
Peak electricity demand
Electricity demand by system
(HVAC, lighting, pumps, other)
Wastewater treated
Natural gas consumption
Methane captured
Electricity generated
Steam supplied
NOx Emissions
Gasoline purchased
Diesel fuel purchased
Biodiesel fuel purchased
kWh per month
kW
kWh per day
Million gallons per day
Million BID per month
Million BID per month
kWh per month
Million BTU per month
Pounds per day
Gallons per month
Gallons per month
Gallons per month
Utility bills, Automatic Energy Management
System
Utility bills, Automatic energy management
system
Automatic Energy Management System
Pump records
Utility bills
Combined Heat and Power (CHP) system
CHP system
CHP system
CEM on CHP system
Energy Consumption Invoices
Energy Consumption Invoices
Energy Consumption Invoices
o
CONSIDER THIS...
When you have two sources for data, list both. It can be useful to cross-check your data.
Session 6, Module 1
64
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Module 2: Determine What Else you Need to Monitor and Measure for
Your Priority Energy Improvement Operations
Module Objective: To determine what data your utility will need to collect to achieve its energy targets and to manage
energy improvements.
Information collected by monitoring and measuring your key energy issues can help you determine what you need and
answer the questions:
Is your energy improvement program being carried out as planned?
Is your utility achieving its energy commitments and its objectives and targets?
What information is most valuable?
Look back at your energy objectives and targets and energy plans from Sessions 4 and 5. What energy data and
information needs to be collected for you to achieve your energy targets? What are the key characteristics of the operations
and related equipment and how do you measure these characteristics to ensure proper energy performance?
Referring back to the pump (#1) and lighting energy opportunity examples, let's make a sample list of the operating
controls, key characteristics, monitoring and measurement methods, and calibration needs for operating and maintaining
pumps and lighting.
Energy-Related Energy-Related Operational Controls Key Characteristics
Operation Impacts of Operation or
Activity
Monitoring or
Measurement
Methods
Equipment & System
Calibration Needs
Operate and
Maintain Utility Pumps
Lighting for
Operations Building
Overall energy cost
($)
Electricity
consumption (kWh)
Peak electricity
demand (kW)
Overall energy cost
($)
Electricity
consumption (kWh)
Pump maintenance
manual
Time-of-day pricing
Pump schedule
(operations deferred
to off-peak hours
when possible)
Float settings
Automatic lighting
control system
Work instructions on
turning off unneeded
task lighting
Work instructions on
limiting overrides of
automatic controls
Energy (kWh) per
million gallons
Load profile
Cost of energy
($/kWh)
Peak demand charges
($/kW)
Energy (kWh) per
month
Cost of energy
($/kWh)
Track energy
consumption
Track volume pumped
Note changes in
electricity cost
Calculate kWh/MG
Chart daily and
monthly load profile
Monthly energy report
Track energy
consumption
Note changes in
electricity cost
Include in monthly
energy report
Flow meters
Electric Meters
SCADA
Automatic lighting
control system
Session 6, Module 2
-------
Apply Your Knowledge
Using the sample table on the previous page and the blank worksheet in Appendix M, draft a list of the operating controls,
key characteristics, monitoring and measurement methods, and calibration needs for the priority energy opportunities
your Energy Team came up with in Session 3.
Calibration
Calibration of your systems is an extremely important aspect of
maintenance. Your equipment may have calibration procedures set by
the manufacturer that must be followed. You may need to document
calibration requirements and dates for equipment that affect your
targets or your compliance requirements. Example of calibrated
equipment could include flow, pH, chlorine monitors, or thermostats
used by the HVAC system. Make sure a regular schedule is in place to
calibrate the equipment and make sure you retain your calibration
records. Remember, some equipment may be calibrated off-site, so
make sure the vendor supplies you with a copy of the records.
Think about what else
,
<*[//'
Remember
Don't forget about the maintenance
manuals that come with your energy
operations equipment. They may
contain calibration and/or
measurement methods for your equipment. In
addition, your equipment may have calibration
procedures set by the manufacturer, and often
equipment comes with annual maintenance
provided by the vendor.
"Monitoring and measurement takes the
pulse of an organization. Their application
can be the most important tools in a
manager's toolbox with regard to setting
goals, objectives and targets, and improving
overall operations."
Rick Bickerstaff
Commissioners of Public Work
Charleston, South Carolina
you might want to monitor and measure. Your performance indicators
help you measure progress towards your energy goals and help you
demonstrate compliance with legal and other requirements.
In the course of establishing the tasks needed to meet your energy goals,
you may have identified additional data needs. Add those as applicable
as well. For example, reducing NOx emissions may not be a priority
objective if your utility is well below its limit but you need to monitor and
measure the quantity of NOx as a regulatory parameter.
Review the worksheet below for example utility requirements, their
associated performance indicators, and potential data sources.
Requirement
Keep NOx emissions under 1 ton per ozone
season
Performance Indicator
NOx emissions (Ibs per ozone season)
Data Source
Continuous Emission Monitor on CHP system
Ensure fewer than 5 power outages of one
hour or more each year
Number of power outages exceeding one hour
Automatic Energy Management System
Ensure fewer than 3 unscheduled service calls
for CHP system per year
Service calls for CHP system
Energy Consumption Invoices
o
CONSIDER THIS...
If you are going to spend the time and resources to collect information, make sure that it is useful and
meaningful to your utility.
Session 6, Module 2
66
-------
MODULE 3: Develop a Plan for Maintaining the Efficiency of Energy Equipment
Module Objective: To ensure that energy-related equipment is properly maintained.
Energy equipment can be a substantial investment for your organization. A methane capture system feeding a combined
heat and power system, a back-up generator, and an automatic energy management system are significant capital
investments. Proper maintenance can ensure that these systems operate smoothly and reliably. Neglecting maintenance
can lead to system failures and possibly dangerous situations. The details of the necessary maintenance will vary from
system to system but will typically be provided by the vendor.
For your energy equipment or system, note the following.
Who is responsible for maintenance? With new equipment, does the vendor provide maintenance for the
first year?
What is the schedule of maintenance actions?
Are all the necessary resources available for maintenance (e.g., fuel, spare parts, filters, etc.)?
Are there specific outside contractors brought in to perform maintenance, or is there a process for
finding such contractors?
Is performance evaluated on a regular basis?
Where are the maintenance records and performance evaluations of the equipment or system recorded?
Energy equipment performance will vary depending on what type of system is included. For example, performance
indicators for a back-up engine generator might include the following:
Start-up time;
Fuel consumption;
Electricity generation; and/or
NOx emissions.
For an energy system maintenance check, an example performance indicator for an automatic energy management system
(meters and a software program) would be very different and might include the following:
Degree of agreement with utility meters;
Number of manual adjustments/overrides needed to automatic controls; and
Number of technical support calls needed in past quarter.
©
CONSIDER THIS...
Proper energy equipment and system preventive maintenance can save repair costs and improve performance
and reliability.
Session 6, Module 3 67
-------
MODULE 4: Review the Progress of your Energy Targets
Module Objective: To develop a plan for regular, periodic reviews of your Energy Improvement Management Programs.
You now have the information you need to measure progress and use the information in regular, periodic reviews of your
Energy Improvement Management Programs. This will help you get a clear picture of your performance and progress
relative to your established energy targets.
In developing your review plan, consider the following.
When is the review conducted?
How is progress measured?
Who is responsible for the review? Are they sufficiently trained?
What will be done with the outcome of the review?
The bullets below provide a sample method for a utility to periodically review the progress of their energy targets.
Review your Energy Improvement Management Programs within six months after initial implementation.
Assess your energy targets using the performance indicators you developed for each task in the Energy
Improvement Management Programs.
The status and progress of each task can be reported by the applicable staff listed in your plans.
Use the outcome of the review as a scorecard for each target indicating the progress, the next steps, and any
corrective actions recommended.
Apply Your Knowledge
Using the example Energy Improvement Management Programs Progress Review* on the next page and the blank
worksheet in Appendix N, sit down with your Energy Team and develop a Progress Scorecard based on the energy
target(s) you set with your utility in Sessions 4 and 5.
* Note: Your utility may wish to consider a different method to evaluate the energy target's performance.
Conducting Periodic Energy Audits
Conducting a periodic energy audit is another type of review or
status check you could consider for your energy management
plans and programs. Remember from Session 2 that you
conducted a baseline energy audit for your utility. With
periodic, follow-up energy audits, you can have a clear before
and after characterization of your energy management
activities. This is particularly important if you are installing a
number of new systems or changing operational practices.
Remember, you'll want to ensure that you actually achieve or
exceed the energy savings you set out to accomplish. Not every
periodic review needs to be a full-scale energy audit, but audits
should be a regular part of assessing your performance.
TIP!
fit is sometimes beneficial to consider a third
party performance contract to implement
'" some or all of your energy-related initiatives.
A useful tool to see if you are a good candidate for
guaranteed energy performance can be found at:
http://www.ener gyservicescoalition.org
/ resources /Ssteps .htm.
"I wish we had documented costs and cost
savings earlier. Measuring and monitoring
are the most important things you can show
rate payers and tax payers the actual money
you have saved."
