Stale and Local
Climate and Energy Program
LOCAL GOVERNMENT CLIMATE AND ENERGY STRATEGY GUIDES
Energy Efficiency in
Water and Wastewater
Facilities
A Guide to Developing and Implementing
Greenhouse Gas Reduction Programs
U.S. ENVIRONMENTAL PROTECTION AGENCY
2013
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EPA's Local Government Climate and Energy
Strategy Series
The Local Government Climate and Energy Strategy Series provides a comprehensive, straightforward overview of green-
house gas (GHG) emissions reduction strategies for local governments. Topics include energy efficiency, transportation,
community planning and design, solid waste and materials management, and renewable energy. City, county, territorial,
tribal, and regional government staff, and elected officials can use these guides to plan, implement, and evaluate their
climate change mitigation and energy projects.
Each guide provides an overview of project benefits, policy mechanisms, investments, key stakeholders, and other imple-
mentation considerations. Examples and case studies highlighting achievable results from programs implemented in
communities across the United States are incorporated throughout the guides.
While each guide stands on its own, the entire series contains many interrelated strategies that can be combined to create
comprehensive, cost-effective programs that generate multiple benefits. For example, efforts to improve energy efficiency
can be combined with transportation and community planning programs to reduce GHG emissions, decrease energy and
transportation costs, improve air quality and public health, and enhance quality of life.
LOCAL GOVERNMENT CLIMATE AND ENERGY STRATEGY SERIES
All documents are available at: www.epa.gov/statelocalclimate/resources/strategy-guides.html.
ENERGY EFFICIENCY
Energy Efficiency in Local Government Operations
1 Energy Efficiency in K-12 Schools
Energy Efficiency in Affordable Housing
1 Energy-Efficient Product Procurement
Combined Heat and Power
Energy Efficiency in Water and Wastewater Facilities
TRANSPORTATION
Transportation Control Measures
COMMUNITY PLANNING AND DESIGN
Smart Growth
SOLID WASTE AND MATERIALS MANAGEMENT
Resource Conservation and Recovery
RENEWABLE ENERGY
Green Power Procurement
On-Site Renewable Energy Generation
Landfill Gas Energy
Please note: All Web addresses in this document were working as of the time of publication, but links may break over time
as sites are reorganized and content is moved.
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CONTENTS
Executive Summary _v
1. Overview __1
2. Benefits of Improving Energy Efficiency in Water and Wastewater Facilities 3
3. Planning and Implementation Approaches __6
4. Key Participants 16
5. Foundations for Program Development 20
6. Strategies for Effective Program Implementation 21
Strategies for Developing an Energy Efficiency Program 22
Strategies for Engaging the Community _ 23
7. Investment and Financing Opportunities 24
Investment ._ 24
Financing __25
Financial Vehicles ._ 2 5
Funding Sources __26
8. Federal, State, and Other Program Resources 28
Federal Programs __28
State Programs 29
Other Programs 30
9. Case Studies 32
City of O'Fallon, Missouri 32
Program Initiation __32
Program Features __32
Program Results _. 33
Greater Lawrence Sanitary District, North Andover, Massachusetts 33
Program Initiation ._ 33
Program Features __34
Program Results _. 35
10. Additional Examples and Information Resources 36
11. References 45
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EXECUTIVE SUMMARY
Developing and Implementing
Energy Efficiency Programs
Saving energy through energy efficiency improve-
ments can cost less than generating, transmitting, and
distributing energy from power plants, and provides
multiple economic and environmental benefits. Energy
savings can reduce operating costs for local govern-
ments, freeing up resources for additional investments
in energy efficiency and other priorities. Energy
efficiency can also help reduce air pollution and GHG
emissions, improve energy security and independence,
and create jobs.
Local governments can promote energy efficiency
in their jurisdictions by improving the efficiency of
municipal facilities and operations and encouraging
energy efficiency improvements in their residential,
commercial, and industrial sectors. The energy
efficiency guides in this series describe the process
of developing and implementing strategies, using
real-world examples, for improving energy efficiency
in local government operations (see the guides on
local government operations, energy efficiency in
K-12 schools, energy-efficient product procure-
ment, and combined heat and power) as well as in
the community.
Energy Efficiency in Water and
Wastewater Facilities
This guide describes how water and wastewater
facilities can lead by example and achieve multiple
benefits by improving the energy efficiency of their
new, existing, and renovated buildings and their day-
to-day operations. It is designed to be used by facility
managers, energy and environment staff, local govern-
ment officials, and mayors and city councils.
Readers of the guide should come away with an under-
standing of options to improve the energy efficiency
of water and wastewater facilities. Readers should also
understand the steps and considerations involved in
developing and implementing these energy efficiency
improvements, as well as an awareness of expected
investment and funding opportunities.
RELATED GUIDES IN THIS SERIES
1 Energy Efficiency: Energy Efficiency in Local
Government Operations
Local governments can implement energy-saving
measures in existing local government facilities, new
and green buildings, and day-to-day operations. Efforts
to improve energy efficiency in water and wastewater
facilities can be combined with other energy-saving
measures to create a comprehensive municipal energy
efficiency strategy.
1 Community Planning and Design:
Smart Growth
Smart Growth involves encouraging development that
serves the economy, the community, and the environ-
ment. A community that adopts smart growth prin-
ciples may develop policies that optimize the siting of
water and wastewater treatment systems to reduce the
energy needed to pump water to and from members of
the community.
1 Energy Efficiency: Combined Heat and Power
Combined heat and power (CHP), also known as
cogeneration, refers to the simultaneous production
of electricity and thermal energy from a single fuel
source. Wastewater facilities can install anaerobic
digesters that generate methane, which can be burned
in a CHP system on site to heat and power the facility.
1 Renewable Energy: Landfill Gas Energy
Landfill gas energy technologies capture methane
from landfills to prevent it from being emitted to the
atmosphere, reducing landfill methane emissions by
60-90%. The process of landfill gas recovery and use is
similar to that of recovering methane from anaerobic
digesters, and could be applied to water and wastewater
treatment facilities situated near landfills.
1 Renewable Energy: On-Site Renewable
Energy Generation
Local governments can implement on-site renewable
energy generation by installing wind turbines, solar
panels, and other renewable energy generating tech-
nologies. Water and wastewater facilities with adequate
land or roof area could install on-site renewable energy
generators, complementing their efforts to reduce
GHG emissions through energy efficiency.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
EXECUTIVE SUMMARY
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The guide describes the benefits of energy efficiency in
water and wastewater facilities (Section 2); a step-by-
step approach to improving energy efficiency in new
and existing water and wastewater facilities (Section 3);
key participants and their roles (Section 4); the policy
mechanisms that facilities have used to support energy
efficiency programs in their operations (Section 5);
implementation strategies for effective programs
(Section 6); investment and financing opportunities
(Section 7); federal, state, and other programs that
may be able to help water and wastewater facilities
with information or financial and technical assistance
(Section 8); and finally two case studies of water or
wastewater facilities that have successfully improved
energy efficiency in their operations (Section 9).
Additional examples of successful implementation are
provided throughout the guide.
Relationships to Other Guides
in the Series
Local governments can use other guides in this series
to develop robust climate and energy programs that
incorporate complementary strategies. For example,
local governments can combine efforts to improve
energy efficiency in water and wastewater facilities
with energy efficiency in local government opera-
tions, smart growth strategies, combined heat and
power systems, landfill gas energy, and on-site renew-
able energy generation to help achieve additional
economic, environmental, and social benefits.
See the box on page v for more information about
these complementary strategies. Additional connec-
tions to related strategies are highlighted in the guide.
EXECUTIVE SUMMARY
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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Energy Efficiency
in Water and
Wastewater Facilities
1. OVERVIEW
Energy use can account for as much as 10 percent of a
local government's annual operating budget (U.S. DOE,
2005a). A significant amount of this municipal energy
use occurs at water and wastewater treatment facilities.
With pumps, motors, and other equipment operating
24 hours a day, seven days a week, water and waste-
water facilities can be among the largest consumers of
energy in a community—and thus among the largest
contributors to the community's total GHG emissions.
Nationally, the energy used by water and wastewater
utilities accounts for 35 percent of typical U.S. munic-
ipal energy budgets (NYSERDA, 2008). Electricity use
accounts for 25-40 percent of the operating budgets for
wastewater utilities and approximately 80 percent of
drinking water processing and distribution costs
(NYSERDA, 2008). Drinking water and wastewater
systems account for approximately 3-4 percent of
energy use in the United States, resulting in the emis-
sions of more than 45 million tons of GHGs annually
(U.S. EPA, 2012b).
WATER USE EFFICIENCY
Water and wastewater utilities can also reduce energy
use by promoting the efficient use of water, which
reduces the amount of energy needed to treat and
distribute water. In California, for example, urban water
use accounts for 70% of the electricity associated with
water supply and treatment (Elkind, 2011). Water use
efficiency can also help avoid the need to develop new
water supplies and infrastructure. This guide provides
some information on approaches to improve water use
efficiency (such as installing low-flow plumbing fixtures),
but concentrates primarily on direct energy efficiency
improvements in facilities.
More information on water use efficiency for water and
wastewater utilities is available from:
• EPA's Water Efficiency Strategies page: http://water.
epa.gov/infrastructure/sustain/wec_wp.cfm
• EPA's WaterSense site: http://epa.gov/watersense/
pubs/utilities.html
These economic and environmental costs can be
reduced by improving the energy efficiency of water
and wastewater facilities' equipment and operations,
by promoting the efficient use of water (see text box
on this page), and by capturing the energy in waste-
water to generate electricity and heat. Improvements
in energy efficiency allow the same work to be done
with less energy; improvements in water use efficiency
reduce demand for water, which in turn reduces the
amount of energy required to treat and distribute
water. Capturing the energy in wastewater by burning
biogas from anaerobic digesters in a combined heat
and power system allows wastewater facilities to
produce some or all of their own electricity and space
heating, turning them into "net zero" consumers
of energy.
Local governments can also reduce energy use at water
and wastewater facilities through measures such as
water conservation, water loss prevention, stormwater
reduction, and sewer system repairs to prevent ground-
water infiltration. Measures to reduce water consump-
tion, water loss, and wastewater lead to reductions
in energy use, and result in savings associated with
recovering and treating lower quantities of wastewater
and treating and delivering lower quantities of water.
This guide focuses primarily on strategies for
improving energy efficiency in water and wastewater
facilities. Opportunities for improving energy effi-
ciency in these facilities fall into three basic categories:
1) equipment upgrades, 2) operational modifications,
and 3) modifications to facility buildings. Equipment
upgrades focus on replacing items such as pumps
and blowers with more efficient models. Operational
modifications involve reducing the amount of energy
required to perform specific functions, such as waste-
water treatment. Operational modifications typically
result in greater savings than equipment upgrades, and
may not require capital investments (U.S. EPA, 2002).
Modifications to buildings, such as installing energy-
efficient lighting, windows, and heating and cooling
equipment, reduce the amount of energy consumed by
facility buildings themselves.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
1. OVERVIEW
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FIGURE 1. ENERGY INTENSITY OF EACH STAGE IN THE WATER USE CYCLE, WITH KEY
OPPORTUNITIES FOR ENERGY EFFICIENCY, RENEWABLE ENERGY, AND WATER EFFICIENCY.
Sources: California Energy Commission, 2005; U.S. EPA, 2010a; U.S. EPA, 2010b; Energy Center of Wisconsin, 2003
Treated Source
Water Treatment
100-16,000 kWh/MG
Water End Uses
Conveyance
0-14,000 kWh/MG
Distribution
700-1,200 kWh/MG
Energy Opportunities
• Use efficient pumping systems (pumps,
motors, variable frequency drives)
• Capture energy from water moving
downhill
• Store water ro avoid pumping
at times of peak energy cost
Treated
Wastewater
Energy Opportunities
• Install SCADA software
• Use efficient pumping systems (pumps,
motors, variable frequency drives)
• Install efficient disinfection equipment
• Implement lighting,
HVAC improvements
Energy Opportunities
• Use efficient pumping systems (pumps,
motors, variable frequency drives)
• Reduce distribution leaks
• Implement automatic meter reading
jjasX
aso^
Wastewater
Collection & Treatment
Energy Opportunities
• Use efficient pumping systems (pumps,
motors, variable frequency drives)
• Capture energy from water moving downhill
Treated Wastewater Discharge
Energy Opportunities
• Improve efficiency of aeration equipment
and anaerobic digestion
• Implement cogeneration and other onsite
renewable power options (e.g., solar panels,
wind turbines, low-head hydro)
• Implement lighting, HVAC improvements
• Fix leaks
• Install SCADA software
• Use efficient pumping systems (pumps,
motors, variable frequency drives)
• Recycle water
Notes:
• Energy intensity is given in kilowatt-hours (kWh) per million gallons (MG).
• The energy efficiency opportunities shown are examples, not an exhaustive list.
• The ranges in energy intensity shown here are for California, whose water and Wastewater sectors have higher energy intensities overall
than the rest of the United States. However, the energy intensity of most U.S. water and Wastewater utilities will likely fall within these
ranges (U.S. DOE, 2006).
• The ranges in energy intensity at each stage in the cycle are related to differences in factors such as the water source (deep aquifers being
the most energy-intensive to pump); the volume of water transported; the distances and topography between sources, treatment plants,
and end users; the quality of the source water; the intended end uses; and the technologies used to treat water and Wastewater.
• The energy use associated with transport of Wastewater from end users to Wastewater treatment facility is included under "Wastewater
Collection and Treatment."
• For EPA's latest guidelines on water reuse, please see http://www.waterreuseguidelines.org/.
1. OVERVIEW
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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Figure 1 shows typical ranges of energy use at each
stage of the water use cycle, along with key oppor-
tunities for improving energy efficiency, conserving
water, and using renewable energy. The processes of
pumping and treatment are the largest consumers of
energy in the water use cycle. In most cases, pumping
is the largest source of energy use before, during,
and after treatment of water. For wastewater, where
energy-intensive technologies such as mechanical
aerators, blowers, and diffusers are used to keep
solids suspended and to provide oxygen for biological
decomposition, treatment accounts for the largest
share of energy use (California Energy Commission,
2005). Facility managers can perform energy audits
or install monitoring devices that feed into their
Supervisory Control and Data Acquisition (SCADA)
system1 to learn where energy is being used in their
facility and identify opportunities for energy efficiency
improvements.
The most effective way for communities to improve
energy efficiency in their water and wastewater facili-
ties is to use a systematic, portfolio-wide approach
that considers all of the facilities within their jurisdic-
tion. This approach allows communities to prioritize
resources, benchmark and track performance across
all facilities, and establish cross-facility energy
management strategies. A portfolio-wide approach
not only results in larger total reductions in energy
costs and GHG emissions, but enables communities
to offset the upfront costs of more substantial energy
efficiency projects with the savings from other projects.
Adopting a portfolio-wide approach can also help local
governments generate greater momentum for energy
efficiency programs, which can lead to sustained
implementation and continued savings.
Before developing a portfolio-wide approach, local
governments first need to understand the steps
involved in identifying and implementing energy effi-
ciency improvements at individual facilities. This guide
is designed to help local governments understand how
to work with municipal or privately owned water and
wastewater utilities to identify energy efficiency oppor-
tunities. It provides information on how water and
wastewater utilities have planned and implemented
programs to improve energy efficiency in existing
facilities and operations, as well as in the siting and
design of new facilities (see the text box on page 5).
It also includes information on the benefits of energy
1 A SCADA system is a computer system used to monitor and control indus-
trial, infrastructure, or facility-based processes.
efficiency improvements in water and wastewater facil-
ities, expected investments and funding opportunities,
and case studies. Additional examples and informa-
tion resources are provided in Section 10, Additional
Examples and Information Resources.
Since this guide provides information and examples for
both the water and wastewater sectors, the icons below
are used to help readers quickly identify examples and
resources that focus specifically on one type of facility:
Water facilities
Wastewater facilities
2. BENEFITS OF IMPROVING
ENERGY EFFICIENCY IN
WATER AND WASTEWATER
FACILITIES
Improving energy efficiency in water and wastewater
facilities can produce a range of environmental,
economic, and other benefits, including:
1 Reduce air pollution and GHG emissions. Improving
energy efficiency in water and wastewater facilities can
help reduce GHG emissions and criteria air pollutants
by decreasing consumption of fossil fuel-based energy.
Fossil fuel combustion for electricity generation
accounts for approximately 40 percent of the nation's
emissions of carbon dioxide (CO2), a principal GHG.
It also accounts for 67 percent and 23 percent of the
nation's sulfur dioxide (SO2) and nitrogen oxide (NOJ
emissions, respectively. These pollutants can lead to
smog, acid rain, and airborne particulate matter that
can cause respiratory problems for many people (U.S.
EPA, 201 la; U.S. EPA, 201 lb).2
2 According to EPA, energy use in commercial and industrial facilities
accounts for nearly 50 percent of all U.S. GHG emissions (U.S. EPA, 201 la).
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
2. BENEFITS
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The Green Bay, Wisconsin Metropolitan
Sewerage District has two treatment
plants that together serve more than 217,000 resi-
dents. One of the treatment plants installed new
energy-efficient blowers in its first-stage aeration
system, reducing electricity consumption by
50 percent and saving 2,144,000 kWh/year—
enough energy to power 126 homes—and avoiding
nearly 1,480 metric tons of CO2 equivalent,3
roughly the amount emitted annually by 290 cars
(U.S. EPA, 2010a; U.S. EPA, 201 Id; U.S. EPA, 201 If).
CHP FOR WASTEWATER FACILITIES
Wastewater facilities with an anaerobic digester can use
biogas generated by the digester to produce heat, and in
many cases electricity as well. As a rule of thumb, each
million gallons per day of wastewater flow can generate
enough biogas in an anaerobic digester to produce 26
kilowatts of electric capacity and 2.4 million Btu per day
of thermal energy in a CHP system (U.S. EPA, 2011g).
Not all wastewater facilities use anaerobic digesters,
so CHP is not an option for all wastewater plants.
Furthermore, some facilities with anaerobic digesters
must rely on supplemental sources to provide enough
energy for electricity generation in their CHP system.
For more information on CHP in wastewater facilities,
see http://www.epa.gov/chp/documents/wwtf_
opportunities.pdf.
' Reduce energy costs. Local governments can achieve
significant cost savings by increasing the efficiency
of the pumps and aeration equipment at a water or
wastewater treatment plant. A 10 percent reduction
in the energy use of U.S. drinking water and waste-
water systems would collectively save approximately
$400 million and 5 billion kWh annually (U.S. EPA,
201 Ig). Facilities can also use other approaches to
reduce energy costs, such as shifting energy use away
from peak demand times to times when electricity is
cheaper or (for wastewater plants) using CHP systems
to generate their own electricity and heat from biogas.
3 Carbon dioxide equivalent is a measure used to compare the emissions
from different GHGs based on their respective global warming potential
(GWP). Carbon dioxide equivalents are commonly expressed as metric tons of
carbon dioxide equivalent (MTCOf). The carbon dioxide equivalent for a gas
is derived by multiplying the tons of the gas by the associated GWP. In other
words, MTCOf = (metric tons of a gas) * (GWP of the gas).
P->, With more than two-thirds of the
^-—> up-front installation and maintenance
costs covered by the State of Minnesota and a local
utility, the Albert Lea Waste Water Treatment
Plant in Albert Lea, Minnesota developed a
120-kW mictroturbine CHP system, which saves
the plant about $100,000 in annual energy costs.
About 70 percent of the savings resulted from
reduced electricity and fuel purchases, and the
remainder from reduced maintenance costs. The
installation of the CHP system raised awareness at
the plant about energy use in general, and led to a
number of other energy efficiency improvements
and additional cost savings (U.S. EPA, 201 If).
1 Support economic growth through job creation and
market development. Investing in energy efficiency
can stimulate the local economy and spur develop-
ment of energy efficiency service markets. The energy
efficiency services sector accounted for an estimated
830,000 jobs in 2010, and the number of jobs was
growing by 3 percent annually (ACEEE, 2012). Most
of these jobs are performed locally by workers from
relatively small local companies because they typically
involve installation or maintenance of equipment
(ACEEE, 2012; Lawrence Berkeley Laboratory, 2010).
Furthermore, facilities that reduce their energy costs
through efficiency upgrades can spend those savings
elsewhere, often contributing to the local economy
(Lawrence Berkeley Laboratory, 2010).
1 Demonstrate leadership. Investing in energy effi-
ciency epitomizes responsible government steward-
ship of tax dollars and sets an example for others to
follow. By implementing energy efficiency and water
efficiency projects at water and wastewater facilities,
a local government can demonstrate not only the
dollars saved, but the environmental co-benefits that
are obtained from reducing energy and water use.
Installing energy-efficient products (e.g., more efficient
pumps), water-efficient products (e.g., WaterSense
products), and renewable energy technologies (e.g.,
solar panels) may facilitate broader adoption of these
technologies and strategies by the private sector—
particularly when communities publicize the economic
and environmental benefits of their actions.
2. BENEFITS
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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—^-s In an initiative led by the city's current
i mayor when he was alderman, a group of
residents and city staff led an initiative in 2008 to
develop a plan to make the City of Franklin,
Tennessee, more environmentally sustainable. This
group created the city's 2009 Sustainability
Community Action Plan, which called for reduc-
tions in energy use and GHG emissions, and
directed Franklin's utilities to become more
involved in energy efficiency audits. As part of its
effort to meet the action plan's energy goals,
Franklin participated in the Tennessee Water and
Wastewater Utilities Partnership, co-sponsored by
EPA Region 4. The partnership helped Franklin's
water department identify and implement oppor-
tunities to reduce energy costs by more than
$194,000 per year—a 13 percent reduction-
through changes in operations and installing
energy-efficient lighting. The improvements have
avoided more than 1,280 metric tons of GHG
emissions, equivalent to the annual emissions from
powering 125 homes (City of Franklin, 2009,2012).
1 Improve energy and water security. Improving
energy efficiency at a water or wastewater treatment
facility reduces electricity demand, avoiding the risk of
brownouts or blackouts during high energy demand
periods and helping to avoid the need to build new
power plants. Water efficiency strategies reduce the
risk of water shortages, helping to ensure a reliable and
continuous water supply.
The East Bay Municipal Utility District
(EBMUD), which provides drinking
water to 1.3 million customers and handles waste-
water for 650,000 customers in the San Francisco
Bay Area, transformed itself from an energy
consumer to a net energy producer. By 2008 the
district had brought its GHG emissions back to
their 2000 level and then reduced them by an addi-
tional 24 percent the following year, all while insu-
lating itself from energy price fluctuations and
supply uncertainties (EBMUD, 2010). EMBUD
started its energy transformation by cutting its
energy use requirements to the point where its
facilities now use 82 percent less energy than the
California average for delivering 1 million gallons
of drinking water from source to tap. It accom-
plished these improvements through design
features, such as delivering drinking water via
downhill pipes rather than using electric pumps,
and through energy efficiency upgrades such as
installing microturbine CHP units. EBMUD's
remaining energy needs are met by renewable
energy systems, including hydropower, solar, and
biogas. Excess power produced by the renewables
provides a source of income through sales of elec-
tricity into the grid (EBMUD, 2012).
1 Extend the life of infrastructure/equipment. Energy-
efficient equipment often has a longer service life and
requires less maintenance than older, less efficient
technologies (U.S. EPA Region 9, 2012a). Efforts to
improve water efficiency or promote water conserva-
tion can also extend the life of existing infrastructure
due to lower demand, and can avoid the need for costly
future expansions.
SITING AND DESIGN CONSIDERATIONS FOR NEW
WATER AND WASTEWATER FACILITIES
While this guide focuses mainly on energy efficiency
improvements in existing facilities, energy use can also
play an important role in decisions about siting and
designing new water and wastewater facilities.
Distance and topography are important factors to
consider in siting: by reducing conveyance distances
where possible and using gravity rather than pumps,
water and wastewater utilities can reduce energy costs.
New facilities can also be designed from the ground
up to be more energy efficient and to use efficient
equipment.
Wastewater utilities may be able to achieve additional
savings by decentralizing new treatment facilities. Small,
local treatment facilities reduce the energy costs of
conveyance and make treated wastewater available
for local reuse. Decentralized wastewater facilities are
being implemented at the scales of individual buildings,
neighborhoods, and entire watersheds. For example, the
Solaire high-rise apartment building in New York City has
its own wastewater plant in the basement and collects
stormwater from its roof. The stormwater and treated
wastewater are used for cooling the building, flushing
toilets, and irrigation (Decentralized Water Resources
Collaborative, 2012).
For more information on decentralized wastewater
treatment, see www.decentralizedwater.org.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
2. BENEFITS
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1 Protect public health. Improvements in energy effi-
ciency at water and wastewater facilities can reduce air
and water pollution from the power plants that supply
electricity to those facilities, resulting in cleaner air
and human health benefits (U.S. EPA Region 9,2012b).
Equipment upgrades may also allow facilities to
increase their capacity for treating water or wastewater
or improve the performance of treatment processes,
reducing the potential impacts of sea level rise, treat-
ment failures, and risk of waterborne illness.
^>, Millbrae, California implemented a
*--—» program to divert inedible kitchen
grease from the city's wastewater system, where it
could clog sewer lines and cause releases of raw
sewage into the environment, posing risks to
public health. Waste haulers collect the grease
daily from area restaurants and deliver it to the
wastewater treatment facility, where it is processed
in digester tanks to create biogas. Before the
program was implemented, the grease ended up in
area landfills where its decomposition produced
methane emissions. The treatment plant's digester
system produces enough biogas to generate about
1.7 million kWh of electricity annually, meeting
roughly 80 percent of the plant's power needs
(Renewable Energy World, 2006).
3. PLANNING AND
IMPLEMENTATION
APPROACHES
This section describes a seven-step process that water
or wastewater facilities can follow to develop, imple-
ment, and sustain energy efficiency programs (see
Figure 2). This approach can help local water and
wastewater facilities achieve the range of benefits
described in Section 2, Benefits of Improving Energy
Efficiency in Water and Wastewater Facilities.
The steps in this process are consistent with the
Plan-Do-Check-Act management systems approach,
which is a circular evolving process that focuses on
continual improvement over time. This approach is
described in the ENERGY STAR* Guidelines for Energy
Management (U.S. EPA, 201 le). EPA's Office of Water
has expanded the plan-do-check-act approach to a
seven-step process. The steps are outlined in Ensuring a
Sustainable Future: An Energy Management Guidebook
for Water and Wastewater Utilities (U.S. EPA, 2008),
which serves as the primary source for the guidance
presented below. Several EPA Regions are currently
working with water and wastewater facilities to help
them implement energy management programs based
on the Ensuring a Sustainable Future guidebook's
approach. Similarly, local governments can work
with their water and wastewater facilities to apply
these steps.
EPA's Planning for Sustainability Handbook for Water
and Wastewater Utilities describes key steps for
integrating sustainability considerations, including
energy efficiency, into a utility's planning process.
The handbook is available at: http://water.epa.gov/
infrastructure/sustain/upload/EPA-s-Planning-for-
Sustainabitity-Handbook.pdf. EPA has also developed
tools that can help with the planning process, including
the Energy Management Self-Assessment Tool for
Water and Wastewater Utilities, available at: http://
www.epa.gov/region9/waterinfrastructure/howto.html.
MISSOURI WATER UTILITIES PARTNERSHIP
EPA Region 7, the Missouri Department of Natural
Resources, the Missouri University of Science and
Technology, and the Siemens Corporation partnered
together to create the Missouri Water Utilities Partnership
(MOWUP). Through a series of workshops, MOWUP has
helped eight communities to:
• track their energy use,
• prioritize energy-saving opportunities,
• identify funding options,
• develop communication networks,
• evaluate renewable energy options, and
• develop near- and long-term plans for energy
management.
One of the lessons learned from the initiative was the
importance of collaboration and learning from one
another. Each water utility is unique and faces different
challenges.
The communities are projected to reduce their electricity
use by more than 8 million kWh per year and avoid 5,500
metric tons of CO2 equivalent annually—roughly the same
amount emitted per year by 1,000 passenger cars.
More information about one of the communities involved
in the partnership can be found in Section 9, Case Studies.
Source: U.S. EPA, 2011c
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FIGURE 2. STEPS FOR DESIGNING, IMPLEMENTING, AND SUSTAINING ENERGY EFFICIENCY
IMPROVEMENTS IN WATER AND WASTEWATER FACILITIES
Act
Step 1. Get Ready
' Establish the facility's energy policy and overall
energy improvement goals
• Secure and maintain management commitment,
involvement and visibility
• Choose an energy "fenceline"
• Establish energy improvement program leadership
• Secure and maintain employee and management buy-in
Step 2. Assess Current Energy Baseline Status
• Establish a baseline and benchmark facilities
• Perform an energy audit
• Identify activities and operations that consume the most energy
or are inefficient
Step 3. Establish an Energy Vision and Priorities for Improvement
• Identify, evaluate, and prioritize potential energy improvement projects and activities
Step 4. Identify Energy Objectives and Targets
' Establish energy objectives and targets for priority improvement areas
• Define performance indicators
Plan
Check
Do
Step 5. Implement Energy Improvement Programs and Build a Management System to
Support Them
• Develop action plans to implement energy improvements
• Get top management's commitment and approval
• Develop management system "operating controls" to support energy improvements
• Begin implementation once approvals and systems are in place
Step 6. Monitor and Measure Results of the Energy Improvement Management Program
• Review what the facility currently monitors and measures to track energy use
• Determine what else the facility needs to monitor and measure its priority energy
improvement operations
Check • Develop a plan for maintaining the efficiency of energy equipment
• Review the facility's progress toward energy targets
• Take corrective action or make adjustment when the facility is not progressing toward its
energy goals
• Monitor/reassess compliance status
Step 7 Maintain the Energy Improvement Program
* Continually align energy goals with business/operation goals
Act ' Apply lessons learned
• Expand involvement of management and staff
• Communicate success
Based on U.S. EPA, 2008.
Plan
Step 1: Get Ready
Before a water/wastewater facility can implement an
energy management program and sustain it success-
fully over time, the facility must take the time to estab-
lish a strong foundation.
1 Establish the facility's energy policy and overall
energy improvement goals. An organization's energy
policy is a statement denning its intentions and prin-
ciples for energy management. Signed by top managers
and communicated to all employees, the energy policy
provides a framework for action and setting specific
energy improvement goals and milestones.
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3. PLANNING
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Determining goals for energy improvements in the
beginning is important for measuring success after
the project, and for ensuring that the project stays on
track. These goals can be quantitative (e.g., reduce
overall energy use by 25 percent in three years) or
qualitative (e.g., implement a community education
program, setting an example for other facilities).
Facilities may want to develop a mix of quantitative
and qualitative goals to cover a range of quantifiable
and non-quantifiable actions. Whenever possible, these
goals can be developed as part of the facility's ongoing
planning processes.
These goals can be ambitious but realistic. A facility
can review case studies and examples—such as
those provided in Section 10, Additional Examples
and Information Resources—to see what similar
facilities have been able to achieve throueh certain
energy improvements. Water and wastewater facili-
ties can often achieve a 20 to 30 percent reduction in
energy use through energy efficiency upgrades and
operational measures (U.S. EPA, 2010a). Setting goals
around or above achievements by past projects is
generally reasonable.