Mark young
Director, Lowell Regional Wastewater Utility
Lowell, MA
Session 6, Module 4
68
-------
Energy Improvement Management Programs Sample Progress Review Table
Objective Reduce Energy Costs
Target for 12/31/08
Status at 12/31/07
Tasks Identified
Tasks Accomplished
Observations
Corrective Actions Needed
Next Steps
Reduce overall energy cost by 10% from 2006 levels by 2009
Energy cost reduced by 6% from 2006 levels
Install automatic lighting controls
Replace pump #1
Replace windows and improve insulation around doors
Increase CHP generation by 10%
Evaluate potential for participation in demand response program
Automatic lighting controls installed
Replaced windows and improved insulation around doors
Increased CHP generation by 12%
New pump purchased but not yet installed due to contractor delays
Better insulation allows for down-sizing of HVAC system - which is in need of replacement
Efficiency of pump from ABC judged to be not compatible with operational
and energy efficiency requirements
Have purchasing review pump suppliers to find pump with appropriate operational and energy efficiency
requirements
Replace HVAC system with ground-source heat pump
What do you do if your utility progress report or energy audit status check shows that your energy targets are not
performing as intended? In this case, first determine the reason or cause of why the targets are off course, and then
implement a corrective action to get your energy target back on course. The subsequent module and Session will provide
further information on this topic.
o
CONSIDER THIS...
You've put a lot of effort into developing your Energy Improvement Management Programs and collecting
the necessary information to monitor and measure your performance and progress towards your energy
targets. Regular reviews will make sure these efforts will pay off. In addition, have regular checks on the
progress of your energy objectives and targets and report the results to top management and staff.
Session 6, Module 4
69
-------
MODULE 5: Implement Actions to Adjust or Correct When You Are Not
Progressing Toward Your Energy Goals
Module Objective: To identify measures to meet energy targets when current efforts are not as successful as originally
planned.
If you have set ambitious targets, it's possible that one or more may not have been attained by the time the review is
conducted. Weather patterns, electricity markets, contractor schedules, budget cycles, and other factors may have
prevented your utility from achieving everything you set out to accomplish. Use the review to identify why your target
was not met and what can be done to achieve that target in the future. The following are some helpful questions to pose.
Was the target realistic?
An overly ambitious target may be simply unattainable. If a utility set a goal of reducing energy expenditures, but faced
a "perfect storm" of increasing energy prices, increasing volume of water treated, and a particularly cold winter, even the
most ambitious energy management program may be unable to provide a net reduction in energy costs. If your
organization did everything it set out to do but couldn't meet the target, consider revising the target based on this
information.
Were the identified tasks sufficient to achieve the target?
Your organization may have identified tasks to meet the target and accomplished all of these tasks but yet did not achieve
the target. For example, a utility's target may have been to reduce peak energy demand by 20 kW and the identified
measures are estimated to provide that peak reduction. Some measures have uncertain benefits that are estimated based
on experience of similar organizations. Once implemented, the actual demand reduction may turn out to be 17 kW. The
utility may have done almost everything right, but the identified tasks were insufficient to meet the target. The utility can
resolve to add in extra measures next time for a margin of error.
Were some tasks not completed?
A likely reason for targets being unmet is that one or more tasks was not completed. There may be any number of reasons
for this. The team responsible for that task should be prepared to explain the reasons for the delay or omission. Was the
task deemed not feasible? Were there delays due to factors beyond the organization's control? Was the original estimate
on the timing of the task unrealistic?
Did anything change?
As mentioned above, wet and dry flows, weather patterns, electricity markets, contractor schedules, budget cycles,
personnel changes, and other factors may affect how your utility attempts to achieve its energy goals.
Once you've identified why the targets have not been met, identify an appropriate response. This may include revising
the targets, modifying the task list, or providing additional resources to the team implementing a specific task.
If all of your targets have been met with relative ease, take time to applaud your efforts, and then consider setting more
ambitious targets for the next phase of your energy management program.
©
CONSIDER THIS...
There will be "lessons learned" throughout the process of setting targets and identifying tasks. Listen to your
Energy Team as they discuss any difficulties encountered.
Session 6, Module 5 70
-------
MODULE 6: Monitor/Reassess Compliance Status
Module Objective: To learn how to check your compliance with your energy-related legal requirements.
You evaluated your compliance with legal and other requirements in Session 2. Since your energy targets could involve
some changes to your equipment or operations, it is important to repeat this evaluation at regular intervals.
It's time to check if reducing your energy consumption has affected your compliance requirements. From the example, did
installing a new pump, installing automated lighting, or utilizing renewables affect your compliance requirements? Refer
back to Session 2, Module 6 and the compliance baseline review you conducted. Ask the following questions once you've
implemented your energy improvement programs.
How has compliance been affected by your energy conservation measures?
Have any regulations been affected? If so, which one(s)?
Is the regulation up-to-date?
Are we still in compliance according to all pertinent agencies?
Do we expect to remain in compliance?
Are there opportunities to go beyond compliance?
©
CONSIDER THIS...
Priorities may shift with new budget cycles or new regulations. While energy management will be beneficial
to your utility and your community, the scope of measures that you are able to employ may shift with
changing requirements.
Session 6 Resources & Tools
ENERGY STAR's Portfolio Manager: (https://www.energystar.gov/istar/pmpam/)
Moving to the Next Session
In Monitoring and Measuring Your Energy Improvement Management Programs, you determined what you currently do as well
as need to do to monitor and measure and develop an equipment maintenance plan. You also developed a way to
regularly review progress, take corrective action if needed, monitor compliance, and communicate progress. In the next
and final session, you will learn to effectively maintain your energy improvement programs by continuing to align energy
goals with your utility's priorities, apply lessons learned, expand involvement of management and staff, and ultimately
communicate success.
Session 6, Module 6 71
-------
SESSION 7: Maintaining Your Energy Improvement Programs
In this Guidebook, we have demonstrated that it makes good operational
and business sense to utilize a systematic approach to optimize your
energy efficiency and conservation efforts. Through a replicable Plan-Do-
Check-Act approach, the Guidebook has provided step-by-step Sessions and
modules necessary to translate and prioritize your energy improvement
areas and cost savings opportunities into achievable, quantifiable targets.
This Guidebook has also provided real life examples and case studies from
water and wastewater utilities that have already realized the benefits of
setting and achieving energy improvement goals. In addition, don't forget
about the energy tools and resources provided throughout the Guidebook
and the utility practitioners who have experience in systematic approaches
and in implementing successful energy improvement programs.
In this session you will:
1. Continue to align your energy goals with business/operational
goals.
2. Apply lessons learned.
3. Expand involvement of management and staff.
4. Communicate success.
Act
Check
'
Keys to Success
0 Communicate energy
achievements and build on
successes
0 Encourage further staff
involvement
0 Aligning energy goals with
operational objectives and
mission
Session 7
72
-------
MODULE 1: Continue to Align Energy Goals with Business/Operational Goals
Module Objective: To align your energy efficiency and energy cost savings goals with your current or planned business
and operational systems/programs.
As your utility plans and implements its energy improvement opportunities, it is important to ensure that your energy
goals are aligned with your organization's overall business and operational management practices. Here are some
questions you may wish to consider at each of your energy program reviews.
Have our priority objectives changed?
Has the business or policy environment changed in such a way that the targets need revision?
Have new resources or funding assistance programs become available that would support setting additional
objectives or targets?
In terms of setting targets and identifying tasks for energy performance, do we feel that our current process is
sound and efficient?
As an example, consider the replacement of aged infrastructure at your utility through an asset management program. If
you choose to replace older pumps with newer, more energy efficient ones through an energy management program, this
aligns well with your asset management goals.
Utility Case Study: Lowell, MA Regional Wastewater Utility
The following is an example of activities Lowell Regional Wastewater District implemented over time to meet business
and operational goals.
Installed motion sensors and have achieved payback of $20,000/year.
Adopted purchasing and bidding procedures to specify that when equipment needs to be replaced, it will be
replaced with energy efficient equipment.
Installed energy efficient pump motors (VFDs) with payback of 2 years, estimated annual energy costs savings
of $145,538; lifetime reduction of 953 tons of CO2, 2 tons of SO2, and 1 ton of NOx.
Currently exploring potential for on-site generation of energy using effluent flow and microturbines.
Currently directing consultants who are developing a comprehensive upgrade plan to incorporate energy
efficient systems and equipment early and throughout the planning process.
For examples of how Camden County (New Jersey) Municipal Utility Authority has reduced their energy consumption,
review Appendix O.Other examples can be found at:
(http://www.nyserda.org/Programs/Environment/muniwaterwwtTDDComplete.asp) to view a series of water and
wastewater utility case studies from the New York State Energy Research and Development Authority.
"Energy management investment is an asset management tool
that provides daily operational savings with increased process
control."
James L. Jutras
Water Quality Superintendent
Essex Junction, Vermont
©
CONSIDER THIS...
By aligning your energy improvement opportunities with your utility's business/operational goals, your
utility will focus its attention on the priorities that matter most to facility management and the local
community.
Session 7, Module 1 73
-------
MODULE 2: Apply Lessons Learned
Module Objective: To successfully apply what you've learned through implementation of your utility's energy targets
and the examples from your utility peers that have successfully developed energy improvement programs.
Throughout this Guidebook, there are energy tools and resources, as well as case studies and working examples of energy
improvements from water and wastewater utilities that can further assist you as you plan, prioritize, and implement your
utility's energy objectives and targets. Keep the following lessons, provided by water and wastewater utilities, in mind
as you develop the energy goals for your utility.
Communicate success, including the progress of your energy improvement targets, early and often to help
motivate management and employees to the benefits of your energy programs.
Clearly define roles and responsibilities for energy management.
Remember the KISS rule. Keep the methods to review your priority energy improvement opportunities straight
forward and flexible. Remember, this process is not set in stone. If you do not feel the criteria selected are
right or the analysis is working as intended, make a change.
Choose targets that are realistic and quantifiable and that come from your "low hanging fruit" or quick win
energy improvement opportunities.