Along with establishing goals for energy efficiency
improvements, a facility may consider adding goals
to meet the energy requirements of any actions it
takes to adapt to the risks of future climate change.
EPA has developed an adaptive response framework
that can help facilities identify and adjust to the
potential impacts of climate change on water supplies
and wastewater treatment. See the text box below
on climate change adaptation and water utilities for
more information.
CLIMATE CHANGE ADAPTATION AND WATER UTILITIES
Climate change poses many challenges to water and wastewater utilities through impacts such as extreme weather events, sea
level rise, shifting precipitation and runoff patterns, and temperature changes. EPA's Climate Ready Water Utilities (CRWU) program
(http://water.epa.gov/infrastructure/watersecurity/climate/} provides resources to help the water sector adapt to a changing climate
by promoting a clear understanding of climate science and adaptation options.
CRWU has developed a climate ready adaptive response framework that water and wastewater
facilities can use to prepare for the impacts of climate change. The framework allows facilities
to maintain their readiness through an approach that recognizes the diversity of conditions
facing a facility and uncertainty regarding the nature, timing, and magnitude
of local climate impacts. The framework involves an iterative, continual,
and adaptive process, as illustrated below. Although mainly focused
on climate adaptation, mitigation of greenhouse gases and energy
management is a key aspect of the adaptive response framework.
Additional information on the adaptive response framework can be
found at: http://water.epa.gov/infrastructure/watersecurity/climate/
upload/epa817f!2009.pdf.
CRWU has also developed tools and other resources for water and
wastewater facilities, including:
Policies
Source: U.S. EPA 2012d
Mitigation
v^p -^— •—- \^^^
An online searchable database of freely available resources,
available at: http://www.epa.gov/safewater/watersecurity/
climate/toolbox.html.
The Climate Resilience Evaluation and Awareness Tool (CREAT), which
helps drinking water and wastewater facility owners and operators understand the
impacts of climate change, assess potential risks to their utilities, and evaluate adaptation
options. CREAT 2.0 contains energy management resources and allows a user to consider the
energy requirements for adaptation options, available at: http://water.epa.gov/infrastructure/watersecurity/climate/creat.cfm.
An Adaptation Strategies Guide for Water Utilities to help drinking water and wastewater utilities gain a better understanding of
what climate change-related impacts they may face in their region and what adaptation strategies can be used to prepare their
system for those impacts. This guide also includes information on how drinking water and wastewater utilities can approach
sustainable practices, specifically green infrastructure and energy management activities. It is available at: http://water.epa.gov/
infrastructure/watersecurity/climate/upload/epa817kll003.pdf.
Preparing for Extreme Events: Workshop Planner for the Water Sector, which contains all of the materials a drinking water or
wastewater utility would need to plan a customized workshop that focuses on planning for more frequent extreme events. The
materials on the Workshop Planner encourage utilities to work with their local communities and include them in the planning
process, available at: http://water.epa.gov/infrastructure/watersecurity/climate/upload/epa817fl3001.pdf.
3. PLANNING
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In 2009, the City of St. Peters, Missouri
established a goal of reducing energy use
by 10 percent at its wastewater facility. The city set its
goal under the Energy Management Initiative for
Water and Wastewater Utilities, a pilot program led
by the Missouri Water Utilities Partnership. As a
result of this program, the city implemented
upgrades such as a new SCADA system, variable
frequency drives, and new mixing equipment. The
facility surpassed its 10 percent energy-savings goal
in 2010, avoiding GHG emissions of nearly
550 metric tons of CO2 equivalent—about as much as
the amount emitted annually by 114 cars (U.S. EPA
Region 7,201 la).
1 Secure and maintain management commitment,
involvement, and visibility. The most compelling
argument in favor of energy efficiency improve-
ments is that they represent an opportunity to free up
resources that would otherwise be spent on energy
costs, allowing water and wastewater facilities to use
those resources to make other needed improvements.
Communicating these benefits to the appropriate
managers and obtaining their commitment from the
beginning is crucial. Whether it is the local/county
water board, the mayor of the town/city, or the facility
management, the key decision makers when it comes
to purchasing, budget, and operations are important
players in achieving a successful program. Keeping
management updated with the progress is also impor-
tant to the long-term sustainability of the plan.
1 Choose an energy "fenceline" (i.e., the part of the
facility and its operations that you want to focus on).
See the text box below. Choosing the right energy
fenceline is important to success. Usually the plant
operators will have a good idea of where improvements
need to be made and where issues exist such as high
maintenance costs or inefficiency.
ENERGY FENCELINE
The energy "fenceline" is the scope of operations
where the energy improvement goals will be focused
and implemented. It is important to think about which
operations or areas of the facility have the most outdated
equipment, where the energy use is highest, and how
expensive it would be to upgrade. Examples of energy
fencelines include the operation as a whole, biosolids
management, or aeration equipment.
1 Identify staff (or a champion) to lead the facility's
energy management program. The leadership for
the energy management program will be the person
or team responsible for program implementation. The
leader or leadership team will meet with management
to communicate successes, as well as any barriers or
other challenges that the project encounters. Similarly,
the energy team will be management's contact for
information on the program. The energy team will be
involved in establishing deadlines, delegating tasks,
and evaluating the project at various stages. See the text
box below.
ESTABLISH ENERGY MANAGEMENT LEADERSHIP
Energy management leadership can consist of
one motivated person who champions an energy
management program in smaller water/wastewater
facilities or a few people that have led the efforts at a
larger facility. One leader may need to begin the program
and eventually gain support from others to establish
a team. While a large team is not necessary to ensure
success, a team of people from different areas within
the facility can encourage employee buy-in, help secure
management support, and can provide an avenue for
creative input from a diverse group of employees.
CnrO
—'"vv The City of Columbus, Georgia, decided to
-------
1 Secure and maintain employee and/or manage-
ment buy-in. It is important to have all members of
the facility operations involved and supporting the
energy management program. Employees will be the
ones executing the plan, and it will be easier if they
are convinced from the start that energy efficiency is
important to the facility.
Step 2; Assess Current Energy Baseline Status
Developing a current energy baseline helps a facility
assess its current energy use and provides a level for
comparison with future improvements. Facilities can
also use their energy baseline to determine whether
their energy management goals are reasonable: a
facility that is already highly energy efficient will need
to spend more to further improve its energy efficiency
by a given percentage than a facility that has ample
room for improvement.
1 Establish a baseline and benchmark facilities. The
energy team can use a tool such as EPA's ENERGY
STAR energy measurement and tracking tool,
Portfolio Manager™, to track energy use and costs and
to measure improvements over a baseline. Portfolio
Manager, which includes a benchmarking component
specific to wastewater facilities, converts all types of
energy to a common unit and provides a GHG emis-
sions estimate for each facility. In addition, wastewater
treatment plants that meet certain criteria can receive
an ENERGY STAR performance score from 1 to 100.
This score offers managers the ability to compare the
energy use of their plants with that of other similar
plants nationwide. For information on Portfolio
Manager and free training opportunities, visit: http://
www.energystar.gov/waterwastewater.
EPA also offers the Energy Use Assessment Tool, which
was designed for small- and mid-sized water and
wastewater plants. The tool allows water/wastewater
facilities to conduct a utility bill analysis (looking at
energy consumption over time compared with volume
treated) to determine baseline energy consumption
and cost (in total and broken down to the process level
and equipment level). In addition, the tool highlights
areas of inefficiency that facilities may find useful in
identifying and prioritizing energy improvement proj-
ects. To download the tool, visit: http://water.epa.gov/
infrastructure/sustain/energy_use.cfm.
1 Perform an energy audit. Performing an energy audit
is the next step toward developing a successful energy
management program. An energy audit helps the
facility target the most inefficient aspects of its opera-
tions. Some facilities may opt to perform a compre-
hensive site energy audit based on an analysis of utility
bills and equipment metering data. Others may start
with a general walk-through audit that identifies high-
priority areas to study in greater depth. Depending
on the degree to which equipment and processes are
metered, a more detailed follow-up audit can focus
on one type of equipment or one operation within the
facility. The level of disaggregation in the analysis may
depend on the level of detail that the facility is able to
gather from its electric utility bill. The audit may be
performed by the electric utility or a third party, such
as an independent energy services company. Some
electrical utilities offer free audits to their customers
to help them reduce their energy use. Information
on plant energy audits and a directory of third-party
service providers who can help with audits is available
at: http://www.energystar.gov/index.cfm?c=industry.
bus_industry_plant_energy_auditing. If the facility
has already performed energy audits in the past, it
can revisit and evaluate its previous audits to look for
potential energy-saving opportunities.
California energy company Pacific Gas &
Electric (PG&E) provides energy audits
to industrial, agricultural, and large commercial
clients to help identify energy-saving actions.
PG&E performed an energy audit for the Dublin
San Ramon Services District (DSRSD), a San
Francisco-area drinking water and wastewater
utility, to help make a planned expansion more
energy efficient. The 11.5 million-gallon-per-day
(MGD) facility needed to expand to 17 MGD, and
decided to include a sand filtration recycled water
treatment plant and distribution facilities to
provide water for irrigation of parks, school
grounds, golf courses, and roadway medians. Not
only did PG&E perform an energy audit for
DSRSD, but also provided the water and waste-
water utility with $67,000 in incentives to help
offset the additional $2.2 million that was incurred
to build a more efficient plant. The total estimated
savings for DSRSD was 2,232,000 kWh, or
$290,000 annually (PG&E 2009).
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EXAMPLES OF ENERGY EFFICIENCY IMPROVEMENTS
The examples below represent illustrate a few of the
many actions that water and wastewater facilities can
take to improve energy efficiency and reduce energy
costs. For more examples, see U.S. EPA (2010a).
Water Facilities
• Promote water efficiency and conservation, detect
and fix distribution leaks. Reducing demand for
water and fixing leaks in the distribution system can
reduce the amount of water that needs to be treated
and distributed. Note that water conservation can
ultimately reduce wastewater treatment needs
as well.
Wastewater Facilities
• Improve efficiency of aeration equipment. Aeration
systems in wastewater plants typically account for
about half of a wastewater treatment plant's energy
use. The use of improved system controls, energy-
efficient blowers, and energy-efficient diffuser
technologies can reduce costs in this area.
• Move toward net zero energy. Biogas recovered
from sludge digesters can be burned to produce
electricity and heat buildings at the facility.
Both Water and Wastewater Facilities
• Improve pumping efficiency. Ensuring that pumps
are sized appropriately and installing variable
frequency drives, whose speed varies to match flow
conditions, can reduce energy costs.
• Improve efficiency of HVAC/lighting. Retrofits of
HVAC and lighting systems can have high initial
costs, but are generally cost-effective over the life of
the investment. Efficient HVAC systems can reduce
energy use by 10-40%.
• Improve efficiency of operations. Installing
Supervisory Control and Data Acquisition (SCADA)
software can increase the efficiency of process
monitoring and operating control.
Source: U.S. EPA 2010a
Identify activities and operations that consume the
most energy or are inefficient. The energy team and
facility operators can use information from the energy
audit to identify the most energy-intensive and/or
inefficient activities and operations in the facility. This
step may require comparisons with the rated efficiency
listed on equipment nameplates, or comparisons with
similar models of equipment to get an idea of typical
energy consumption.
Depending on who is involved in the facility's lead-
ership, different members of the operation could
be brought together to identify where efficiency
improvements may be appropriate. The plant opera-
tors usually have the best understanding of equipment
performance. Building managers may have ideas about
ways to improve efficiency of lighting, HVAC, or other
aspects of the building itself.
The energy team can develop an inventory to identify
the operations and pieces of equipment in the facility
consuming the most energy. The inventory can include
the equipment names, nameplate horsepower (if
applicable), hours of operation per year, measured
power consumption, and total kilowatt-hours of elec-
trical consumption per year, and age (if applicable).
The team can gather and store this information using
EPA's Energy Use Assessment Tool (available at:
http://water.epa.gov/infmstructure/sustain/energy_
use.cfm). In some cases, this information may already
have been stored in a maintenance management system
or may have been collected by the auditors.
TECHNOLOGIES FOR WATER AND WASTEWATER
UTILITIES
EPA's Technology Fact Sheets for Wastewater provide
information on a range of technologies—including tools
for energy management—that could be implemented at
a wastewater treatment facility. These fact sheets include
information on treatment processes (e.g., disinfection,
biological treatment) and wastewater equipment
(e.g., pipes, disinfection equipment). They also include
information about the cost of implementation and
maintenance of the technology that can be useful in the
planning process. The fact sheets are available at: http://
water.epa.gov/scitech/wastetech/mtbfact.cfm.
For more information on energy efficiency and
conservation technologies for water and wastewater
facilities, see:
• Evaluation of Energy Conservation Measures for
Wastewater Treatment (U.S EPA, 2010a).
• Energy Efficiency in the Water Industry: A
Compendium of Best Practices and Case Studies
(Water Research Foundation, 2011).
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3. PLANNING
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At Goose Creek Sewage Treatment Plant
in West Chester, Pennsylvania, a 2010
energy audit showed that treatment equipment
(such as aerators, blowers, and pumps) accounts
for approximately 95 percent of the facility's elec-
tricity consumption. To identify possible energy
conservation and efficiency opportunities, the
facility developed an inventory of its major equip-
ment. The inventory includes descriptions and
quantity of equipment, nameplate horsepower,
estimates of run hours, and calculations of
kWh/yr. The inventory revealed that blowers
account for 57 percent of the total energy use of all
treatment equipment at the plant (U.S. EPA
Region 3,2011).
Step 3: Establish an Energy Vision and
Priorities for Improvement
This step involves identifying and establishing priori-
ties for the facility's energy efficiency improvements.
Based on results of energy assessments and audits,
identify, evaluate, and prioritize potential energy
improvement projects and activities. The energy
team can make a list of all of the projects that could
be implemented to increase energy efficiency. These
projects may involve operational changes (e.g., shifting
to greater use of off-peak electricity) or equipment
upgrades (e.g., replacing a pump). Employees who
work in areas within the energy fenceline will be a
good source for project ideas, as they are most familiar
with the daily operations and the equipment. See the
text box on page f f for examples of energy efficiency
improvements.
KEY DEFINITIONS
• Goal: A quantitative or qualitative result that a
facility has decided to achieve.
Example: Reduce facility energy use by 25%.
• Objective: A shorter-term step that a facility needs
to complete in order to ultimately achieve its goal.
Example: Create an energy management team.
• Target: A measurable performance requirement
associated with a goal or objective.
Example: Reduce facility energy use by 25% from
2011 levels by 2015.
Once the possible projects have been identified, the
next step is to prioritize which projects can be imple-
mented. The energy team can develop a set of criteria
that will be used to evaluate the projects against each
other, considering factors such as payback period
and up-front cost of implementation. In general, the
team can prioritize "low hanging fruit" opportunities
in the most energy-intensive processes in the opera-
tion of water or wastewater facilities, focusing on
actions that provide the greatest reduction of energy
at the lowest cost (U.S. EPA, 2010a). This approach
will favor making improvements in energy efficiency
before pursuing options for on-site renewable energy.
Energy efficiency improvements will also help reduce
a facility's overall energy requirements, potentially
reducing the capacity required from renewable
sources if the facility is aiming to be a "net zero"
consumer of energy. Examples of criteria that could
be used in priority ranking include:
>• Capital costs
>• Operation and maintenance costs
>• Potential for energy reduction
>• Maintenance required
>• Existing need for equipment upgrade
>• Return on investment
>• Regulatory requirement
>• Ease of implementation
After the list of criteria is established, the energy team
can evaluate each project under each of the criteria.
Projects that score the highest can receive priority.
See Appendix H on page f 05 of EPA's Ensuring a
Sustainable Future guidebook for an example ranking
table, available at: http://water.epa.gov/infrastruc-
ture/sustain/upload/Final-Energy-Management-
Guidebook.pdf.
Step 4: Identify Energy Objectives and Targets
Establish energy objectives and targets for priority
improvement areas. Specific objectives and targets
can be identified for each of the projects that have been
prioritized. These targets can be ambitious but realistic,
and measurable.
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Define performance indicators. Performance indica-
tors are quantifiable measurements that the facility
will need to take or obtain to measure progress toward
facility targets. Indicators may be developed from the
electricity bill, natural gas bill, or internally generated
reports, and need to be easily accessible.
POSSIBLE OBJECTIVES FOR ENERGY EFFICIENCY
PROJECTS
• Reduce energy costs.
• Reduce peak energy demand.
• Reduce GHG emissions.
• Improve reliability.
• Reduce reliance on fossil fuels.
• Achieve net zero energy consumption through
energy efficiency and on-site renewable energy
generation.
Using performance indicators such as electricity
consumption or energy cost per gallon of water or
wastewater treated gives the energy intensity of the
process instead of the total energy consumed. This
allows the facility to compare its performance against
that of other facilities, and to compare the different
processes of the path of treatment. ENERGY STAR's
Portfolio Manager tool, described on page 10, facil-
itates this comparison and allows wastewater plants to
benchmark their energy consumption.
Examples of performance indicators include:
Electricity consumption per unit of time or gallon
of water or wastewater treated
Natural gas consumption per unit of time or gallon
of water or wastewater treated
Peak electricity demand
Energy cost per unit of time or gallon of water or
wastewater treated
Step 5: Implement Energy Improvement
Programs and Build a Management System to
Support Them
Now that the water or wastewater facility has decided
which improvements will be made, along with the
targets and objectives for those improvements, it must
prepare for implementation and build a management
and operations structure that can ensure the programs
long-term success.
Develop action plans to implement energy improve-
ments. Creating a formal action plan outlining respon-
sibilities and a timeline will help to keep the imple-
mentation on track and ensure that all participants
are aware of their role in the implementation. Tasks
such as replacing blowers and pumps or installing a
new disinfection system may be complex and involve
multiple stages that need to be laid out. Facilities can
follow these steps:
1. List the tasks that need to be performed.
2. Assign responsibilities for who will perform these
tasks.
3. Establish deadlines for these tasks. Remember to
keep these deadlines realistic but consistent with the
overall goal timeline.
4. Estimate staff time and cost (e.g., equipment, labor,
other services) for implementation. Approve these
costs with managers (even if they have already
approved them).
5. Coordinate with state regulatory agencies to deter-
mine if changes in equipment or operations require
any regulatory review.
Get senior level management's commitment and
approval. Managers can ensure that the energy
management program aligns with other goals for the
facility and that the capital costs and staff time are
reasonable and feasible.
• Develop management system "operating controls"
to support energy improvements. Operating controls
are documents that specify the way to execute a certain
activity or operation. These controls need to be estab-
lished before implementation.
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3. PLANNING
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Operating controls include:
>• Training: Evaluate current training to determine
if energy management training can be incorpo-
rated into an existing training program to reduce
burden.
>• Communication: Evaluate internal and external
communications to determine where communica-
tion of the energy policy and energy goals can
be directed within the facility (e.g., employees,
managers) and outside of the facility (e.g., local
citizens, energy advisory groups, local officials).
> Controlling documents and managing records:
Review and evaluate the current document control
and records procedures. Ensure that the proce-
dures are updated to account for changes to the
energy management program.
>• Work instructions or Standard Operating
Procedures and operations/equipment manuals
for energy improvements: Operating controls
outline the procedures for maintenance, calibra-
tion, and operation of or piece of equipment or
process. Operating controls may or may not need
to be updated to include the most recent energy
improvements that the facility will implement. The
facility can review the current operating controls
and update or draft new ones. Additionally, it can
review the maintenance and calibration require-
ments to be sure that these are consistent. After
requirements have been developed and checked
for completeness, the energy leaders can commu-
nicate the operating controls to staff, discuss the
effectiveness of the procedures with staff, and make
changes accordingly.
Swatara Township, Pennsylvania, decided
to include energy efficiency among the
standard selection criteria that it uses when selecting
new treatment processes at its wastewater facility. In
2005, the facility responded to stricter nutrient
discharge limits by evaluating several alternatives to
its current treatment process. Energy use ended up
being the differentiating feature among the processes
evaluated, leading the facility to decide to upgrade its
aeration process. In its decision, the facility factored
in the impact of future energy prices in Pennsylvania,
which are expected to nearly double the cost of power
over the life of the plant. By reducing its energy needs
now, the facility's efficiency improvements will result
in even greater cost savings in the future as energy
prices increase (Whittier et al., 2011).
1 Begin implementation once approvals and systems
are in place. Once key managers and staff have the
information they need, understand their tasks and
responsibilities, and have a clear vision of the program's
goals and objectives, they will be prepared to imple-
ment energy efficiency improvements in their facilities.
Step 6: Monitor and Measure Results of the
Energy Improvement Management Program
' Review what the facility currently monitors and
measures to track energy use. The purpose of this step
is to review and compile what was already collected in
Step 2 when performing the energy audit. The facility
can gather all of this information into one centralized
location and review to make sure the information is
accurate.
1 Determine what else the facility needs to monitor
and measure its priority energy improvement activi-
ties. Next, the water or wastewater facility can evaluate
progress toward its energy targets. If there are data that
need to be obtained, where and how will the facility
obtain them? This step may require going back to
review the energy objectives and targets.
COMPREHENSIVE ASSET MANAGEMENT FOR WATER
AND WASTEWATER UTILITIES
Comprehensive asset management is a process by
which water and wastewater utilities obtain detailed
information on the age and condition of their capital
assets, determine maintenance needs, assess risks, and
set priorities for maintenance and replacement. Asset
management can also be used to identify opportunities
for improving energy efficiency.
EPA's Check Up Program for Small Systems (CUPSS)
tool is a free asset management tool for water and
wastewater utilities. Utilities can use CUPSS to develop
a record of their assets, a schedule of required tasks, an
understanding of their financial situation, and a tailored
asset management plan. For more information, please
visit: http://water.epa.gov/infrastructure/drinkingwater/
pws/cupss/index. cfm.
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1 Develop a plan for maintaining the energy efficiency
of equipment. Maintaining any energy-using equip-
ment that has been installed is vital to the continued
success of an energy program. The maintenance
schedule for each piece of equipment or system needs
to be noted, considering the following questions:
>• Who is responsible for maintenance? Does the
vendor provide maintenance?
>• How often does maintenance need to be
performed? What are the actions for maintenance?
>• If the facility is performing the maintenance, are all
of the necessary resources available (e.g., fuel, spare
parts, niters, etc.)?
>• Will outside contractors need to be brought in to
perform maintenance?
>• Is the performance evaluated with the
maintenance?
>• Where are the records kept for the maintenance
and performance evaluations?
Determining the answer to these questions is impor-
tant to maintaining the program and the operation.
Large equipment typically has high repair costs that
may be prevented through regular maintenance.
1 Review the facility's progress toward energy
targets. Develop a plan for regular review of progress
toward the facility's energy targets. This may include
conducting periodic energy audits or simply reviewing
energy data over time. Energy managers can use EPAs
ENERGY STAR Portfolio Manager tool and/or EPAs
Energy Use Assessment Tool (both described in Step 2)
to review energy data over time.
City of Joplin, Missouri uses EPA's
ENERGY STAR Portfolio Manager to
track energy use and consumption patterns at its
wastewater treatment facility by entering monthly
energy data gathered from electric utility bills. The
city is using this information to optimize new
systems and guide planning for future invest-
ments. During the first three months of 2011,
upgraded equipment installed at the facility
reduced overall energy demand by 5.8 percent
compared to the same period during the previous
year (EPA Region 7, 2011 a).
1 Take corrective action or make adjustments when the
facility is not progressing toward its energy goals.
During the review of progress toward energy targets, a
facility may find that some goals will not be attained by
the original deadline. Several questions can be asked to
determine the source of the problem:
>• Was the target realistic?
>• Were the identified tasks sufficient to achieve the
targets?
>• Were some tasks not completed?
>• Did anything change (e.g., flows, energy prices,
personnel)?
Depending on the answers to these questions, the
facility may need to modify its target, controls, or
systems. To ensure success, the facility may need
to develop an alternative strategy for achieving its
goals. For more strategies, see Section 6, Strategies for
Effective Program Implementation.
~ Monitor/reassess compliance status. Compliance
with public health and environmental standards is
one of the primary goals for a water or wastewater
treatment facility. The facility must ensure that the
energy management program has not compromised
compliance.
Act
Step 7: Maintain the Energy Improvement
Program
Once the projects have been implemented, the facility
can go back and evaluate the energy goals, apply
lessons learned, and get others involved and aware of
the projects.
1 Continually align energy goals with other business/
operational goals. Beyond compliance, there are other
goals that the facility has to fulfill or strive for in order
to operate successfully. Energy efficiency improvement
goals will change as overall business or operational
goals evolve.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
3. PLANNING
15
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1 Apply lessons learned. After a facility has gone
through an energy improvement program, the energy
team can create a list of lessons learned. This list will
help inform future energy program implementation
at the facility, but may also be used to communicate
successes and difficulties to other facilities.
1 Expand involvement of management and staff, as
necessary. After a program has been implemented,
maintenance and evaluation will be continuing tasks.
To get others involved in these ongoing processes, a
facility can consider expanding the leadership team to
include other management, staff, or local officials who
have gotten involved in the project during its imple-
mentation. These people may not have been included
on the original leadership team, but their perspective
and experience can prove valuable.
1 Communicate success to facility management and
local decision makers (e.g., boards, town councils,
etc.). Communicating the success of the program to
others helps ensure continued support from manage-
ment and the larger community. It may also help lead
to additional projects at the facility, other facilities, or
other government operations. EPA's Portfolio Manager
tool, described on page 10, can help with this step
because it automatically provides estimates of CO2
emissions reductions and other benefits based on
energy savings.
The activities in this step will help facilities identify
opportunities for further energy efficiency improve-
ments and future initiatives, completing the plan-
do-check-act cycle and leading back to the planning
activities described above under Step 1.
4. KEY PARTICIPANTS
Local governments can work with a range of partici-
pants to plan and implement programs to improve
energy efficiency in water and wastewater facilities.
This section provides information on these partici-
pants, along with descriptions and examples of how
each can contribute unique authority or expertise.
1 Mayor or county executive. Local government execu-
tives can provide key support for an energy efficiency
program by mobilizing resources and ensuring
program visibility. Many local government executives
have appointed energy advisory committees to provide
guidance on improving energy efficiency in facilities
and operations. Working with these committees, while
effectively communicating the financial and envi-
ronmental benefits of energy efficiency, can gain the
mayor's or county executives support for energy effi-
ciency improvements upfront and help ensure success.
Indianapolis Mayor Gregory Ballard
faced the challenge of addressing
combined sewer overflows4 of 7.8 billion gallons
per year. He initially considered a proposal to
implement a new system that would cost
$3.8 billion over 20 years and increase sewer rates
to more than $100 per month. Convinced that
more cost-effective options might be available, the
mayor directed the Indianapolis Department of
Public Works (DPW) to review and modify the
plan. The DPW identified sustainable solutions
such as green roofs, rain gardens, and bioswales5
that could prevent nearly half the problematic
runoff from entering the stormwater system and
save $740 million (Indianapolis DPW, 2011). To
learn how other municipalities could undertake
similar integrated approaches to stormwater and
wastewater planning, please see http://cfpub.epa.
gov/npdes/integratedplans. cfm.
1 City or county council. In many local governments,
the city or county council must approve energy effi-
ciency improvements, especially if substantial funding
or a change to existing policies or codes is required. In
addition, many city and county councils have initiated
energy efficiency improvements by establishing policies
that require departments to reduce energy consump-
tion. Many local government legislative bodies have
passed resolutions to participate in the ENERGY
STAR Challenge6 or other regional, national, and
international campaigns to improve energy efficiency
and reduce impacts on the climate. Involving the city/
county council from the beginning of the program
(e.g., attending a meeting to outline the plan) will
provide an opportunity for sharing ideas and possibly
developing future legislation.
4 Combined sewer overflows occur when the volume of wastewater and
stormwater in a sewer system exceeds the capacity of the treatment plant.
5 Green roofs, also known as rooftop gardens, are vegetative layers grown
on rooftops. Rain gardens are planted depressions that allow rainwater to be
absorbed into the ground, reducing runoff. Bioswales are landscape elements
designed to remove silt and pollution from surface runoff water.
6 The ENERGY STAR Challenge is EPAs national call-to-action to improve
the energy efficiency of America's buildings and facilities by 10 percent
or more. For more information, visit: http://www.energystar.gov/index.
cfm?c=challenge.bi
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—*"*>. The City Council of Austin, Texas has
i been very involved in the water effi-
ciency measures adopted by the city. In 2006, the
council charged a citizen water conservation
implementation task force with recommending
additional conservation measures to reduce water
use. The task force set goals to reduce peak water
use by 1 percent per year over a 10-year period.
Its plan involved incentive programs, water
audits, retrofits, education/outreach programs,
and reclamation and reuse. The city has imple-
mented many of the task force's recommenda-
tions (Alliance for Water Efficiency, 2010). In
2012, the council voted unanimously to revise
Austin's water use strategy in order to continue
strengthening conservation efforts while
protecting the city's urban landscape and tree
canopy (Austin Water, 2012).
1 Local code enforcement officials and planning
departments. Local governments can work with their
code enforcement officials and planning departments
to update codes to incorporate energy efficiency strate-
gies for water and wastewater treatment. Planning
departments can also be responsible for developing
local energy plans that can include energy efficiency-
specific goals and activities. Adding energy efficiency
measures at a water or wastewater facility to the local
energy plan is an effective way to address water conser-
vation and efficiency within the community.
1 Local water consumers. Residential, commercial, and
industrial consumers have key roles to play in water
efficiency and conservation, along with supporting
initiatives to improve energy efficiency at water and
wastewater facilities. As ratepayers, local consumers
have a vested interest in reducing energy costs and
improving the efficiency of operations at water and
wastewater plants. Publicly owned water and waste-
water facilities may need to educate and reach out
to residents to raise awareness and build support for
proposed improvements.
Strong community participation in water conserva-
tion efforts can greatly reduce energy use at the
water or wastewater facility by reducing demand for
water and the amount of wastewater that needs to be
treated. Combining community water efficiency and
conservation efforts with energy efficiency improve-
ments at water or wastewater plants can result in
significant cost savings and environmental benefits.
Through its efforts to engage and
educate the community, the government
of Brattleboro, Vermont, succeeded in securing
strong public support to move forward with a
$32.8 million upgrade project at its wastewater
treatment facility (City of Brattleboro, 2012). The
upgrade is being financed through a combination
of municipal bonds and state revolving loan
funds. To inform its residents about the impor-
tance of the project, the town government held
public meetings, gave presentations, and repeat-
edly aired a 45-minute video on local television
explaining the upgrades (Urffer, 2009).
1 Water development boards. Water development
boards are state agencies that are responsible for
overseeing the development, conservation, and quality
of water resources for states and localities, as well as
wastewater treatment. The water development board
is often responsible for the long-range planning of
water projects and ensuring appropriate water quality
through effluent regulations, which can be an impor-
tant factor in installing new energy-efficient equip-
ment. Some development boards also administer the
state revolving funds, and water or wastewater facilities
and local government officials can contact them for
more information about applying for these funds.