Contact water and wastewater treatment facilities that have implemented energy improvement programs and
benefit from their knowledge. Members of the Steering Committee that participated in the development of this
Guidebook are eager to share their insights as well.
o
CONSIDER THIS...
Build on the successes and learn from the plans and procedures that did not work that well when developing
and maintaining your utility's energy plans, programs, and goals.
Session 7, Module 2 74
-------
MODULE 3: Expand Involvement of Management and Staff
Module Objective: To learn how to expand the involvement of utility staff in planning and implementing Energy
Improvement Management Programs.
Regardless of the size of your utility or the scope of your energy
fenceline, it is easy to allow energy improvement programs to become
"Steve's" or "Megan's" or "the Energy Team's" program. If a
particular person or group writes your energy management
plans/procedures, does all the training, and is responsible for
implementing most of your energy objectives and targets, what
happens if Steve or Megan or some members of your Energy Team
move on? The investment your utility has made in your energy
improvement program could be in jeopardy.
Ai
Remember
Your Energy Team and other cross-
functional teams can also help the
integration of your energy programs
into other utility systems such as environmental,
quality assurance, conservation, security, or
asset management.
One solution that has proven successful is to expand the involvement of management and staff at your utility. Not only
should your Energy Team be cross-functional, with representation from across the utility, but you should also have
different levels of staff involved including management on your Energy Team. Management's input is critical to the
success of your energy improvement goals and will help ensure buy-in and commitment from your entire staff.
In addition, transferring the experience and knowledge throughout your utility will help capture and maintain institutional
knowledge of the energy program as utility staff retire or move on to other locations and positions. Your incorporation
of energy efficiency/conservation maintenance, calibration, and other requirements into your training programs will also
help keep your energy improvement programs going strong.
Remember, recognizing the accomplishments of individuals or teams is a key to sustaining support and momentum.
Rewarding effort sets the example for what constitutes success and helps motivate employees through increased job
satisfaction. To review a few ideas for ways to recognize personnel for their efforts, use this link
http:/ /www.enerevstar.eov/index.cfm?c=recoenize achievements.internal recoenition.
o
CONSIDER THIS
Involving management and staff from all levels and functions will deepen the experience and knowledge base
for your energy programs. Continue to communicate the message indicating the importance of energy goals
from top management to operations and throughout your utility.
Session 7, Module 3
75
-------
MODULE 4: Communicate Success
Module Objective: To communicate the on-going successes of your utility's energy management plans.
Now that you've developed your utility's Energy Improvement Management Programs, make sure that your employees,
your management, and your community know what you want to accomplish with regard to energy improvement and how
you're doing against your goals.
You may wish to consider attending conferences sponsored by the U.S. Environmental Protection Agency (EPA), by the
Water Environment Federation (WEF), the American Water Works Association (AWWA) or participating on their energy
committees. The National Association of Clean Water Agencies (NACWA) is another organization involved in promoting
sustainable infrastructure. Through these and other trade associations, you can share the benefit of your experiences with
your peers and in turn learn from their experiences.
The ENERGY STAR Program, supported by the U.S. Department of Energy and U.S. EPA, is one opportunity for
demonstrating superior performance in energy management. In addition, many states have a municipal energy challenge
that you can join and enter your water or wastewater treatment plant to reduce your energy consumption. Also, your
electric or gas utility may have a program for recognizing peak demand reductions in the summer months. There are also
many entities that recognize organizations that reduce greenhouse gas emissions.
©
CONSIDER THIS...
Remember, employees and external stakeholders respond best to information that is meaningful to them.
Putting energy performance information in a form that is relevant to each internal and external stakeholder
will increase the likelihood they will act on the information.
Session 7, Module 4 76
-------
CONCLUSION
Energy production and energy use can impact your utility in many areas of operation. Energy production is a major
source of environmental impact that affects air quality, water quality, the depletion of natural resources, and climate
change, while energy usage takes costs from a facility's budget that could be better spent on employee wages/benefits or
to stabilize utility rates. A well thought out and implemented Plan-Do-Check-Act process will conserve energy, reduce
or avoid costs, and reduce the depletion of non-renewable sources of energy as well as minimize the energy production
and usage impacts, strengthening the position of the utility.
As you utilize the information in this Guidebook for your water and wastewater utility, remember the following.
Energy production and use affects air quality, water quality, the depletion of natural resources, and the
generation of greenhouse gases that contribute to climate change.
Wastewater and water utilities' challenges in meeting energy needs and costs are increasing.
Every dollar spent on energy is a dollar that it is not available for employee wages/benefits or to stabilize utility
rates.
Proactively and systematically looking for ways to reduce energy consumption and costs is a critical part of
managing operations.
Tools and resources are available for utilities interested in conserving energy, reducing costs, and increasing
the use of renewable sources of energy.
Many utilities have had great success in improving their energy management but the most effective are those
that integrate energy projects into a sustainable Plan-Do-Check-Act process.
A better managed, more efficient utility enjoys an improved image, position, and relationships with regulatory
agencies as well as tax or rate payers.
-------
RESOURCES/TOOLS
Best Practices for Energy Management, AWWA Research Foundation, 2003.
The Cleaner and Greener Emission Reduction Calculator
Combined Heat and Power Partnership; U.S. EPA
Energy Audit Manual for Water/Wastewater Facilities, published by EPRI, 1994.
Energy Conservation in Wastewater Treatment Facilities - MOP FD-2, published by WEF, hardcover, 1997.
ENERGY STAR'S Benchmarking Tool
ENERGY STAR'S Portfolio Manager
ENERGY STAR Guidelines for Energy Management
EPA's National Environmental Performance Track Program: www.epa.gov/performancetrack
Opportunities for and Benefits of Combined Heat and Power at Wastewater Treatment Facilities, by Eastern Research Group for
EPA, April 2007. Very good on CHP options.
Roadmap for the Wisconsin Municipal Water and Wastewater Industry; funded through Focus on Energy, this roadmap
addresses four key areas of concern that industry representatives have identified: energy use and supply, aging plants and
infrastructure, sustainable water supply, and waste-product reuse.
Roadmap to Energy in the Water and Wastewater Industry, ACEEE, 2005; focused on what industry stakeholders think would
benefit them.
Wastewater Management Fact Sheet: Energy Conservation, U.S. EPA, July 2006; discusses energy audits, renewable energy,
and other options.
Water & Sustainability (Volume 4): U.S. Electricity Consumption for Water Supply & Treatment - the Next Half Century, EPRI
Topical Report, March 2002.
Water-Energy Relationship, CEC staff paper, June 2005. This document focuses more on water treatment but has a fair
amount of (California-specific) material on energy demands for wastewater treatment, including figures of kWh per
million gallons. This document also has a great list of references.
Watergy: Taking Advantage of Untapped Energy and Water Efficiency Opportunities in Municipal Water Systems, Alliance to
Save Energy, 2002. Very much its own sort of management approach, with case studies from all over the world.
78
-------
APPENDICES
Ensuring a Sustainable Future:
An Energy Management Guidebook
for Wastewater and Water Utilities
-------
SESSION 2: Appendices
Appendix A
Utility Case Study: Essex Junction, Vermont Wastewater Treatment Facility
Turning Methane into Money: Cost-Effective Methane Co-Generation Using Microturbines at a
Small Wastewater Plant ~ Paper
-------
Essex Junction, VT
Project Summary
In an effort to cut operating expenses and keep
wastewater rates stable, the Village of Essex Junction
partnered with Efficiency Vermont, Northern Power
Systems, and Hallam Associates, Inc. to incorporate
methane-fueled co-generation using microturbine
technology into the wastewater treatment process.
Methane-fueled co-generation has been implemented at
many large wastewater facilities in the United States, but
is often not considered cost effective for smaller plants.
The Essex Junction facility is the first of its kind in New
England, confirming the viability of small-scale
application of this process.
While treating wastewater, the waste sludge is processed
in an anaerobic digestion tank, meaning the tank has no
oxygen. This part of the process stabilizes the sludge
and reduces its volume. Methane gas is produced from
the anaerobic digestion. In the past, the methane gas
was collected and burned in a flare. Now, methane-
fueled co-generation allows nearly 100% of the
methane to be used as fuel for two microturbines that
generate electricity. The heat emitted from this process
is then captured and used to heat the anaerobic
digestion tanks.
Methane-fueled co-generation is a method of producing
electricity and creating usable heat that enables the
facility to save energy and money. It is also a great
example of renewable and distributed generation
efforts.
The Village of Essex Junction and Efficiency Vermont
were honored with a 2003 Vermont Governor's Award
for Environmental Excellence and Pollution Prevention.
Project Facts
The need: To reduce operating costs of the
wastewater treatment facility.
The solution; Use waste methane gas that is
already collected on-site to generate electricity,
thereby reducing the need for commercial
energy.
Efficiency Vermont
your resource/or ene$y saufhgs
www.efficiencyvermont.com
Owner:
Village of Essex Junction
(802) 878-6943
Design/Build:
Northern Power Systems
Waitsfield, VT
(802) 496-2955
Engineer:
Hallam Associates, Inc.
South Burlington, VT
(802) 658-4891
Additional Funding Support:
Biomass Energy Resource
Center
Montpelier, VT
(802) 223-7770
NativeEnergy
Charlotte, VT
(800)924-6826
United States Department of
Energy
http://www.energy.gov
Energy efficiency
upgrade costs
Estimated first year utility
bill savings
Energy efficiency
investment payback
(after incentives paid)
Estimated lifetime
customer savings (15 years)
$303,000
$37,000
About 7 years
$555,000
Efficiency Vermont was created by the Vermont Legislature and the
Vermont Public Service Board to help all Vermonters save energy, reduce
energy costs, strengthen the economy and protect Vermont's environment.