CnrSJ
—'"^v The Texas Water Development Board's
i Water Conservation Best Management
Practices Guides offer a range of practices for
implementing water conservation. http://www.
twdb. texas.gov/conservation/bmps/index. asp
~ State energy and environmental departments. State
energy and environmental offices can often provide
local governments with information resources and
technical assistance in planning energy efficiency strat-
egies for local water and wastewater facilities.
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4. KEY PARTICIPANTS
17
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^>, Florida's Department of Environmental
*-*-—* Protection (DEP) established a water reuse
program to help decrease the volume of wastewater
in the state. Of the more than 3,000 wastewater treat-
ment facilities throughout Florida, 482 facilities have
been permitted to make reclaimed water available for
reuse. The DEP works with Florida's five regional
water management districts and with individual
municipal wastewater utilities to promote and facili-
tate reuse activities through technical assistance and
outreach. More than 280,000 residences, 500 golf
courses, and hundreds of parks and schools in
Florida are irrigated with reclaimed water. The state
currently uses about 659 million gallons per day of
reclaimed water, compared with 6 billion gallons of
freshwater (Florida DEP, 2011).
1 State legislatures. State legislatures have the authority
to pass legislation that would reduce energy use at
water or wastewater facilities. Several states have
passed legislation that mandates water conserva-
tion programs for local governments, requires the
consideration of energy-efficient equipment in new
facilities, or establishes a water reuse program. Local
governments would be responsible for following or
implementing these programs, and may thus benefit
from being involved in the decision-making process at
the state level.
m 2012, a new Massachusetts law added
biogas digesters to the list of technologies
covered under the state's net metering law. Under net
metering, facilities that produce their own renewable
energy are allowed to sell their excess generation
through the electrical grid. The new law provides an
added incentive for wastewater facilities in the state
to capture biogas from anaerobic digestion and use it
to generate electricity (Commonwealth of
Massachusetts, 2012).
1 State water quality agencies. State water quality agen-
cies monitor effluent quality for wastewater treatment
plants. They also ensure that equipment or processes
modified to improve energy efficiency will not affect
water quality. When performing an upgrade to the
treatment system, a water or wastewater facility may
need to contact the agency to apply for or renew a
water quality permit.
1 State drinking water primacy agencies. State drinking
water primacy agencies have been delegated the
authority by EPA to implement the requirements of the
Safe Drinking Water Act. They also ensure that equip-
ment or processes modified to improve energy effi-
ciency will not affect drinking water quality or public
health. When performing an upgrade to the treatment
system, a water facility may need to contact the
primacy agency to review the plans for the proposed
changes.
1 Public service commissions. Public service commis-
sions regulate rates charged by private water and
wastewater utilities (and public utilities in some states),
establish service territories, monitor utility services,
and perform other regulatory and outreach functions.
Public service commissions can play a key role in
facilitating "net zero" energy and other energy or water
conservation efforts at water and wastewater facilities.
P~y, After receiving an application for permis-
*--—f sion from a county water and sewer
authority, the North Carolina Utilities Commission
determined that biosolids used to produce energy at
wastewater treatment facilities would be considered
renewable energy, allowing them to qualify for a
renewable energy credit from the state. Previously,
North Carolina's renewable energy credit was limited
to solar, wind, and other conventional renewables
(North Carolina Utilities Commission, 2011).
1 Federal agencies. Federal agencies can provide
energy efficiency information and resources for local
government officials and officials running water and
wastewater facilities. See Section 8, Federal, State, and
Other Program Resources for information on relevant
programs.
1 Non-profit organizations. A number of water and
wastewater facilities have partnered with non-profit
organizations such as the American Water Works
Association, the Consortium for Energy Efficiency,
the Alliance to Save Energy, the Alliance for Water
Efficiency, or the Water Environment Federation to
plan and implement energy efficiency projects in their
facilities and operations. These organizations offer
water and wastewater facilities technical assistance, and
can direct them to information on energy efficiency.
Refer to Section 8, Federal, State, and Other Program
Resources for more information about specific non-
profit organizations.
18
4. KEY PARTICIPANTS
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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1 Design engineers. Design engineers are hired to create
wastewater or water treatment systems that comply
with the regulations and other objectives of a treatment
upgrade. Water or wastewater facilities can inform
design engineers upfront when making major upgrades
that energy efficiency is one of the key decision criteria
and is a priority of the project.
The Brightwater Wastewater Treatment
System in King County, Washington, is a
$1.8 billion construction project that incorporated
energy efficiency and other environmental consid-
erations in the facility design and construction.
The treatment plant's aeration system uses high-
efficiency microturbine blowers that are
30-50 percent more efficient than traditional
blowers, and incorporates other air handling
modifications that together reduce energy
consumption by approximately 50 percent
compared with conventional systems. The project
brought together architects, engineers, and
contractors to create an environmentally friendly
and financially efficient construction process.
Through these efforts, the Brightwater Team has
reused 370,000 tons of construction materials,
saving about $39,000 and avoiding 180 metric tons
of carbon dioxide emissions, equivalent to GHG
emissions of more than 30 cars (EPA Region 10,
2009).
1 Electric utilities. Electric utilities can be important
resources for water and wastewater facilities. Some
have programs that provide free energy audits for facil-
ities, rebates for energy-saving equipment, or programs
to help increase energy efficiency at the plant. The elec-
tric utility is also an important source for obtaining the
energy consumption data for the facility that will be
necessary when establishing the energy baseline and as
the facility is tracking progress of the energy reduction
goals. Some electric providers also provide financial
incentives for energy conservation and peak demand
reduction—Tennessee Valley Authority is one example.
Oregon's electric utilities provide free
energy audits by third-party auditors to
wastewater utilities. The audits include a walk-
through of the facility and preliminary cost esti-
mates (Energy Trust of Oregon, 2011).
1 Vendors. Vendors that sell energy-efficient products
can provide cost information and details about the
performance of energy-efficient alternatives to help
facility energy managers decide which equipment
would work best for their facility.
1 Energy services companies (ESCOs). Many local
governments have contracted with ESCOs to conduct
energy audits and perform energy efficiency upgrades
on a performance-contracting basis. Under a perfor-
mance contract, local governments can often avoid
using capital budgets to pay for the upfront costs
of energy efficiency improvements, which are paid
for over time using energy cost savings. For more
information on energy performance contracts, see
Section 7, Investment and Financing Opportunities. The
Federal Energy Management Program keeps a list of
qualified ESCOs.7
In September 2007, the City of Rome,
New York, teamed with Johnson Controls
to install $2 million worth of energy efficiency
improvements that will pay for themselves through
lower electric utility bills. The self-funded perfor-
mance contract included lighting upgrades, a new
boiler, energy management systems, and building
envelope improvements. Based on the upgrades'
success, the city entered into another performance
contract with Johnson Controls in February 2008 to
trim energy costs at its wastewater treatment facility.
This contract includes both modernizing and
increasing the plant's capacity. The facility will save
more than $100,000 annually through reduced
energy consumption, while making it easier for the
plant to meet its discharge permit requirements
(Johnson Controls, 2009).
1 Water efficiency services companies. This emerging
field of companies can perform water audits and imple-
ment water conservation measures to help reduce the
amount of water that must be processed by water and
wastewater facilities, helping to improve energy effi-
ciency. A local government or water/wastewater facility
may want to hire a water efficiency services company
to implement water efficiency and water conserva-
tion measures at the largest consumers of water and
producers of wastewater. These services would reduce
the total amount of water that needs to be treated and
ultimately lead to energy and cost savings.
7 For more information on the qualifications and for a complete list, see
http://wwwl.eere.energy.gov/femp/financing/espcs qualifiedescos.html.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
4. KEY PARTICIPANTS
19
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5. FOUNDATIONS FOR
PROGRAM DEVELOPMENT
This section provides examples of a range of strate-
gies local governments have used to launch energy
efficiency programs and policies in their water and
wastewater facilities.
1 Mayor or county executive initiatives. Local govern-
ments can use the visibility of the mayor's or county
executive's office to encourage the local facilities to
improve energy efficiency, often through executive
orders or other proclamations.
?\- Mayor Bill Finch of Bridgeport,
^-—* Connecticut, is a vocal proponent of
improving his city's environmental sustainability.
The Finch administration has established an
Energy Improvement District to promote the plan-
ning, development, and funding of energy-related
activities—one of which is a project to install an
anaerobic waste digester and CHP system at a city
wastewater treatment plant (City of
Bridgeport, 2012).
1 Local government resolutions. City and county coun-
cils can initiate energy efficiency programs in water
and wastewater facilities. Many local, state, and federal
governments have adopted standards that include
energy and water efficiency measures and/or have
mandated that new government buildings meet green
building standards (see text box on this page). Building
codes are regulations adopted by local and state
governments that establish standards for construction,
modification, and repair of buildings and other struc-
tures. An energy code is a portion of the building code
that relates to energy use and conservation require-
ments and standards (see www.energycodes.gov).
Building codes can help a water or wastewater facility
save energy.
1 Local government programs. Many local govern-
ments have implemented strategic plans to improve
energy efficiency within local operations. As a result,
some local water and wastewater facilities have imple-
mented energy efficiency activities under broader
efforts coordinated by local governments. Electric
utilities (including local municipally owned utilities)
may coordinate with water and wastewater facilities to
help the facilities achieve their energy reduction goals.
GREEN BUILDING
Green building initiatives promote human and
environmental health and resource conservation over
the life cycle of a building. A variety of green building
standards exist, covering energy efficiency, water
efficiency, and specific components of the building.
Standards for water efficiency help reduce overall water
use and demand at water and wastewater facilities. Many
green building standards specify the use of WaterSense
products. For more information on WaterSense, see
Section 8, Federal, State, and Other Program Resources.
Water and wastewater facilities that construct or
renovate to green building standards can achieve
energy efficiency improvements in lighting, heating,
and air conditioning, complementing the improvements
achieved through upgrades to the facility's operating
equipment.
In 2005, the City of Saco, Maine, formed
an energy committee composed of one
city councilor and five city staff. After signing on
to the voluntary Governor's Carbon Challenge
with a commitment to reduce its GHG emissions
to 25 percent below 1990 levels by 2010, the
committee began to identify a number of emis-
sions reduction projects it could implement in
city-owned property. It started by upgrading
lighting and refrigerators, and then turned to the
wastewater treatment facility—the largest
consumer of energy in the city. Through a combi-
nation of energy efficiency and renewable energy
upgrades—including a variety of process and
equipment efficiency improvements in the plant, a
wind turbine that generates electricity for the
administration building, and the use of wastewater
effluent to provide geothermal heating and cooling
for another building, the treatment facility is
expected to save $10,000 per year, or about 67,000
kWh (City of Saco, 2012).
20
5. FOUNDATIONS
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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1 Local ordinances. Many local governments have
enacted water conservation ordinances as a way to
save or protect local water resources. A locality might
implement an ordinance to restrict outdoor watering
of lawns completely or on certain days of the week.
Or a community could require that landscaping plans
consider water use on new construction projects.
Ordinances can also be an effective way to decrease
water use, thereby reducing energy use in water and
wastewater treatment facilities.
The City of Indio, California, passed an
ordinance to improve water conservation
through water waste prevention and by mandating
the installation of landscaping equipment to improve
water conservation (e.g., rain-sensing devices that
override lawn sprinklers set on automatic timers)
(City of Indio, 2011).
1 Individual water or wastewater facility initiatives.
An individual facility may adopt cost-effective energy
efficiency initiatives in its buildings and plant opera-
tions that are not necessarily part of a larger initiative
across all facilities by the parent water or wastewater
utility. For example, a facility could improve the energy
efficiency of building operations by installing motion
sensors in rooms and task areas, which would avoid
large capital investments in energy efficiency improve-
ments while providing energy savings over time.
1 Water or wastewater facility planning process. In
both water and wastewater treatment, pumping is
a very energy-intensive process. Energy use can be
avoided by reducing the distance that water or waste-
water must be pumped, or by using gravity rather than
pumping wherever possible. While the siting of water
treatment facilities is determined largely by topography
and the location of water sources, wastewater facilities
can be decentralized to provide treatment and reuse
services close to individual point sources of wastewater
generation, such as industrial facilities, clusters of
homes, or individual buildings (see the text box on
page 5 describing siting considerations).
Local governments have an opportunity to influence
the location of water and wastewater facilities through
the use of comprehensive plans and design guidelines,
which set forth policies, goals, and objectives to direct
development and conservation that occur within a
planning jurisdiction. These plans and guidelines
generally have a broad scope and long-term vision.
Design guidelines provide a connection between
general planning policies and implementing regula-
tions, such as zoning codes and subdivision regula-
tions. Zoning codes implement the goals and objectives
of a comprehensive plan. By incorporating the energy-
conscious siting of water and wastewater system in
comprehensive plans, pumping needs can be reduced
to save energy.
6. STRATEGIES FOR
EFFECTIVE PROGRAM
IMPLEMENTATION
Consistent with the steps described above for planning
and program development, water and wastewater facil-
ities can use a number of implementation approaches
to improve energy efficiency, including:
1 Engage leadership and management. By creating a
well-defined energy plan and effectively communi-
cating the benefits of energy efficiency, focusing in
particular on costs and benefits (e.g., payback period,
return on investment, rates of return, GHG reductions,
criteria pollutant reductions), the energy team can
build support and buy-in from facility managers as well
as external decision makers such as municipal leaders.
1 Obtain adequate information on energy-efficient
technologies, their costs and benefits, and how to
finance upgrades. Federal, state, and nongovernmental
agencies and organizations offer a range of informa-
tion resources that water and wastewater facilities
can use to develop implementation plans and identify
funding opportunities. For a list of resources and local
government case studies, refer to Section 10, Additional
Examples and Information Resources.
' Pursue creative financing options. Many local, state,
and federal agencies offer funding or financing for
energy efficiency improvement projects. For a list
of funding and financing options, refer to Section 7,
Investment and Financing Opportunities.
1 Develop political consensus. Local government deci-
sions can be inhibited, or the process can be prolonged,
when key stakeholders disagree on fundamental goals
or approaches. To avoid this risk, local governments
can take steps to educate stakeholders about the many
benefits of energy and water efficiency, and build
support for incorporating efficiency goals into local
initiatives and ordinances.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
6. STRATEGIES
21
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Strategies for Developing an
Energy Efficiency Program
1 Maintain leadership to continually improve the
energy efficiency program. Maintaining the energy
management leadership that was established at the
beginning of the program is critical to the continued
success of the energy efficiency program. Leadership
could consist of one champion to head the program, or
an energy team at a larger water or wastewater facility
which can be made up of local officials, operators,
building maintenance officials, and other members of
the facility who can gain buy-in from all groups within
the operation. When the people who will be operating
the equipment are involved in the planning, the
benefits are more likely to be sustained.
The town of Trumbull, Connecticut, has
taken a systems approach to determine
how to improve the energy efficiency of one of its
sewage pumping stations. The town used a team of
three engineers plus several consultants from the
manufacturer of a new pump being used in the
project to evaluate the system as a whole. Based on
the evaluation, the team installed an additional
pump and removed an ineffective pump speed
control system, reducing the system's energy use by
31,900 kWh per year—a 44 percent reduction—
and saving $2,600 annually in energy costs. The
total capital costs for implementation were
$12,000, resulting in a payback of 4.6 years (U.S.
DOE, 2005b).
1 Adapt activities to each unique facility. Some energy
efficiency measures may be successful for some facili-
ties but not for others. Each individual facility can eval-
uate its goals and determine which energy efficiency
measures are most appropriate.