Efficiency Vermont is currently operated by Vermont Energy Investment
Corporation (VEIC), an independent non-profit organization under
contract to the Vermont Public Service Board. VEIC is a Vermont based
organization, founded in 1986.
-------
Turning Methane into Money: Cost-Effective Methane Co-Generation
Using Microturbines at a Small Wastewater Plant
Gillian Eaton, Vermont Energy Investment Corporation
James L. Jutras, Village of Essex Junction, Vermont
ABSTRACT
Application of microturbines for methane-fueled combined heat and power generation
represents an innovative, renewable energy technology. While methane-based co-generation
has been widely implemented at large wastewater facilities, it is generally not considered to
be cost-effective for smaller plants. The Village of Essex Junction, with the support of
Efficiency Vermont, has successfully implemented microturbine technology at its 2.0 million
gallon per day (MOD) average-flow, municipal wastewater treatment facility, and can provide
firsthand information on its financial benefits. The Essex Junction facility design is 3.3 MGD
with flows at 2.0 MGD.
The Essex Junction co-generation project installed two, 30 kilowatt (kW)
microturbines that combust waste methane gas to generate electricity. Waste heat from the
microturbines is used to maintain 100-degree Fahrenheit temperatures for the site's anaerobic
digestion process. Total system efficiency of electricity and heat generation is greater than
80%. With nearly 100% use of its waste methane, the facility now saves approximately
412,000kilowatt-hours (kWh) (36% of annual usage) and $37,000in electricity costs per year.
As a result, more than 600,000 pounds of carbon dioxide emissions from power plants will be
prevented because of this project.
The Essex Junction project is the first of its kind at a small New England wastewater
facility. Similar projects could likely be implemented at 5-15% of the nation's 16,000
publicly-owned wastewater treatment facilities. Efforts to expand methane-based co-
generation at wastewater facilities would yield significant energy savings, while also
supporting pollution prevention, renewable energy, and distributed generation efforts. This
paper will describe the benefits of methane-fueled microturbine co-generation, provide
lessons learned from the experience of a 2.0 MGD facility, and show the cost-effectiveness of
this innovative technology.
Introduction
The Village of Essex Junction, Efficiency Vermont, and other project partners were
able to leverage each other's technical and financial resources to complete a project that will
help Essex Junction's rate payers for years to come. While many municipalities are
struggling with maintaining infrastructure in the face of increasing costs, there are innovative
and effective ways to increase efficiency, conserve energy resources, and reduce operating
costs. Methane-fueled microturbine co-generation provides such an opportunity at Essex
Junction.
The Village of Essex Junction is in northwestern Vermont with a land area of 4.6
square miles and a population of approximately 8,700 people. It is located approximately 10
miles from Burlington, Vermont, which is the State's largest city with 38,000 people. Both
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Essex Junction and Burlington are in Vermont's most populous county, Chittenden County,
which is home to approximately 100,000 residents. The total population of Vermont is
roughly 620,000. Given the small size and rural nature of the state, it is difficult for
individual municipalities to cover the cost of large projects with high initial capital costs and
maintain user rate stability (even when projects achieve long-term operating cost reductions).
Efficiency Vermont, the nation's first energy efficiency utility, was created by the
Vermont legislature and the Vermont Public Service Board in 1999 to help all Vermonters
save energy, reduce energy costs, and protect Vermont's environment. Efficiency Vermont is
operated by Vermont Energy Investment Corporation, an independent, non-profit organization
under contract to the Vermont Public Service Board. Efficiency Vermont administers
virtually all system-wide, electric-ratepayer funded energy efficiency at a statewide level.
The Efficiency Vermont contract is a multi-year, competitively bid, performance-based
contract that includes a great deal of freedom and flexibility to achieve clearly specified,
quantitative energy savings. While commercial and industrial customers have access to
prescriptive incentives for simple efficiency measures1, the large majority of electric energy
savings are achieved through custom projects and services. Typical services that may be
provided by Efficiency Vermont include project-specific technical assistance (e.g., electric
and cost savings analyses, economic analyses, technical recommendations, etc.), education
and training, and financial incentives.
Anaerobic Digestion and Methane
Methane is produced as a by-product of a process known as anaerobic (i.e., without
oxygen) digestion, which decomposes organic material. At wastewater plants, anaerobic
digestion is used to stabilize wastewater sludge, reduce sludge volume, and eliminate
pathogens. Volume reduction of sludge results in smaller disposal quantities and lower
disposal costs. The methane generated from anaerobic digestion at wastewater facilities is
typically considered a "waste." In fact, methane gas can be a troublesome waste since it is
also a "greenhouse gas" that contributes to global warming. Most wastewater plants with
anaerobic digestion are required to collect the resulting methane gas and burn it (usually with
a flare), rather than letting it discharge directly to the atmosphere, in order to control and
reduce the emission of greenhouse gases2. Many do burn a portion for heating the digester.
Based on information collected by the US EPA in its Clean Watersheds Needs Survey
in 2000, there are approximately 16,000 public wastewater facilities in the U.S., referred to as
publicly owned treatment works (POTWs). Anaerobic digestion is a process that is used at
roughly 20% of these POTWs (EPA 2003a). Many of these facilities use their waste methane
gas as a fuel to provide process heat for the anaerobic digesters, which are typically
maintained at 95 degrees Fahrenheit; the rest is often flared. Few use the methane to generate
electricity on-site. In fact, the possibility of using methane gas to produce electricity is
mentioned only briefly in the Water Environment Federation (WEF) 2003 edition of
1 Prescriptive incentives are currently available to Vermont businesses from Efficiency Vermont for some
lighting products, LED traffic signals, vending machine controllers, energy star transformers, some refrigeration
equipment, premium efficient motors, and "tier 2" air conditioning units.
2 The by-products of methane combustion are carbon dioxide and water. Although carbon dioxide is also a
greenhouse gas, it is 20 times less effective at trapping heat than methane.
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Wastewater Treatment Plant Design, and then indicated only for "larger treatment plants."
(Vesilind et al. 2003, 15-1)
Methane is a renewable energy source, specifically, a biofuel. As a fuel, methane
contains approximately half the energy content of natural gas on a per unit basis. That is, a
cubic foot of waste methane gas typically has 500-600 British Thermal Units (Btu), whereas a
cubic foot of natural gas contains 1,000-1,100 Btu.
Essex Junction Wastewater Facility Background
The Village of Essex Junction upgraded its Wastewater Treatment Facility (WWTF)
in 1985 to a secondary conventional activated sludge plant with advanced treatment using
mesophilic anaerobic digestion. The Village constructed its new plant to serve a "tri-town"
area in Vermont that includes the Village of Essex Junction, the Town of Essex, and the Town
of Williston. The WWTF has a design flow of 3.3 million gallons per day (MGD) and an
average flow of 2.0 MGD. Although a plant of this size is considered small by national
standards, the Essex Junction WWTF is one of the ten largest municipal wastewater plants in
the state of Vermont.
As a municipal wastewater facility, the Essex Junction WWTF is challenged to meet
its budget needs without increasing sewer rates. Building budget capacity when much of the
WWTF's annual operating budget consists of fixed costs that escalate with inflation is a
difficult objective, but one that the WWTF pursues vigorously. Of the WWTF's $750,000
annual operating budget, 90.5% is made up of only five categories.
Figure 1: Major Budget Categories for WWTF annual operating budget
Staffing /Overhead -
4 FTEs (37%)
Sludge Management
(23%)
Chemicals (13%)
Electricity (12.5%)
Maintenance (5%)
Balance
Sludge Mgmt.
Maintenance
Overhead
Bectric
Chemicals
Electric power demand for the WWTF is typically between 120-240kW. Prior to co-
generation, electric usage was approximately 1,100,000 kWh each year, representing
approximately $100,000 in annual electric utility costs. As with most municipalities, the
WWTF is the most energy intensive facility it owns and operates.
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The Essex Junction WWTF seeks continuous improvement in all aspects of its
business. In 1985, the plant was upgraded to remove phosphorus to 0.8 mg/L and provide
seasonal nitrification. A 1998 upgrade was to provide for flow equalization and reduce peak
hydraulic demand on the affected treatment operations. This project was a funding priority to
protect the water quality of Lake Champlain. Current work is focused on meeting new federal
and state regulations regarding storm water collection and management. In addition to
required process upgrades over the years, WWTF personnel were seeking energy
conservation and efficiency projects to build budget capacity through reduced operating costs.
As with most wastewater facilities, there are constant competing priorities for time and
financial resources. By 2000, the WWTF was able to complete most of the energy efficiency
recommendations made to the facility in a 1993 report, even while improving operations and
treatment at the plant. Some examples of efficiency projects include
o T8 lighting upgrades
o Hot water management
o Load shifting
o Load shedding
o Aeration blower variable frequency drive (VFD)
o 3 Phase power conversion (VFD conversion from single phase to three phase
power at point of application).
Now the challenge became - how to achieve more cost savings beyond standard efficiency
measures?
Making the Case for Co-Generation
Essex Junction WWTF personnel had been considering implementing a combined heat
and power (CHP) system since 1992. Given the high initial capital cost, it simply wasn't
deemed cost-effective for the Village to pursue CHP at that time. The sewer facility
governing board has a requirement that any energy-saving/cost-saving proposal have a simple
payback of no more than 7 years in order to proceed. Moreover, since the project would be
expending taxpayer dollars, municipal decision makers had to feel confident that the project
would deliver the estimated savings. On the whole, municipalities tend to be highly risk-
averse when making project and budget decisions, as they have to defend their decisions to
entire communities.
The Essex Junction WWTF used the waste methane gas to fire a boiler that provided
process heat to the anaerobic digesters and flared any remaining methane. On an annual
basis, only about 50% of the methane gas produced was utilized. Could the facility increase
its overall efficiency by using more of its methane to generate power and heat, rather than
flaring it as a waste? In order to estimate a payback period for the project, the Village of
Essex Junction needed to know how much electricity generation they could achieve, given the
facility's treatment flow, amount of methane produced, and need for digester process heat.
When methane is used as fuel for a CHP project, an important consideration is whether the
process heat available after combusting the methane will be sufficient to maintain digester
temperatures. Given Vermont's cold climate, special attention had to be paid to the lower
methane production rates in winter, coupled with the greater need for process heat in the
winter.
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The WWTF hired an engineer to perform initial design work, cost estimates, and
feasibility analyses. One of the first questions to consider was what type of electric generator
to use: engine, microturbine, fuel cell, etc. While engines were considered, the microturbine
was a preferred alternative since municipal personnel wanted to be sure that emissions from
any new system would be at least as "clean" as existed before installation of the system. The
basic plan for the system was to combust collected methane in a microturbine to generate
electricity. The waste heat from the combustion would then be used to provide process heat
to the anaerobic digesters. The 18-year old dual-fuel boiler currently used for process heat
would be kept as a backup heating source. Figure 2 shows the system process.
Figure 2: Essex Junction methane-fueled cogeneration preliminary
design process diagram
Wastewater Plant
Anaerobic Digester
(Methane
Produced)
Methane
Cool
Sludge
Warm
Sludge
Heat Exchanger
(liquid-to-liquid)
existing
Hot
Water
Existing Boiler
(for backup heat via
direct flare of methane)
Existing
Cool
Water
Hot
Water
Heat Exchanger
(Air-to-liquid)
Exhaust
Gas
(~522°F)
Microturbine
(Combustion
of Methane)
Exhaust
Gas
(~135°F)
Electricity
During initial investigations, it became clear that methane-fueled cogeneration at a
facility the size of Essex Junction was not typical. In fact, no such system existed in New
England. The closest, similar facility was in Lewiston, NY. During conversations with
Lewiston plant personnel, and a site visit to the Lewiston facility, a variety of "lessons
learned" were discussed and incorporated into initial design work. In particular, the issue of
siloxanes was raised. Siloxanes are silica-based compounds, typically found in shampoo, that
can glassify when subjected to high temperatures. Classified materials can reduce the
effectiveness of heat exchangers, and can create imbalance in microturbines, potentially
causing failure. It was determined that a siloxane removal strategy would need to be part of
any cogeneration system. As knowledge grew regarding all the required elements for a
successful cogeneration project, the estimated initial capital cost grew. In order to meet the 7-
year payback requirement from the sewer board, it became critical to identify additional
funding sources and leverage outside resources. The local electric utility was supportive of the
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project since reduced demand from the WWTF would assist in a transmission and distribution
(T&D) constrained area. Unfortunately, there was no funding available from them.
Efficiency Vermont was able to commit funding to the project, and help with economic and
savings analyses. Efficiency Vermont also helped to "spread the word" about the project,
soliciting additional support for it. Ultimately, a project team was put together with 5
different funding sources; a creative solution that made this project a reality.
Project Design, Contractor Selection, and Construction
Preliminary design work was performed by a local engineer. The focus of the effort was
to determine if implementation of CHP would be cost-effective for the WWTF, given the
existing electric rate structure, capital costs, and the required maximum payback period. The
initial basis of design included the following components:
o Two-30 kW micro-turbines
o Continuous generation for 1 microturbine
o Additional peak shaving for 2nd microturbine
o Natural gas and methane blending option
o 3 Phase 480 volt generation
o Operate parallel to the utility, reduce purchased electricity
o UL 1741 protection for voltage & Grid
Although the municipality had completed initial design work, the RFP was structured
to allow for alternate designs. It included a large amount of information for potential bidders
in order to solicit the best possible performanceand allowed a bidder to propose a system
based on the preliminary design, or to propose an alternate design. The RFP was written such
that the selected contractor would enter into a performance-based, design/build contract. In
order to generate quality system designs, the following facility background information was
provided in the RFP:
o The WWTF generates an average of 30,300 cu.ft./day of methane
o The facility's methane has a typical energy content of 520 btu/cu.ft.
Additional RFP content included system requirements and evaluation priorities.
o The system should emit no additional pollutants(i.e., SOx, NOx, methane)
compared to the current practice of flaring methane
o The system must remove siloxanes to protect equipment operation and life
(e.g., heat exchanger, microturbines)
o The electrical system interconnect must meet utility requirements and safety
protocols (e.g., no power feed onto grid during power outages)
o Generated power must be line-synchronized with grid-supplied power to
maintain power quality.
o The system must not exceed facility maximum allowed noise levels, based on
nearby residences and neighborhood park.
o The system must be highly reliable and require minimal maintenance that can
be performed by facility personnel at reasonable cost.
o The system must meet all relevant permit and other federal, state and local
requirements
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Bids came in more than $90,000 higher than expected (low bid cost of $275,000 v.
estimated cost of $184,000). The higher initial cost meant that the project did not meet the
sewer facility governing board 7-year payback requirement to move forward. Many projects
may have simply been abandoned at this point. The key difference in the Essex Junction
project is that project champions actively solicited additional financial support in order to
make the project a reality. Efficiency Vermont increased its incentive offer from $25,000 to
$40,000. Other key contributors also stepped forward. The Vermont-based Biomass Energy
Resource Center (BERC) committed $25,000 toward the project. Another Vermont-based
organization, NativeEnergy offered $10,000 toward the carbon credits that would be created
from the project as a result of onsite generation and the reduction in demand for power plant
generation. The Department of Energy, Region 1 provided $5,000 toward the project to
assure data collection and dissemination, so that other facilities could benefit from the
knowledge gained from the Essex Junction experience. And negotiations with the low bidder,
Vermont-based company Northern Power Systems, provided important technical insight to
optimize system performance while containing costs. Without the financial support and
personal dedication of all of these organizations, and especially the commitment of Essex
Junction personnel, the WWTF's methane-fueled cogeneration system would not have
materialized.
The final, installed system is based on a design/build approach with performance
standards and includes the following characteristics.
o 480 Volt - 3 Phase Power
o 3% Maximum Voltage Distortion
o 5% Maximum Harmonics Distortion, and compliance with IEEE 519-1992
o Full compliance with IEEE interconnect standards
o Dual-fuel microturbines (with natural gas/methane blending capability)
Start-Up and Ongoing Operations
Project start up included several activities prior to "going live" with the system. The
local electric utility was subcontracted to perform the electrical installation. This ensured that
all utility requirements were met during the installation. An area of some difficulty was
enabling a smooth transition from methane-fueled cogeneration to natural gas-fueled
cogeneration and back again. Although a dual fuel microturbine was specified, the actual
control and sequencing of switching from one fuel source to another was not a trivial matter.
Contractor personnel ultimately developed a successful proprietary protocol that provided
methane/natural gas blending during transitions from one fuel to the other without fuel fault to
the generators. Another activity included the need to update the supervisory control and data
acquisition (SCADA) system with new screen views and monitoring/control capabilities.
Computer programming was necessary to integrate the monitor and control functions with the
actual equipment. Recent condensation and cooling work has built on initial system, pre-
compression moisture removal capabilities.
Preliminary design work estimated that the level of methane generated at the WWTF
would be sufficient to operate two 30kW microturbines an average of approximately 40 total
hours each day. Since installation of the system in October 2003, there has been sufficient
methane generation to run the two microturbines 48 total hours each day. One reason for
consistently high methane production is that, prior to the cogeneration installation, the WWTF
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had its two anaerobic digesters cleaned to ensure proper process heating and to maximize
methane gas generation. These extra 8 hours of run time each day represent more than 80,000
kWh of electricity each year. And now that methane is a valuable energy resource for the
WWTF, it is monitored and managed more carefully than when it was simply a waste by-
product. In addition, the WWTF has also now installed two utility-grade sub-meters to more
definitively document the net power generation and net purchased power.
Results
To date, all aspects of the cogeneration system have operated as well or better than
anticipated, with the exception of the methane compressors (These are the compressors that
raise the 0.5 pounds per square inch (psi) methane to 100 psi prior to drying and combustion
in the microturbines.). Over the first year of operation, the system achieved 90% reliability.
While actual maintenance costs for the siloxane removal system (filter media, etc.) are lower
than anticipated, the compressor maintenance cost is presently anticipated to be higher. The
presence of moisture in the compressors has been the single largest reason for equipment
downtime and failure to date. An effective strategy for moisture removal from methane and
keeping moisture out of the methane compressors is key to successful system operation and
maximizing system run time. When a compressor is not working, the down time has a direct
impact on the daily electrical generation and subsequent facility cost savings. Table 1
provides information on the power demand from the electric utility after startup of the 60kW
of microturbines. One item of interest is that the facility power factor decreased since
installation of the microturbines. Facility personnel are working to pinpoint the cause and
ensure that plant-wide power factors remain above 90% to avoid power factor penalty fees
from the electric utility. Table 2 compares pre-installation cost estimates and post-installation
actual costs.