1 Combine low-cost energy efficiency measures with
higher-cost measures. Combining energy efficiency
measures that have lower implementation costs with
those that have higher costs can allow facilities to use
savings from the low-cost measures to offset the costs
of the more expensive measures, shortening the overall
payback period.
1 Train facilities operation and maintenance staff.
By training staff in proper use and maintenance of
energy-efficient equipment and processes, facilities
can increase their ability to sustain energy efficiency
upgrades into the future. Equipment can become less
efficient without proper maintenance and cleaning.
1 Integrate energy efficiency and clean energy supply
objectives. Water and wastewater facilities around the
country are adopting renewable energy technologies to
help reduce the use of energy generated by fossil fuels.
Examples of renewable energy include combined heat
and power, sludge digester methane use, solar panels
on roofs or property, and wind turbines. (See EPA's
Green Power Procurement, On-Site Renewable Energy
Generation, Combined Heat and Power, and Landfill
Gas Energy guides in the Local Government Climate
and Energy Strategy Guides series for more informa-
tion on renewable energy.)
Sewerage Commission-Oroville
Region (SCOR) in Oroville, California,
has installed a 520-kW solar power system that
meets 80 percent of the wastewater treatment
plant's electricity needs. The facility is designed to
treat 6.5 million gallons of wastewater per day and
is located on 60 acres, providing plenty of room
for photovoltaic panels (SPG Solar, 2012).
1 Recognize success. Government agencies and
programs have recognized exemplary work by local
governments and utilities as a way to highlight inno-
vation and promote solutions for water and energy
efficiency initiatives. Local governments can help to
spread the word to the public and other governments
through news releases and website postings about
water and wastewater facilities that have won state or
federal awards.
EPA gives out the Drinking Water State Revolving
Fund (DWSRF) Awards for Sustainable Public
Health Protection to recognize projects funded
by DWSRF that exceed requirements and show
creativity and dedication to public health protec-
tion. For more information on applications, local
governments or facilities can contact the applicable
program manager in their state; a list is avail-
able at: http://www.epa.gov/ogwdw/dwsrf/nims/
dwagency2.pdf.
22
6. STRATEGIES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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EPA's CHP Partnership administers the annual
ENERGY STAR CHP Awards, which are given to
highly efficient CHP systems that reduce emissions
and use at least 10 percent less fuel than compa-
rable, state-of-the-art, separate heat and power
generation systems. To apply, or for more informa-
tion, visit: http://www.epa.gov/chp/partnership/
awards.html.
GWINNETT COUNTY DEPARTMENT OF WATER
RESOURCES
Gwinnett County, a suburb of Atlanta, Georgia, has started
a public education and incentive program to encourage
the use of water-efficient appliances and reduce water
use. The county developed a water conservation program
that was implemented in 2003 and has been updated and
re-evaluated since. Some of the initiatives implemented
include:
• Residential Toilet Rebate Program: replacing older,
less-efficient toilets with approved low-flow toilets
• Conservation Pricing
• Conservation Kits
• Outdoor Water Schedule
• Leak Detection
• Residential Water Audits
• Commercial Water Audits
• Education/Public Outreach
• Reclaimed Water
• Advertisements
http://www.gwinnettcounty.com/portal/gwinnett/
Departmen ts/Public Utilities/Wa terConserva tion
Strategies for Engaging the
Community
1 Work with the community. Outreach and education
to community members about the energy and water
efficiency strategies that are being implemented at a
local water and/or wastewater facility encourages citi-
zens to participate in water conservation measures that
will ultimately lead to energy savings. The community
can be reached through a variety of ways, including:
electric utility bills and mailings, through demonstra-
tion projects (demonstrating the water and cost savings
associated with implementing certain measures), or
through local government agencies.
The Santa Clara Valley Water District, a
drinking water utility serving 1.8 million
residents in the semi-arid region around San Jose,
California, works closely with its customers to
conserve water. In addition to providing incentives in
the form of rebates to households and businesses that
purchase water-efficient appliances and equipment,
the district offers a free Water Wise House Call
Program in which a water conservation expert comes
to a home, calculates its water use, teaches residents
how to read their water meter, surveys the irrigation
system, and demonstrates simple ways to save water
both inside and outside of the home. The district
performed more than 1,500 of these house calls in
2009. Through its water conservation and water recy-
cling programs, the water district has saved approxi-
mately $347 million over 16 years, equivalent to the
annual electricity use of 412,000 average California
households (SCVWD, 2011).
1 Participate in national programs. Local govern-
ments may participate in EPA's ENERGY STAR and
WaterSense programs by promoting the use of prod-
ucts within the community that are certified by those
programs. Water and wastewater facilities can also
become ENERGY STAR Partners and participate in the
ENERGY STAR National Building Competition, EPA's
annual competition among commercial buildings to
reduce energy use and avoid climate change. For more
information, visit: http://www.energystar.gov/index.
cfm?fuseaction=buildingcontest.index.
In 2012, the City of Atlanta's Department
of Watershed Management entered the
Hemphill Water Treatment Plant in ENERGY STAR's
National Building Competition: Battle of the
Buildings. The contest pits more than 3,000 commer-
cial buildings from all 50 states against each other to
see which building can save the most energy
compared with its baseline benchmarking score.
With the installation of high-efficiency lighting, a
variable-speed finished water pumping station, and
careful monitoring of plant operations to minimize
waste, the Hemphill plant reduced its energy load by
36 percent at the competition's mid-point, November
2012, which could equate to as much as $790,000 in
savings and more than 9,200 metric tons of CO2
equivalent, comparable to the annual emissions of
1,900 cars (City of Atlanta, Department of Watershed
Management, 2012; U.S. EPA, 2012a).
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
6. STRATEGIES
23
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1 Implement demonstration projects. States have used
local facilities to demonstrate the potential for water
conservation and energy efficiency at a water utility.
Documenting energy efficiency projects and their
results can provide the data and publicity needed to
develop larger initiatives, promote new technologies
and help get them to market, and sometimes even
encourage local economic development.
The City of Bartlett, Tennessee, partici-
pated in a demonstration program
funded by the Tennessee Valley Authority and the
American Public Power Association to advance the
use of new optical probes8 for dissolved oxygen in
the aeration process at the city's wastewater treat-
ment plant. Since completing the project the
facility has achieved annual cost savings of nearly
$9,200, reducing its aeration energy bill by
22 percent (U.S. EPA 2010a).
EPA'S CLEAN ENERGY FINANCING DECISION GUIDE
AND TOOL
EPA's State and Local Climate and Energy Program has
developed a decision tool and a guide to help state
and local governments find and choose clean energy
financing programs.
The guide, available at: http://epa.gov/statelocalclimate/
state/activities/guide.html, covers financing strategies
for energy efficiency and renewables, and can be used to
develop financing programs or to finance improvements
to government-owned facilities.
The tool, available at: http://epa.gov/statelocalclimate/
state/activities/tool.html, helps state and local
government staff identify clean energy financing
programs suited to their target market and available
resources.
8 Optical probes measure changes in light emitted by a luminescent or
fluorescent chemical and use this information to calculate the concentration of
dissolved oxygen. They are more accurate and reliable than older technologies,
and can be incorporated in automated systems that save energy by running
aeration equipment only when necessary.
7 INVESTMENT AND
FINANCING OPPORTUNITIES
This section provides information on the costs of
energy efficiency projects at water and wastewater
facilities, along with opportunities for financing and
funding these costs. Financing generally involves an
assumption of future repayment, while opportunities
for grants and other funding vehicles do not.
Investment
Many of the projects that make a water or wastewater
treatment facility more energy efficient through infra-
structure improvements require significant up-front
investment. The following costs must be considered
when deciding which strategy would work best for
a facility:
1 Design. Hiring a firm to design an upgrade can be
a costly up-front investment that may need to occur
before the funding is fully in place.
1 Equipment. Purchasing new pumps or aerators will be
a significant portion of the cost for an upgrade.
1 Controls. Energy efficiency can be improved through
an upgrade of the control system, such as a SCADA
system. These costs may include more than just the
cost of the control panel itself, and can include wiring
and labor costs.
1 Renovation. Undertaking significant renovations can
be costly. Labor and machinery need to be considered
when estimating costs of upgrades.
1 Training. New equipment requires additional training
on operations and maintenance.
1 Water efficiency programs. If a water/wastewater
facility decides to begin a community-wide water
efficiency program, the costs for labor, communica-
tion materials, water-efficient appliances, and other
program costs must be considered.
24
7. INVESTMENT AND FINANCING
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CASH FLOW OPPORTUNITY CALCULATOR
The ENERGY STAR Cash Flow Opportunity Calculator
is a decision-making tool that can be used to influence
timing of energy-efficient product purchases. The tool
can be used to determine:
• The quantity of energy-efficient equipment that
can be purchased and financed using anticipated
savings;
• Whether it is most cost-effective for the purchase to
be financed now, or to be paid with future operating
funds; and
• The cost of delay: whether money is being lost while
waiting for a lower interest rate.
www.energystar.gov/ia/business/cfo_calculator.xls
Financing
There are several different options for a water or
wastewater facility when it comes to financing an
energy efficiency project. Local governments may be
able to use energy cost savings from low-cost energy
efficiency measures to help pay for future higher-
cost upgrades. There are also a variety of financial
vehicles and funding sources available for facilities to
pursue, depending on how much money is needed
and the circumstances at the facility. To explore the
options, a facility can use a tool such as the Financing
Alternatives Comparison Tool (see the text box below)
to determine the best option for that facility.
FINANCING ALTERNATIVES COMPARISON TOOL (FACT)
Developed by EPA, FACT is a financial analysis tool that
helps utilities and local officials to identify the most
cost effective methods to fund a water or drinking
water management project. The tool incorporates
financing, regulatory, and other important costs to
compare multiple financing options for a specific water
infrastructure project.
FACT is available at: http://water.epa.gov/grants_
funding/cwsrf/fact. cfm
FINANCIAL VEHICLES
Many financial vehicles are available to help local water
and wastewater facilities implement energy-efficient
strategies, including:
Energy performance contracts. An energy
performance contract is an arrangement with an
energy service company (ESCO) or energy service
provider that allows a local government to finance
energy-saving capital improvements—usually over
a 7- to 15-year term—with no initial capital invest-
ment, by using money saved through reduced electric
utility expenditures. Energy performance contracts
bundle energy-saving investments (e.g., energy audits,
design and specification of new equipment, ongoing
maintenance, measurement and verification of product
performance, indoor air quality management, and
personnel training) and typically offer financing
(Zobler and Hatcher, 2008).
An ESCO often provides a guarantee that energy cost
savings will meet or exceed annual payments covering
all activity costs. Such guaranteed savings agreements
are the most common type of performance contract
in the public sector.9 If the savings do not occur, the
ESCO pays the difference. Some performance contracts
include a reserve fund to cover potential shortfalls,
while others provide security enhancements in the
form of performance bonds or letters of credit. In some
instances, performance insurance may be available
(Zobler and Hatcher, 2008).
As mentioned above, ESCOs often offer financing as
part of the performance contract. However, because
ESCOs are private sector firms that typically borrow
at taxable, commercial rates, it is often possible for a
public sector entity to secure better financing arrange-
ments by taking advantage of lower, tax-exempt
interest rates available to government entities (U.S.
EPA, 2003).
Lease-purchase agreements. A tax-exempt lease-
purchase agreement (also known as a municipal lease)
allows public entities to finance purchases and instal-
lation over long-term periods using operating budget
dollars rather than capital budget dollars.
9 Another type of agreement is an "own-operate" agreement, in which the
ESCO maintains ownership of the facility and setts back its "output" to the
government agency
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7. INVESTMENT AND FINANCING
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Lease-purchase agreements typically include "non-
appropriation" language that limits obligations to the
current operating budget period. If a local govern-
ment decides not to appropriate funds for any year
throughout the term, the equipment is returned to
the lessor and the agreement is terminated. Because
of this non-appropriation language, lease-purchase
agreements typically do not constitute debt. Under this
type of agreement, a local government makes monthly
payments to a lessor (often a financial institution) and
assumes ownership of the equipment at the end of the
lease term, which commonly extends no further than
the expected life of the equipment. These payments,
which are often less than or equal to the anticipated
savings produced by the energy efficiency improve-
ments, include added interest. The interest rates that
a local government pays under these agreements are
typically lower than the rates under a common lease
agreement because a public entity's payments on
interest are exempt from federal income tax, meaning
the lessor can offer reduced rates (U.S. EPA, 2004).
Unlike bonds, initiating a tax-exempt lease-purchase
agreement does not require voter referendum to
approve debt, a process that can delay energy efficiency
improvements. Tax-exempt lease-purchase agreements
typically require only internal approval and an attor-
ney's letter, a process that can often take one week (as
opposed to months or years for bonds). Local govern-
ments can expedite the process by adding energy effi-
ciency projects to existing tax-exempt lease-purchase
agreements. Many local governments have master
lease-purchase agreements in place to finance a range
of capital investment projects.
1 Bonds. Bonds are well suited for energy efficiency
projects, because they allow amortization of capital
costs over a multi-year repayment term. Bond holders
can recover their costs through energy savings over the
life of a project.
1 Loans, rebates, other assistance. Some states have
loan programs that can be used to help water and
wastewater facilities finance new upgrades or energy
efficiency activities. These programs often provide
financial assistance to local governments via low-
interest loans that can be paid off using energy cost
savings. In addition, water and wastewater facili-
ties have used rebates or other financial assistance
from other sources to offset the cost of improving
energy efficiency in their facilities. The Database
of State Incentives for Renewables and Efficiency
provides information on state government and
electric utility incentives available in each state at
http://www. dsireusa. org/.
' State revolving loan funds. Revolving loan funds
are capital funds that make loans, collect payments,
and re-lend these payments to fund new projects. The
original capitalization can come from many sources,
including legal settlements, billing corrections, or
extended bond payments after the end of the bond
term. Revolving loan funds typically offer below-
market rates and long-term loans for energy efficiency
or renewable energy projects. EPA provides the capital-
ization grants to the 51 state revolving funds (50 states
plus Puerto Rico). Each individual state is responsible
for choosing and providing direct oversight for the
projects that receive the funds.
EPA's Clean Water State Revolving Fund (CWSRF)
and Drinking Water State Revolving Fund (DWSRF)
make funds available to states to finance infrastructure
improvements in water and wastewater treatment
facilities. The Green Project Reserve, under the
CWSRF and DWSRF, allocates 20 percent of the state
revolving funds for use under one of the following
topics: green infrastructure, water or energy efficiency
improvements, or other environmentally innovative
activities. For more information on the Green Project
Reserve, including case studies, guidance, and other
resources, visit: http://water.epa.gov/grants_funding/
cwsrf/Green-Project-Reserve.cfm.
FUNDING SOURCES
Many funding sources are available to help local water
and wastewater facilities implement energy-efficient
strategies, including:
1 State government programs. Some states have funds
that are targeted at improving energy efficiency in
water and wastewater facilities.
—^-\ The New York State Energy Research and
i Development Authority (NYSERDA) has
an Existing Facilities Program that provides incen-
tives to facilities, including water and wastewater
facilities, to encourage them to purchase and install
more energy-efficient equipment for small-sized
energy projects and equipment replacement projects,
including combined heat and power, electric effi-
ciency, and industrial and process efficiency.
NYSERDA provides up to $30,000 per year to facili-
ties to implement energy-efficient projects that deliver
verifiable annual energy savings (NYSERDA, 2010).
26
7. INVESTMENT AND FINANCING
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1 Electric utility assistance. Some electric utilities
will help cover costs to pay for equipment upgrades
or implementation of water and energy efficiency
programs. A number of local governments have used
rebates or other financial assistance from electric utili-
ties to offset the cost of improving energy efficiency
in their facilities. The Database of State Incentives
for Renewables and Efficiency provides information
on electric utility incentives available in each state at
http://www.dsireusa.org/.