Table 1: Facility Power Information Before and After System Installation
On Peak Demand
Off Peak Demand
Monthly Avg. Usage
Power Factor
Before
(Oct 2002 -Sept
2003)
134-235 kW
13 0-226 kW
93,000 kWh
96
After
Oct 2003-Sept 2004)
1 10-215 kW3
94-226 kW4
61,OOOkWh
87
3 Oct 2003 value is 215 kW. With out start up month 203 kW is maximum
4 Oct 2003 value is 226 kW. With out start up month 190 kW is maximum
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Table 2: Estimated and Actual Project Payback Analysis
System capital cost
Incentives and grants
Net customer cost
Electric generation
Electric cost savings
Maintenance costs
Net annual savings
Payback without
incentives
Payback with
incentives
Pre-Construction (estimates)
$184,000
$25,000
$159,000
396,000 kWh/yr
$26,600/yr5
$3,700/yr
$22,900
8.0 yrs
6.9 yrs
Post-Construction (actuals)
$303,000
$80,000
$223,000
412,000 kWh/yr
$37,000/yr6
$4,000/yr
$33,000
9.2 yrs
6. 8 yrs
Figure 3 illustrates the amount of on-site electrical generation compared to purchased
electricity at the WWTF.
Figure 3: Electric usage at the Essex Junction WWTF
Essex Junction, VT Methane CHP (monthly data)
140000
120000
100000
80000
60000
40000
20000
utility meter
--turbine est.
-A- turbine metered
~*i~ plant total
\ \
month
5 Demand rate savings were not included in original estimates to be conservative
6 Actual blended rate of electricity Oct 2003-Sept 2004 $0.09/kWh
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Recommendations to Other Facilities
For those facilities that may be interested in implementing a CHP project, there are
several things to keep in mind while designing and installing a system. The first step is to talk
with others who are involved in CHP operations. Their experiences and lessons learned can
prove vital for project success. They can also provide input on whether you should pursue a
performance-based, design/build project, or cost plus materials for installation of an
engineered system. For those who use a design/build request for proposals (RFP) based on
performance requirements, it is important to specify the outcomes you require and provide
potential bidders data to use for design purposes. For instance, the chemical composition of
the methane gas should be analyzed, including Btu content, chemical content, and moisture
content, and this information should be provided with the RFP. Assumptions should be stated
regarding methane production rates, weather/temperature conditions, indoor v. outdoor siting
(and/or maximum noise levels), historical electric kWh and kW quantities, electric rate
structure, interconnect requirements, permit requirements, and power quality requirements.
When evaluating bid proposals, include a knowledgeable engineer on the review team to
assist in "fatal flaw analysis," so that significant issues or omissions can be caught as early as
possible. The RFP should also require that the following items are clearly identified for
proposed systems.
o Process for siloxane removal from methane
o Process for moisture removal from methane
o Life expectancy of compressors and microturbines
o Warrantees and service obligations/protocols
o Dual-fuel capability (methane and natural gas), including blending options
o Total kWh generated, parasitic loads, net kWh generation
o Sequencing strategy (e.g., base load constant operation, peak shaving, etc.)
o Equipment efficiency and total system efficiency
o Anticipated maintenance and related costs
o Emissions/ air quality
o Material costs associated with backup (i.e., spare) equipment to be kept on
hand (e.g., extra compressor)
Beyond technical considerations, probably the most important requirement is to have
project "champions" that will advocate for the project throughout the many obstacles that are
sure to arise. The Essex Junction project had many! Without champions who are committed
to overcome implementation barriers, many projects that are cost-effective will not secure
funding, community support, and decision-maker approval.
Conclusions
The Essex Junction WWTF's methane-fueled microturbine CFIP installation was
presented with a 2003 Vermont Governor's Award for Environmental Excellence and
Pollution Prevention. These awards are given for projects that reduce or eliminate the
generation of pollutants and wastes at the source. Selection criteria include benefits to the
environment, use of innovative approaches, economic efficiency, and the ability of an activity
to serve as a model for other efforts. Awardees were recognized as having "chosen to see the
world of possibilities and achieved excellence in pursuit of a preferred future."
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The project is noteworthy and successful for numerous reasons.
o The facility now uses nearly 100% of a former "waste" as fuel. This waste
was only about 50% utilized before.
o The Essex Junction community is now using a renewable energy source to
reduce costs and prevent pollution.
o A small municipality has been able to implement innovative microturbine
technology while maintaining community confidence and rate stability.
o Implementation of distributed generation reduces power demand and helps
ensure power availability in a local electric utility T&D constrained area.
o The facility, and its ratepayers, are saving 40% off their electric bills each year.
o Many other wastewater facilities can install similar systems and achieve
similar results.
Of the 16,000 POTWs in the country, approximately 20% of these facilities use anaerobic
digestion, and roughly 1,100 use anaerobic digestion and have average flows of 2 MGD or
more. In addition to POTWs, there are also industrial and private wastewater facilities for
which CHP would be applicable and cost-effective. By recognizing that methane-fueled
microturbines can be cost-effective at small wastewater plants, and not just larger facilities, an
entire new segment of the wastewater market is now open to distributed generation
opportunities. For efficiency organizations, and other potential funding sources, this is what
you can do to facilitate implementation of wastewater CHP projects. Show that it's been done
before to reduce the perception of taxpayer risk. Understand the economic requirements of
your customer (e.g., payback requirements, ROI requirements, etc.). Provide funding when
possible. Help the facility find other funding sources. Spread the news to generate support
and excitement for the project. Let others know about your experience. The technology
continues to improve, the costs continue to come down, and methane can mean money for
wastewater facilities.
References
[EPA] U.S. Environmental Protection Agency, 2003a. Clean Watersheds Needs Survey
(CWNS) 2000 Process Report. Available online:
http ://cfpub. epa. gov/cwns/process. cfm
[EPA] U.S. Environmental Protection Agency, 2003b. Clean Watersheds Needs Survey
(CWNS) Report to Congress. Available online:
http://www.epa.gov/owm/mtb/cwns/2000rtc/toc.htm
Vesilind, P. A. et. al., ed. 2003. Wastewater Treatment Plant Design, Alexandria, Virg.: Water
Environment Federation.
Bishop, J. 2004. "Digester Gas Unpopular as Power Fuel" Water Environment & Technology.
July.
Allentown, City of. 2001. City of Allentown, Pennsylvania web site. Available online:
www. allentownwater. org
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Water and Wastewater Newsletter, Oct.8, 2001, TXU Energy Services, Available online:
http://www.waterandwastewater.com/www services/newsletter/october 8 2001.htm
GHR Consulting Services Inc., 1993. Energy Analysis Study, Essex Junction Waste Water
Treatment Plant, May.
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SESSION 2: Appendices Continued
Appendix B
Energy Baseline Data Tables
Data Element
Data Source
Data Need Units Desired Frequency of Data Source Accessibility
Data
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SESSION 2: Appendices Continued
Appendix C
Equipment Inventory Worksheets
Process or Equipment
Nameplate HP or
Measured kW
Load Factor
Hours of Operation Per
Year
kWh/Year
Pump Designation Installed Nameplate Rating Hours of Operation Measured Power kWh/Year
Per Year Consumption
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SESSION 2: Appendices Continued
Appendix D
Regulatory Requirements Table
Requirement Name:
Requirement
Relevant Agency
Is regulation up to date?
Are we in compliance according to agencies?
Could we improve our performance?
How does this affect the proposed energy conservation measures?
Do we expect to remain in compliance?
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SESSION 3: Appendices
Appendix E
List of Activities and Operations Table
Activity
Operation or Location
Type of Energy Used
Current Use and Costs
Activity 1
Activity 2
Activity 3
Activity 4
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SESSION 3: Appendices Continued
Appendix F
Energy savings information for typical water and wastewater equipment and systems, including motors, pumps,
aeration systems, lighting and HVAC
Motors
Motors represent a major capital investment, a recurring maintenance requirement, and a significant energy demand.
Proper selection and proper maintenance will help reduce energy costs and improve reliability.
Motors are often available in standard and high-efficiency models. The difference in efficiency is greater for smaller motors
than for larger ones,20 although even a 1-2% difference in efficiency can make a major difference in energy cost for a large
motor that is run continuously. The New England Interstate Water Pollution Control Commission recommends using
high-efficiency motors in all cases except for very small motors that are used frequently.21 The Commission also
recommends incorporating power factor correction into all designs.
The Hampton Roads Sanitation District implemented an extensive motor policy in 1996. Some of the most important
elements are as follows:22
Motors must meet or exceed the efficiency levels set by the Energy Policy Act of 1992;
Efficiency is determined by test standards set by IEEE Standard 112-1984;
Motors must be sized properly for load, with a service factor of 1.15;
The guidelines specify 13 parameters to be noted, including horsepower, voltage, full load amps, speed,
maximum starts per hour and more; and
When deciding to repair or replace an old motor, the District will purchase a new energy-efficient motor if the
simple payback period is 5 years or less, or if the cost of repair is more than 50% of the cost of a new energy-
efficient motor.
Proper maintenance can extend a motor's lifetime and improve its energy efficiency. Motors should be operated as close
to nameplate voltage as practical; any deviation in voltage will impair efficiency. Connections and switches on all major
power-driven equipment should be checked at least once per year.23 The major cause of motor failure is neglected
maintenance of either mechanical or electrical components.
Pumps
Although aeration is typically the largest single energy demand in a WWTP, influent pumping can also be a significant
demand, depending on site elevation and sewer elevation. Pumps operate nearly all the time and are often over-designed.
Variable-frequency drives can improve pump efficiency.24
Ideally, a pump would always operate at or near its Best Efficiency Point, although varying system requirements may
make this impractical at times. Proper maintenance will keep a pump at or near its original design efficiency rating.