Utilities can also help offset the costs of efficiency
upgrades by performing or funding energy audits. By
lowering the total electricity demand of its consumers,
an electric utility may delay or reduce the need to build
additional sources of power (Brown, 2009).
Fairfield Suisun Sewer District, a waste-
water and stormwater utility in Fairfield,
California, that runs a wastewater treatment plant
processing 14.8 million gallons of wastewater per
day, worked with Pacific Gas & Electric Company
(PG&E) to reduce the facility's electricity use.
PG&E performed an integrated energy audit to
determine which processes could be made more
energy efficient. The sewer district received
$350,000 in incentives to install new equipment at
the plant, saving 1.3 million kWh of electricity
per year.
http://www.pge.com/includes/docs/pdfs/mybusiness/
energysavingsrebates/incentivesbyindustry/cs_fssd.
pdf '
1 Public Benefits Funds. Public benefits funds (PBFs)
are funds that are supported by system benefits charges
applied to electric utility customers' bills. These funds,
which are used to invest in programs that benefit
the public, can provide funding for local govern-
ment energy efficiency projects. A number of local
governments have partnered with state PBF-funded
programs to purchase energy-efficient products or
implement other energy efficiency improvements
(Lung etal., 2011).
1 Federal agency programs. Several federal agencies,
including EPA and the U.S. Department of Agriculture
(USDA) provide funds in the form of grants, low-
interest loans, or incentives to water and wastewater
facilities to upgrade or expand their facility or install
energy-efficient equipment. Each agency funds
different types of projects, depending on the specific
goals of the funding.
The USDA Rural Development Utilities Program
is a public/private partnership that invests billions
of dollars in rural infrastructure to help rural
utilities expand and keep technology up-to-date.
The investments are in the form of grants and
low-interest loans, and are provided to rural areas,
areas that have suffered from an emergency (earth-
quake, chemical spill, etc.), and projects to fund
the pre-development or planning phase of projects.
These funds are directed toward drinking water,
sanitary sewer, solid waste, and storm drainage
facilities in rural areas and in cities and towns with
populations of 10,000 or less (U.S. Department of
Agriculture, 2011).
For more information, visit: http://www.rurdev.
usda.gov/Utilities_LP.html.
• Rate restructuring for water conservation. Water
and wastewater facilities often try to keep the rates
to the consumers as low as possible, but can increase
rates to end users in order to fund upgrades or expan-
sions to the plant that could include energy-efficient
equipment. A different rate structure could also be
adopted to encourage water conservation and increase
revenue for the facility. There are several different rate
structures that can be used for water conservation
(Vickers, 2001):
>• Uniform rates: All customers are charged the same
rate regardless of consumption.
>• Inverted (inclining) block rates: Rates increase
with water consumption.
>• Seasonal rates: Rates vary during different periods
of the year, typically increased in summer months
to discourage excessive irrigation.
>• Marginal cost rates: Rates are based on the cost of
providing the next incremental volume. A slight
increase in rates will deter excessive water use.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
7. INVESTMENT AND FINANCING
27
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8. FEDERAL, STATE,
AND OTHER PROGRAM
RESOURCES
Local governments can obtain information on
energy efficiency strategies in water and wastewater
facilities through a number of federal, state, and
other programs.
Federal Programs
ENERGY STAR Water and Wastewater. ENERGY
STAR for Wastewater Plants and Drinking Water
Systems provides a variety of resources to help water
and wastewater facilities save energy, including guide-
lines for energy management, EPAs Portfolio Manager
tool for measuring and tracking energy use, and online
training sessions on energy efficiency topics. The
ENERGY STAR Resource Guide for Improving Energy
Efficiency and Reducing Costs in the Drinking Water
Supply Industry provides case studies, links to key
resources, and a list of sources on specific topics that
facilities can turn to for further assistance.
Websites: http://www.energystar.gov/waterwastewater
(ENERGY STAR for Wastewater Plants and Drinking
Water Systems)
http:/'/www. energystar.gov/index. cfm ?c=business.
bus_internet_presentations (ENERGY STAR Online
Training Sessions)
http://escholarship. org/uc/item/6bg9f6tk (ENERGY
STAR Resource Guide for Improving Energy Efficiency
and Reducing Costs in the Drinking Water Supply
Industry)
ENERGY STAR Green Buildings and Energy
Efficiency. While not targeted specifically to water and
wastewater facilities, the resources provided here may
be useful for facilities interested in opportunities to
improve energy efficiency and sustainability in their
buildings.
Website: http:/7www. energystar.gov/index.
cfm?c=green_bmldings.green_bmldings_index
U.S. EPA Office of Water, Energy Efficiency for Water
and Wastewater Utilities. This website provides tools
and guidance for determining energy use, reducing
energy use and costs, renewable energy options, and
presentations from a webinar series on energy effi-
ciency for water and wastewater utilities.
Website: http:/'/water, epa.gov/infrastructure/sustain/
energyefficiency. cfm
U.S. EPA Combined Heat and Power (CHP)
Partnership. The CHP Partnership is a voluntary
program seeking to reduce the environmental impact
of power generation by promoting the use of CHP. The
partnership works closely with energy users, the CHP
industry, state and local governments, and other clean
energy stakeholders to facilitate the development of
new projects and to promote their environmental and
economic benefits.
Website: http:/7www. epa.gov/chp/
U.S. EPA Green Power Partnership. The EPA Green
Power Partnership is a voluntary climate protection
program that creates demand for electricity produced
from renewable energy sources. Local govern-
ment partners earn publicity and recognition, and
are ensured of the credibility of their green power
purchases. In addition, partners can receive EPA advice
for identifying green power products and informa-
tion on purchasing strategies. EPA also provides tools
and resources that offer information on green power
providers and calculate the environmental benefits
of green power purchases. Through the Green Power
Communities initiative, the Partnership recognizes
cities, towns, and villages where local governments and
their businesses and residents collectively purchase
quantities of green power that meet EPA-determined
requirements. To get started, the community's local
government first becomes an EPA Green Power
Partner and takes the lead with EPA on beginning a
local community campaign.
Websites: http:/7www. epa.gov/greenpower
(Green Power Partnership)
http://www.epa.gov/greenpower/communities/index.htm
(Green Power Communities)
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8. RESOURCES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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U.S. EPA Landfill Methane Outreach Program
(LMOP). LMOP is a voluntary assistance program that
helps reduce GHGs from landfills by encouraging the
recovery and use of landfill gas as an energy resource.
LMOP forms partnerships with communities, local
governments, utilities, power marketers, states, project
developers, and non-profit organizations to overcome
barriers to project development by helping them assess
project feasibility, find financing, and market the
benefits of project development to the community. The
program offers technical assistance, guidance materials,
and software to assess a potential project's economic
feasibility; assistance in creating partnerships and
identifying financing; materials to help educate the
community and the local media about the benefits of
landfill gas energy; and networking opportunities with
peers and landfill gas energy experts to enable commu-
nities to share challenges and successes.
Website: http://www. epa.gov/lmop
U.S. EPA Wastewater Management Website. This
website provides links to resources for wastewater
facilities, including information about operations,
stormwater management, renewable energy, asset
management, and more.
Website: http://water.epa.gov/polwaste/wastewater/
index.cfm
U.S. EPA WaterSense Program. This partnership
program promotes water efficiency through decreasing
indoor and outdoor non-agricultural water use,
enhancing the market for water-efficient products,
encouraging innovation, and establishing water effi-
ciency standards.
Website: http://www. epa.gov/WaterSense/index.html
U.S. EPA State and Local Climate and Energy
Program. This program helps state, local, and tribal
governments achieve their climate change and clean
energy goals by providing technical assistance,
analytical tools, and outreach support. It includes two
programs:
The Local Climate and Energy Program helps local
and tribal governments meet multiple sustain-
ability goals with cost-effective climate change
mitigation and clean energy strategies. EPA
provides local and tribal governments with peer
exchange training opportunities along with plan-
ning, policy, technical, and analytical information
that support reduction of GHG emissions.
The State Climate and Energy Program helps states
develop policies and programs that can reduce
GHG emissions, lower energy costs, improve
air quality and public health, and help achieve
economic development goals. EPA provides states
with and advises them on proven, cost-effective
best practices, peer exchange opportunities, and
analytical tools.
Website: http://www. epa.gov/statelocalclimate/
State Programs
Some states have developed programs that promote
energy efficiency strategies in water and wastewater
facilities. Local governments can look to these
programs for information resources on the benefits
and applicability of energy efficiency strategies, as
well as information on available financial assistance.
California Energy Commission: Energy Water
Connection. The California Energy Commission's
Process Energy Office provides resources to help water
professionals control energy costs, including detailed
information on proven methods and technologies;
articles, fact sheets, and reports; and more.
Website: http://www.energy.ca.gov/process/water/
index.html
Efficiency Vermont. This program, operated by a non-
profit organization under appointment by the Vermont
Public Service Board, provides rebates to water and
wastewater facilities for installing a wide range of new,
energy-efficient equipment, and can provide custom
rebates and technical assistance for technologies
or projects not listed on its standard rebate forms.
Efficiency Vermont can also install recording meters
to help water and wastewater facilities track energy use
and cost savings.
Website: http://www. efficiencyvermont. com/for_my_
business/solutions_for_me/water_and_wastewater/
general_i nfo/o vervi e w. aspx
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8. RESOURCES
29
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1 Massachusetts Department of Environmental
Protection (MassDEP). MassDEP supports energy
efficiency pilot projects in water and wastewater facili-
ties, sponsors an energy leaders roundtable to help
foster greater participation among drinking water and
wastewater treatment facilities in reducing energy
costs, and provides information resources such as fact
sheets and reports.
Website: http://www. mass.gov/dep/water/priorities/
brpere.htm
New York State Energy Research and Development
Authority (NYSERDA). Through research, demon-
stration, outreach, and cost-shared technical assistance
programs, NYSERDA encourages municipalities in
New York State to adopt commercially available and
innovative technologies that improve the energy effi-
ciency and economics of their water and wastewater
treatment facilities, while meeting or exceeding regula-
tory requirements and reducing the facilities' overall
environmental impact.
Website: http://www. nyserda. ny.gov/BusinessAreas/
Energy-Efficiency-and-Renewable-Programs/Commer-
cial-and-Industrial/Sectors/Municipal-Water-and-
Wastewater-Facilities. aspx
Oregon Energy Trust. The non-profit Oregon Energy
Trust has helped a number of Oregon water and waste-
water facilities realize savings of millions of dollars
or more annually by implementing hydroelectric
and biopower energy generation systems, improving
mechanical processes, making solar electric installa-
tions, upgrading lighting and lighting controls, and
more. The organization offers cash incentives and tech-
nical assistance, including a no-cost system optimiza-
tion study, to water and wastewater facilities.
Website: http://energytrust.org/industrial-and-ag/
incentives/water-treatment/
• Texas Water Development Board. The Texas Water
Development Board offers information on State
Revolving Funds and other financing opportunities
for water and wastewater facilities in Texas, including
information about interest rates and the intended use
plan.
Website: http://www. twdb.state. tx. us/financial/
programs/
Wisconsin Focus on Energy. Wisconsin's Focus on
Energy service offers a one-day training course to
officials at water and wastewater facilities. The course is
designed to show participants how to identify practical
ways to reduce energy use and operating costs, from
installing energy-efficient pumps and variable-speed
drives to adopting energy-saving best practices, modi-
fying process operations, and using renewable energy.
Website: http://www.focusonenergy. com/
learning-center'/lousiness/saving-energy-business/
water-wastewater-industry-energy-best-practice
Other Programs
A number of non-governmental organizations provide
energy efficiency resources and assistance to municipal
water and wastewater facilities.
Alliance for Water Efficiency. The Alliance for Water
Efficiency is a stakeholder-based non-profit organiza-
tion dedicated to the efficient and sustainable use
of water. It serves as an advocate for water-efficient
products and programs, and provides information and
assistance on water conservation efforts.
Website: http://www. allianceforwaterefficiency. org/
Alliance to Save Energy (ASE). ASE is a non-profit
organization that promotes energy efficiency through
research, education, and advocacy. It works with busi-
nesses, governments, and environmental and consumer
leaders to encourage the use of energy-efficient prac-
tices as a means to reduce water and energy use, avoid
GHG emissions, and save money. ASE established
the Watergy program (http://watergy.org) to address
the strong connection between water and energy;
the program offers a tool kit for municipalities that
includes training videos (e.g., how to conduct audits
and detect leaks), manuals, case studies, best practice
guides, and resource documents.
Website: http://www.ase.org/
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8. RESOURCES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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American Council for an Energy-Efficient Economy
(ACEEE). ACEEE is a non-profit organization that
acts as a catalyst to advance energy efficiency policies,
programs, technologies, investments, and behaviors.
It works collaboratively with businesses, government
officials, public interest groups, and other organizations
to carry out its mission. ACEEE provides an online
toolkit for improving energy efficiency in water and
wastewater treatment (available at: http:/'/www.aceee.
org/sector/local-policy/toolkit/water), and has a data-
base of over 450 water-energy programs, available at:
http://aceee. org/w-e-programs.
In 2012, ACEEE and the Alliance for Water Efficiency
launched a series of awards to recognize exceptional
efficiency programs that save both water and energy;
information is available at: http://www.aceee.org/
press/2013/01/12-programs-awarded-saving-both-
wate.
Website: http://www.aceee.org
American Water Works Association (AWWA).
AWWAs mission is to unite the water community to
protect public health and to provide safe and sufficient
water for all. Its members share knowledge on water
resource development, water and wastewater treatment
technology, water storage and distribution, and facility
management and operations. AWWA has published
a guide to Energy Efficiency Best Practices for North
American Drinking Water Utilities, available at: http://
www. waterrf. org/PublicReportLibrary/4223.pdf.
Website: http://www.awwa.org
Consortium for Energy Efficiency (CEE). The GEE
National Municipal Water and Wastewater Facility
Initiative (http://library.ceel.org/content/initiative-
description-cee-national-municipal-water-and-waste-
water-facility-initiative) endeavors to increase the
demand for energy efficiency in water and wastewater
treatment and distribution. The initiative encourages
suppliers of products and services to adopt energy
efficiency as a standard industry practice.
Website: http://www.ceel.org/
Imagine H2O. Imagine H2O is a non-profit organiza-
tion that hosts prize competitions for water efficiency,
energy efficiency, and wastewater innovations. The
organization helps innovators identify problems that
have social impact and major commercial market
opportunities, chooses the most promising plans, and
brings together leaders in water business, government,
and social enterprise to help contestants turn their
ideas into self-funding, high-impact solutions.
Website: http://imagineh2o. com/
National Association of Clean Water Agencies
(NACWA). NACWA provides policy leadership
and technical expertise in protecting water quality.
Members include publicly owned wastewater treat-
ment agencies, wastewater collection systems, and
stormwater management agencies ranging in size from
metropolitan and county agencies to small towns and
communities.
Website: http://www.nacwa.org/
Water Environment Federation (WEE). WEF and
its members research and publish information on
wastewater treatment and water quality protection
and provide technical expertise and training on issues
including wastewater collection, treatment, reuse,
and operations; residuals and facility management;
sustainability; and emerging water quality issues such
as microconstituents. WEF has published a guide to
energy conservation in water and wastewater facilities,
as well as a road map to reaching energy neutrality (net
zero) for the water sector, available at: http://www.e-
wef. org/Default. aspx?Tab!d= 192&productid=5308 and
http:/7www. wef. org/WorkArea/linkit. aspx?Link!dentif
ier=id&ItemID=12884902042&libID=12884902042,
respectively.