Friction losses caused by piping components (such as valves) can increase the energy required for pumping and have a
significant impact on energy costs.25
20- Water Environment Federation (1997), Energy Conservation in Wastewater Treatment Facilities, Manual of Practice No. MFD-2, Alexandria, VA, 1997.
21- New England Interstate Water Pollution Control Commission (1998), Guides for the Design of Wastewater Treatment Works, Technical Report #16.
22- Water Environment Research Foundation (1999), Improving Wastewater Treatment Plant Operations Efficiency and Effectiveness, Project 97-CTS-l.
23- Water Environment Federation (1997), Energy Conservation in Wastewater Treatment Facilities, Manual of Practice No. MFD-2, Alexandria, VA, 1997.
24- Maine Department of Environmental Protection (2002), Bureau of Land & Water Quality, O&M Newsletter, February 2002.
25- J. Oliver and C. Putnam (1997), "Energy Efficiency: Learning How to Avoid Taking a Bath on Energy Costs," WATER/Engineering and Management, July 1997.
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SESSION 3: Appendices Continued
Appendix F Continued
Aeration Systems
Aeration is typically the largest single energy user in the treatment process,26 typically ranging from 45% to 75% of the
wastewater utility's total electricity consumption.27 Like pumps, aeration equipment operates nearly all of the time.28
Possible energy-saving measures may include any of the following:
Blowers
Variable and multiple staged single-speed blowers
Efficient, properly-sized blowers operating at or near best efficiency point
Using digester gas to fuel engine-driven blowers
Aeration System
Two-speed mechanical aerators where mechanical aeration is used
Fine bubble diffusers where diffusion aeration is used
In some cases, a combination of mechanical mixing and diffused aeration may be the most efficient
Controls
Continuous dissolved oxygen (DO) monitoring
Lowest DO concentration consistent with stable operation and treatment objectives
Automatically controlled variable air flow based on oxygen demand
The type of aeration impacts the energy demand. Energy Conservation in Wastewater Treatment Facilities, Manual of
Practice No. MFD-2 from the Water Environment Federation, includes a number of case studies on fine-pore diffusers. In
general, the system improves Oxygen Transfer Efficiency (OTE), and often shows a significant economic advantage. A few
examples are highlighted below:
Glastonbury, CT switched from coarse-bubble diffusers to fine-pore diffusers. OTE improved from 4-4.5%
to 6.5-7%. Blower energy savings resulted in a simple payback period of approximately 2 years, although
this calculation does not include increased cleaning cost.
Hartford, CT switched from a coarse-bubble spiral roll system to a fine-pore dome diffuser system, improving
OTE from 4.4% to 10%. Operating savings of $200,000 per year resulted in a simple payback period of less than
3 years.
Ridgewood, NJ switched from a coarse-bubble aeration system to a dome fine-pore aeration system, improving
OTE from 4.8% to 9.5%. The facility saw a 30% decrease in blower energy use (saving about 30 MWh per
month), but increased maintenance resulted in the simple payback period being approximately 10 to 11 years.
In some cases, increased cleaning and maintenance costs extended the time required for fine-pore diffusers to repay their
cost in energy savings; in other cases, cleaning costs had relatively little effect.
Control systems are particularly important. An accurate aeration control system can reduce plant energy consumption by
as much as 25%, for a system payback of less than three years.29 Such a system requires accurate mass flow meters. Control
systems can continuously and automatically adjust the air consumption to the optimal required amount, thereby reducing
the demand on blower motors.
26- New England Interstate Water Pollution Control Commission (1998), Guides for the Design of Wastewater Treatment Works, Technical Report #16.
27- EPRI Industrial Program (1993), "Energy-Efficient Aeration Systems for Wastewater Treatment," Environment & Energy Management, Vol. 1, No. 3; WEF's 1997 Manual of
Practice cites a very similar figure of 40-70% for activated-sludge WWTP facilities.
28- Maine Department of Environmental Protection (2002), Bureau of Land & Water Quality, O&M Newsletter, February 2002.
29- C. Hewitt (1996), "Programmable Aeration Control System Reduces Plant Energy Costs," WATER/Engineering and Management, May 1996.
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SESSION 3: Appendices Continued
Appendix F Continued
Lighting
Lighting is a major category of energy consumption for commercial buildings. It is not as significant for industrial facilities
- and a wastewater treatment plant is essentially an industrial facility - but it remains one of the energy costs most easily
addressed. Fluorescent bulb technology has continued to improve, offering higher-quality lighting at lower energy
demand than previous versions; if a facility has old fluorescent lights, newer versions can improve the work environment
and reduce energy costs. There exists a wealth of resources for information on energy-efficient lighting options, such as
ENERGY STAR'S Building Upgrade Manual.30
Lights that are on for most of the workday are the best candidates for replacement with new energy-efficient models. For
more intermittent loads, occupancy sensors may be a wise choice. These controls will switch off lights in unoccupied
rooms after a period of time, automatically turning them on again if a person enters the room. Suitable areas might include
warehouses, storage rooms, restrooms, small offices, lunch, copy, and utility rooms.31
Heating, Ventilation, and Air Conditioning
Heating, ventilation, and air conditioning (HVAC) are similar to lighting in that they are not as relatively important as
energy demand for WWTPs as they are for typical commercial facilities, they are still a significant energy demand that can
be managed effectively.
Because HVAC is such a major energy user for commercial facilities, there are many resources and many contractors able
to improve the energy efficiency of a building's HVAC system. Improving insulation, sealing leaks, properly sizing the
system, and selecting an energy-efficient system (such as a ground-source heat pump) can help reduce energy costs and
provide a good return on investment.
30- U.S. Environmental Protection Agency (2004), ENERGY STAR Building Upgrade Manual, online at http://www.energystar.gov/ia/business/BUM.pdf. The section on
lighting begins on page 48.
31- J. Null and J. Hoggard (1998), "Occupancy Sensors Can Lead to Savings," Engineered Systems, July 1998.
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SESSION 3: Appendices Continued
Appendix G
Case studies of wastewater utilities installing energy generation systems based on methane capture
Facility: Wastewater Treatment Facility, Town of Amherst, NY
Daily Volume: 25 million gallons
Improvements Made: energy efficiency, methane capture
Implemented: 2004
Annual Savings: $500,000; 7.5 million kWh
Description: This project was implemented by Siemens Building Services, an energy service company. Typically, an
energy service company (ESCO) contracts with a facility owner to install energy efficiency improvements. The ESCO's
costs and fees are paid from the energy savings. In this case, the New York State Energy Research and Development
Authority (NYSERDA) also contributed to the costs of the improvements. The facility's new system captures
approximately 77,000 cubic feet of methane per day. This gas is used to run a compressor for oxygenating the waste
stream. Other improvements included a heat recovery unit, an additional natural gas engine, a new control system, lighting
dimmer switches, and high-efficiency motors.
Source: NYSERDA press release: http://www.nyserda.org/Press Releases/PressRelease.asp?i=55&d=2004
Facility: Wastewater Treatment Facility, Essex Junction, VT
Daily Volume: 3.1 million gallons
Improvements Made: Methane capture, microturbine generators
Implemented: 2003
Annual Savings: $37,000; 412,000 kWh, or about 36% of purchased electricity
Description: The facility's anaerobic digester produces about 30,300 cubic feet of methane per day. Prior to 2003, the
facility captured approximately half of this and used it in a boiler to heat the digester. The remainder was flared. In 2003,
the facility installed two 30-kW microturbines in a combined heat and power system. The methane is now used to produce
power, and a heat recovery system channels waste heat from the electricity generation to warm the digester. The overall
efficiency of the system is about 80%.Methane-based cogeneration is normally not cost-effective for a facility of relatively
small size, like this one. However, with the assistance of state agencies, federal agencies, and non-governmental
organizations, the facility was able to bring the cost down to the point where it met its own requirement of a seven-year
simple payback period.
Source:Northeast CHP Application Center:
http://www.northeastchp.org/uploads/Essex%20Tunction%20Project%20Profile.pdf
Facility: Wastewater Treatment Facility, Nashua, NH
Daily Volume: 12.5 million gallons
Improvements Made: anaerobic digester, gas engine
Implemented: 2001
Annual Savings: $750,000
Description: The City of Nashua undertook a major project, adding a $9 to $10 million anaerobic digester to its wastewater
treatment facility. The system includes methane capture to fuel a 365-kW internal combustion engine generator. The
anaerobic digester reduces the sludge to a state where it can be used as compost. This lowers sludge disposal costs by over
$1 million per year. The process also lowers chemical costs, purchased electricity costs, and other expenses. Even after
accounting for the repayments to the state's revolving loan fund (one source of financing for this project) and the O&M
expenses on the digester, the net savings are $750,000 per year. Energy improvements were one part of the solution here.
The overall cost savings far exceeded the energy savings alone.
Sources: Presentation for APWA Congress & Exposition, September 15, 2004:
https://www.apwa.net/meetings/congress/2004/handouts/documents/1001.pdf. Also see Waukesha Power Connection,
Winter 2001, from www.dresser.com.
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SESSION 3: Appendices Continued
Appendix G Continued
Case studies of wastewater utilities installing energy generation systems based on methane capture
Facility: Gloversville-Johnstown Joint Wastewater Treatment Facilities, NY
Daily Volume: design capacity 13 million gallons
Improvements Recommended: Improvements to methane capture system and possible replacement of engine generators
Implemented: 2004-2006
Annual Savings: Potential savings: $175,000 for improvements to methane capture system; $21,000-166,000 for
improvements to or replacements of engine generators
Description: This facility already has an effective energy system in place. Methane is captured from an anaerobic digester
and used to power two 150-kW engine generators. NYSERDA made its recommendations in October 2004, and generation
has since increased from 1.3 million kWh to 1.8 million kWh. While the facility does not specify exactly which
improvements were made, the incremental annual savings of 500,000 kWh would be about $75,000 per year. Current total
energy generation represents 42% of the site's energy consumption, for overall annual savings of $273,000. The anaerobic
digester produces about 4.1 million cubic feet of biogas per month (biogas is a mixture of methane, CO2, and other gases).
Source: NYSERDA recommendations (October 2004) at
http://www.nyserda.org/programs/Technical Assistance/Success/Gloversville Johnstown WWTF.pdf, and facility's
annual report at http:/ /www.g-jwastewater.com/annual-report.html.
Facility: Metropolitan Syracuse Wastewater Treatment Plant, Onondaga County, NY
Daily Volume: 80 million gallons
Improvements Made: Process optimization, energy efficiency upgrades
Implemented: 2004-2005
Annual Savings: $207,500; 2.8 million kWh and 270 MMBTU of natural gas
Description: This is a very large wastewater facility. Improvements beginning in 2004 included retrofitting pumps,
changing some operational processes, maximizing waste gas usage, and installing new equipment. Best practices tools
developed by the U.S. Department of Energy were used to assess potential areas of improvement. A wide range of
operational changes were made in a systematic approach. A recently-installed biological aeration filtration system allowed
the facility to stop wastewater nitrification in the aeration tanks. This process change, combined with equipment upgrades,
allowed the facility to reduce the number of 100-horsepower blowers from 21 to 13. In all, the improvements cost
approximately $233,000, for a payback period of 13 months.
Source: National Renewable Energy Laboratory at: http://www.nrel.gov/docs/fy06osti/38076.pdf.
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SESSION 3: Appendices Continued
Appendix H: Example of an Energy Priority Ranking Table
Activity Operation or Location Type of Energy Used Current Use and Costs Criterion 1 Criterion 2 Criterion 3 Criterion 4 Criterion 5 Total Score
Activity 1
Activity 2
Activity 3
Activity 4
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SESSION 4: Appendices
Appendix I
Objective and Target Worksheet
Objective
Target
Timeframe
Performance Indicator Worksheet
Target
Performance Indicator
Data Source
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SESSION 5: Appendices
Appendix J
Energy Improvement Management Program Table
Timeline
Estimated Time
(Person Hours or FTEs)
Estimated Costs
(e.g., equipment)
Task:
Deliverable:
Task:
Deliverable:
Task:
Deliverable:
Task:
Deliverable:
Task:
Deliverable:
Task:
Deliverable:
Task:
Deliverable:
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SESSION 5: Appendices Continued
Appendix K
Examples of Operating Controls for Energy Operations
Opportunity for Energy Improvement
NOx Emissions
Associated Operations
CHP system
Examples of Operating Controls
Note values from Continuous Emissions
Monitor (CEM) on system
Compare measured rate to power output on
system meter - should be less than 0.5
pounds per I
Methane Emissions
Anaerobic Digestion
Check valves and pipe fittings for leaks every
week
Compare measured generation from system
to estimated methane content of sludge -
should be 13,000 BTU per kWh
Track system generation as a function of
sludge volume
Electricity Consumption
Lighting
Ensure that automatic lighting control system
is working as designed - note any manual
overrides
Turn off task lighting when not in use
Electricity Consumption
HVAC
Replace filters every 3 months
Calibrate system every 3 months - measure
outlet temperature and compare to system
settings
Clean area around air intakes every 6
months
Clean evaporator and condenser coils every
6 months
Note any manual overrides to settings - try to
minimize if possible
Electricity Consumption
Computers
Activate power-saving features on all
computers; screensavers to activate after 5
minutes, screen to standby after 10 minutes,
hard disks to standby after 2 hours
Communicate that employees are to shut
down computers when leaving
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SESSION 6: Appendices
Appendix L
Table to document what you are currently measuring and from where you obtained this data
Data Element
Data Source
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SESSION 6: Appendices Continued
Appendix M
List of the operational controls, key characteristics, monitoring and measurement methods, and
calibration needs for the priority energy opportunities
Energy-Related Energy-Related Operational Key Characteristics Monitoring and
Operation Impacts Controls of Operation or Measurement
Activity Methods
Equipment and
System Calibration
Needs
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SESSION 6: Appendices Continued
Appendix N
Energy Improvement Management Programs Progress Review Worksheet
Objective
Target date
Status at (6 months)
Tasks Identified
Tasks Accomplished
Observations
Corrective Actions Needed
Next Steps
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SESSION 7: Appendices
Appendix O
Utility Case Study: Camden County Municipal Utility Authority (CCMUA)
The Camden County Municipal Utilities Authority (CCMUA) operates an 80 million gallon per day (MGD) secondary, pure
oxygen activated sludge wastewater treatment plant in Camden, NJ. It also operates a regional interceptor system with 100
miles of sewer, ranging in size from 24 inches in diameter to 96 inches, 25 pumping stations, ranging in size from 1 MGD
to 54 MGD, and 16 metering stations.
In 1999, the CCMUA implemented an Environmental Management System (EMS) in order to optimize its environmental
performance and minimize its costs. The results were excellent. As part of its Management System, the CCMUA sought
to reduce energy consumption and, correspondingly, energy costs, using the systematic, continuous improvement process
inherent to an EMS. Specifically, the CCMUA looked at every function/process that used a significant amount of energy
and attempted to implement projects that would reduce energy consumption and energy costs. The following is a list of
some of the most important energy reduction projects undertaken, to date:
1) Elimination of Infiltration/Inflow: Infiltration/Inflow (I/I), the leaking of groundwater and rainfall into a sewer
collection system, results in unnecessary increases in pumping and treatment costs. In addition, water is wasted. Simply
put, when one gallon of sewage is mixed with one gallon of clean groundwater through infiltration, two gallons of sewage
must now be pumped and treated. Eliminating I/1 through repair of leaky lines, especially those in the vicinity of high
groundwater tables, grouting of leaky manholes, implementation of watertight manhole covers, can significantly reduce
I/I and thereby reduce energy costs. (It also reduces the potential for flooding and overflows, which have their own
economic and social costs).
The CCMUA's strategy was to meter member municipalities for both dry weather and wet weather flow. When significant
differences were noted, the municipality was charged with the responsibility to undertake a trackback analysis to identify
the major sources of I/I within their system and to take steps, via a best management practices approach, to reduce I/I
correspondingly.
2) Elimination of Pump Stations via Direct Connections: In a system like the CCMUA's, where smaller municipal collection
systems connect into a larger regional interceptor system that then conveys the total flow to a regional treatment plant, there
were several opportunities to eliminate municipal pumping stations and connect them directly into the regional sewer
system. The CCMUA was able to eliminate over 20 pumping stations that were pumping right past its regional sewer
system to the main collection point for the municipality and then that same flow would be pumped right back to the same
point. By allowing the municipal pump station to tie into the regional system right there, the station could be eliminated,
as was the double pumping, thereby resulting in reduced energy costs, and reduced operations and maintenance costs for
the municipality.
3) Optimization of Primary Sedimentation Tanks: The main driving force for a primary sedimentation tank is the force of
gravity, as the solids/sediment settle to the bottom of the tank where they are collected as primary sludge. Conversely,
the secondary system is much more energy intensive, especially pure oxygen activated sludge plants like the CCMUA's,
Philadelphia's, and many other large cities where space is at a premium. Therefore, since the CCMUA' goal is to maximize
solids removal prior to discharge to the receiving water body, it optimized the operations and maintenance of its primary
sedimentation tanks in order to maximize the percentage of solids removed via the primary sedimentation tanks using the
free force of gravity as the removal agent, rather than the costly, energy intensive secondary aeration process.
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SESSION 7: Appendices Continued
Appendix O Continued
Utility Case Study: Camden County Municipal Utility Authority (CCMUA)
4) Heating loops: The use of heating loops and heat exchangers is well known in water and wastewater treatment plants,
and other facilities as well, capturing excess heat from process units and reusing said heat downstream in other processes.
The CCMUA has just completed the design of a heating loop that will capture excess heat from large natural gas engines
and preserve it for use elsewhere in the plant.
5) Use of energy efficient equipment/lighting: There are many examples throughout many industries of more energy
efficient equipment and lighting. The CCMUA realized savings of about $100,000 per year when it switched light bulbs
throughout the plant to a more efficient brand. Also, checking energy usage on a regular basis can identify under-
performing equipment, such as pumps that may need new wear rings, or may be on the verge of failure.
6) Retrofitting of diesel vehicles to use ultra low sulfur fuel: The CCMUA obtained an EPA grant to retrofit its diesel
vehicles to use ultra low sulfur fuel. Although there was no operational cost savings realized through this project, the
CCMUA was able to reduce sulfur emissions from its diesel vehicles by over 95%, without any capital expenditure
whatsoever.
7) Use of catalytic converter to reduce NOx and CO emissions: Similarly, the CCMUA installed catalytic converters on both
of its large natural gas engines, thereby reducing NOx and CO emissions from those engines by over 90%. Since this
enabled the CCMUA to remain below the Title V threshold, the result was a significant net savings in operational and
permitting costs.
The Camden County (NJ) Municipal Utilities Authority used its EMS to implement several projects that reduced energy
consumption and, correspondingly, reduced its energy costs. In accordance with an EMS' systematic approach that strives
toward continual improvement, the CCMUA is continuing to look for additional opportunities to reduce its energy
consumption.
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