Website: http:/7www. wef. org/AWK/
pages_cs. aspx?id=568
Water Environment Research Foundation (WERF).
WERF is a non-profit scientific research organization
dedicated to providing peer-reviewed reports on issues
in wastewater and stormwater.
Website: http:/7www. werf. org/i/ka/Energy/a/ka/
Energy, aspx
Water Innovations Alliance. The Water Innovations
Alliance works to promote federal and state poli-
cies that support development, reduce barriers, and
improve market conditions for the U.S. water technolo-
gies market.
Website: http:/7www. waterinnovations. org/
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
8. RESOURCES
31
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Water Research Foundation. The Water Research
Foundation works with a variety of partners to identify,
prioritize, fund, manage, and communicate scien-
tific research on the treatment and delivery of clean
drinking water.
Website: http://www. waterrf. org/knowledge/energy-
management/em-greenhouse-gases/Pages/default.aspx
9. CASE STUDIES
City of O'Fallon, Missouri
The City of O'Fallon's wastewater treatment plant
participated in a statewide energy management
pilot program that included developing an energy
management plan, implementing an energy efficiency
project, maintaining data, and sharing results. The
facility is currently on track to reduce its energy use by
10 percent by 2014, compared with its baseline energy
use in 2009 (U.S. EPA Region 7, 201 Ib).
PROGRAM INITIATION
In 2009, U.S. EPA Region 7 invited the City of
O'Fallon to join seven other pilot cities in an Energy
Management Initiative for Water and Wastewater
Utilities led by the Missouri Water Utilities Partnership
(MOWUP). The MOWUP initiative, created through
a partnership among EPA Region 7, the Missouri
Department of Natural Resources, the Missouri
University of Science and Technology, and the Siemens
Corporation, required pilot cities to assess current
assets, plan for capital and process improvements, and
develop an energy management plan through partici-
pation in a series of workshops. Prior to participating
in MOWUP, the city's Water and Sewer Department
had no formal mechanism to track its energy use.
During the first phase of the pilot project, MOWUP
partners worked with the city to develop a comprehen-
sive energy management plan to track energy use and
identify areas of improvement. In the second phase of
the pilot, the city worked with plant supervisors and
operators to develop an energy efficiency improvement
project (U.S. EPA Region 7, 201 Ib).
PROFILE: CITY OF O'FALLON, MISSOURI
Area: 22.47 square miles
Population Served by Treatment Plant:
Wastewater Services: 15,350.
Plant Capacity: Wastewater-11.25 MGD
Structure: The governing body for the City
of O'Fallon, Missouri, consists of a mayor and
a 10-member city council. The Public Works
Commission advises the mayor, city council, city
administrator, and Department of Community
Development regarding water and wastewater
systems. The Department of Water and Sewer
oversees the water and wastewater system, and
the Director of Water and Sewer administers the
energy management plan.
Program Scope: The energy management plan
addresses energy conservation and energy
efficiency at the city's wastewater treatment
plant.
Program Creation: The City of O'Fallon Water
and Sewer Energy Management Plan was initiated
in 2009 through an EPA pilot project. The plan
aims to reduce energy use by at least 10%, reduce
costs, and reduce GHG emissions.
Program Results: The facility is on track to
reduce its annual energy use 10% by 2014.
Upgrades with a total cost of $450,000 resulted
in an annual cost savings projected at more than
$53,000. The annual projected GHG reductions
are 292 metric tons of CO2 equivalent.
PROGRAM FEATURES
The MOWUP Energy Management Initiative for Water
and Wastewater Utilities encouraged its participants
to set goals to reduce their energy use. In meeting
their goals, participants use the Plan-Do-Check-Act
approach described in Section 3, Planning and
Implementation Approaches, in order to continuously
improve upon previous actions. The City of O'Fallon
has implemented a number of measures to meet its
reduction target, including:
Energy assessment and documentation. MOWUP
partners conducted an energy audit at the city's waste-
water treatment plant. This process helped the facility
identify its most energy-consuming processes and
pinpoint opportunities to improve efficiency.
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9. CASE STUDIES
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MOWUP Workshops. Representatives from the City
of O'Fallon attended a series of four MOWUP work-
shops over the course of eight months. The workshops
brought together all eight participating pilot cities and
provided participants with information and tools to
develop their energy management plans.
ENERGY STAR Portfolio Manager. While attending
the workshops, the city adopted and now uses EPA's
free online energy management tool, Portfolio
Manager, which allows the wastewater facility to track
and compare its energy use and costs with those of
other wastewater treatment plants across the country.
Aeration equipment upgrades. After discussing a
range of potential projects with facility supervisors and
operators, the City of O'Fallon replaced the blowers
used for aeration at its wastewater treatment plant with
turbo blowers, which are 10-20 percent more efficient
than conventional blowers, are small and quiet, and
require very little maintenance. The city also incorpo-
rated energy-efficient panel diffusers into its aeration
system. The blowers and panel diffusers together intro-
duce very fine air bubbles into the wastewater. This
project cost $450,000 and is expected to save the city
$53,000 per year (U.S. EPA Region 7, 201 Ib). Through
its participation in MOWUP, the city learned about a
number of grant opportunities and ultimately received
a grant of $367,000 from the Missouri Department of
Natural Resources. With the grant funding covering
70 percent of the project's cost, the energy efficiency
improvements will pay for themselves in two years.
Automated meter-reading system. Following the
MOWUP workshops, the City of O'Fallon elected to
replace all of its older water meters at once in order
to better track water use and ensure that consumers
are billed properly. The city chose an energy services
company to manage this $6 million project, which
will install 12,000 new water meters fitted with radio
transmitter technology that can be read remotely.
When complete, the project is expected to increase
the accuracy of the meters from 92.8 percent to
98.5 percent. From operational savings, energy savings,
and increased revenue, this project will pay for itself in
nine years (U.S. EPA Region 7, 201 Ib).
PROGRAM RESULTS
The City of O'Fallon water and wastewater energy
management plan has put its Department of Sewer
and Water on a path to reduce its annual energy use
by 10 percent by 2014, compared with its baseline
consumption in 2009. This plan and its activities will
avoid more than 292 metric tons of GHG emissions
annually, equivalent to the annual emissions from
61 cars (U.S. EPA Region 7, 201 Ib). Participation in the
MOWUP initiative led the department to establish not
only an energy management plan but also a broader
energy policy, which stipulates that the department will
purchase and use energy in the most cost-effective, effi-
cient, and environmentally friendly manner possible.
Under this policy and its commitment to continuous
improvement, the city considers energy efficiency in
any new projects involving damaged or inefficient
equipment. Consequently, it has addressed savings
opportunities in its water system as well, implementing
a leak detection program for its entire water system in
order to save electricity and chemical treatment costs
by reducing unaccounted water loss by 5 percent.
Greater Lawrence Sanitary
District, North Andover,
Massachusetts
The Greater Lawrence Sanitary District participated
in a state-run pilot program for energy management
in drinking water and wastewater facilities. Through
the course of the pilot, its wastewater treatment facility
implemented several energy efficiency and renewable
energy installations, which are projected to decrease its
annual energy costs by nearly $1.5 million and avoid
nearly 5,000 metric tons of CO2 emissions per year,
equivalent to the annual emissions of nearly 1,000 cars
(Mass DEP, Undated).
PROGRAM INITIATION
Beginning in 1995, in response to concerns about its
energy consumption, the Greater Lawrence Sanitary
District (GLSD) facility began to look at ways to reduce
its operational costs. Over the next 10 years, the facility
conducted several targeted energy audits that enabled
facility managers to understand energy consumption,
identify opportunities for energy efficiency improve-
ments, and identify and prioritize projects to reduce
costs and GHG emissions. The facility performed a
lighting retrofit project in 2001, a biosolids upgrade in
2003, and a fine bubble aeration upgrade in 2006.
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
9. CASE STUDIES
33
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Profile: Greater Lawrence Sanitary District
Service Area: 116.32 square miles
Service Area Population: 213,961
Capacity: Design Capacity-52 MGD. Peak
Flow Capacity-135 MGD.
Structure: The Greater Lawrence Sanitary
District is governed by a district commission
consisting of seven voting members and an
eighth non-voting member. The executive
director is appointed by the district
commission and implements decisions made
by the commission. Its energy management
plan is administered by the executive director
Program Scope: The energy management
pilot program, led by the State of
Massachusetts, includes energy efficiency,
energy conservation, and renewable energy
measures.
Program Creation: The State of
Massachusetts initiated the program in 2007
to reduce energy costs and increase overall
energy efficiency at seven drinking water and
seven wastewater facilities.
Program Results: Implemented projects in
the Greater Lawrence Sanitary District are
on track to achieve an annual electricity cost
savings of $1,473,270 and a reduction of
4.9 million kWh. The district projects annual
GHG emissions reductions of 4,840 metric
tons of CO,.
Building on these earlier efforts, the GLSD wastewater
facility joined six other Massachusetts wastewater
treatment plants and seven drinking water facilities
in late 2007 to participate in the first phase of the
Massachusetts Energy Management Pilot for Drinking
Water and Wastewater Treatment Facilities. Led by
the Massachusetts Department of Environmental
Protection (MassDEP) and the Massachusetts
Executive Office of Energy and Environmental Affairs,
this pilot program assists drinking water and waste-
water facilities in saving money while reducing their
energy consumption and GHG emissions. In order to
achieve these goals, the program created a new public/
private partnership that brought together state and
federal agencies, electric and gas utilities, and other
partners to share resources and knowledge (U.S. EPA,
2009a, 2009b).
PROGRAM FEATURES
The goals of the Massachusetts Energy Management
Pilot for Drinking Water and Wastewater Treatment
Facilities were to reduce the amount of energy that
municipal facilities use in treating the water that flows
through their plants by 20 percent, reduce GHG emis-
sions by 20 percent, and ultimately save communities
money (U.S. EPA, 2009a, 2009b). Through its partici-
pation in the energy audits, benchmarking, and energy
management roundtables of the program, the GLSD
facility improved its energy efficiency, lowered energy
costs, and reduced GHG emissions by completing the
following activities:
Energy audit. In 2008, MassDEP worked with
investor-owned utilities to conduct a comprehensive
energy audit of processes in place at the GLSD facility.
The audit quantified the costs and consumption of
electricity, natural gas, and fuel oil, and identified oper-
ational measures, energy conservation measures, and
supply measures for improving energy performance at
the facility. Energy-saving areas included addressing
the lighting, pumping, aeration, anaerobic digestion,
and HVAC systems.
Benchmarking energy needs and performance. The
facility received an EPA ENERGY STAR benchmarking
energy performance score. This score provides a
baseline for the facility and allows it to track its energy
performance against that of similar facilities across
the country.
Assessing renewable and clean energy opportunities.
In 2008, while the energy audit was underway, the
Massachusetts Technology Collaborative Renewable
Energy Trust, a quasi-public development agency
for renewable energy (now the Massachusetts Clean
Energy Center) addressed the pilot program's objec-
tive to assess renewable energy potential by providing
free preliminary screenings for opportunities to
pursue wind power, bioenergy, solar, microturbines,
and other sources of renewable energy at the facility.
The screening identified opportunities for 110 kW
of hydropower capacity and about 200 kW of solar
power. As a result, the facility has installed a 310-kW
solar photovoltaic system and a 100-kW hydroelec-
tric turbine to generate renewable power (U.S. EPA,
2009a, 2009b).
34
9. CASE STUDIES
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Attending energy management round-
tables. Members of the GLSD facility attended five
EPA-sponsored energy management roundtables
during the pilot program, designed to help munici-
palities develop and implement energy management
plans based on the Plan-Do-Check-Act framework
outlined in EPAs Energy Management Guidebook
for Wastewater and Water Utilities. The round-
tables provided technical information on energy
efficiency and offered an environment for plant
operators to discuss the application of EPA assessment
tools, share success stories, and receive advice on
common challenges.
Implementing energy-saving upgrades. Based on its
energy audit and the renewable energy assessment,
and federal assistance from the American Recovery
and Reinvestment Act of 2009, the facility made
several energy-saving upgrades. It installed variable
speed drives in its pumping systems, which cost more
than $1.2 million but returned more than $300,000 in
annual savings. The facility also insulated its digesters
and improved its HVAC and heat recovery systems,
costing $425,000 and saving about $335,000 per year
(see Figure 3 at right). Finally, the facility implemented
improvements to its operational measures, aeration,
plant water pumping system, and lighting. This final set
of improvements cost nearly $970,000, but is expected
to save more than $815,000 annually. Additionally, a
310-kW solar photovoltaic system was installed on the
site, which is generating 433,000 kWh of on-site power
and saving the facility an additional $65,000 per year
(Mass DEP, Undated; U.S. EPA, 2009a, 2009b).
PROGRAM RESULTS
The total cost of the GLSD s upgrades for energy
efficiency and renewable energy was approximately
$4.5 million, which was funded through a combina-
tion of renewable energy grants, State Revolving
Funds, American Recovery and Reinvestment Act
assistance, and energy efficiency incentive funds
from participating electric and gas partners (U.S.
EPA, 2009a, 2009b). The upgrades are projected to
save nearly $1.5 million, or 49 percent of the district's
energy budget, annually, while saving more than
4,900,000 kWh of electricity and generating up to
410 kW of renewable power. The facility's energy effi-
ciency and renewable energy upgrades avoid approxi-
mately 4,840 metric tons of CO2 per year, equivalent
to the annual electricity-related GHG emissions of
603 homes (Mass DEP, Undated).
As part of the GLSD's continuous commitment to
improving energy management at its facility, it is
currently evaluating the technical and financial
feasibility of installing a CHP system to its anaerobic
digesters, and evaluating the option of co-digesting
organic food wastes with wastewater sludge in its
anaerobic digesters.
FIGURE 3. NATURAL GAS USE BY THE
GREATER LAWRENCE SANITARY DISTRICT
DURING THE HEATING SEASON, 2010
AND 2011
Greater Lawrence Sanitary District Natural Gas Use (Heating Season)
=! 3000
•s.
I 2010
I 2011
January February March April
Source: Michael DiBara, Massachusetts Department of
Environmental Protection.
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9. CASE STUDIES
35
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10. ADDITIONAL EXAMPLES AND INFORMATION RESOURCES
Title/Description
Local Examples of Energy Efficiency Measures in Water and Wastewater Facilities
Website
Arizona Water Infrastructure Finance Authority (WIFA) ARRA Green Project
Reserve Case Study, Phoenix, Arizona. In 2009, WIFA received ARRA funding
to support WIFA's efforts to advocate green projects that address water
conservation, energy efficiency, green storm water infrastructure, and
environmentally innovative projects for drinking water and wastewater systems.
ARRA Green Project Reserve funding also helped facilitate an enhancement of
WIFA's traditional technical assistance program offerings and advanced new
green project eligibilities.
http://water.epa.gov/aboutow/eparecovery/
upload/2010_01_26_eparecovery^ARRA_AZ_Case-
Study_FINAL_low-res_10-28-09.pdf
Big Gulch Wastewater Treatment Plant, Washington. The plant required an
upgrade to its aeration system due to increases in biological oxygen demand
(BOD) and total suspended solids (TSS) loadings. The plant installed a fine bubble
diffuser, an automatic blower operation system to control the oxygen levels for
aeration, and an anoxic control system to control the oxygen levels. The energy
savings from the energy efficiency upgrade were 148,900 kWh, or $10,076 annually.
http://water.epa.gov/scitech/wastetech/upload/
Evaluation-of-Energy-Conservation-Measures-for-
Wastewater-Treatment-Facilities.pdf
City of Cleburne, Texas. The city used an ESCO to design conservation measures,
which included installation of a fine bubble aeration system, replacing old
blowers with new energy-efficient blowers, and installing a new automated
control system.
http://www.naesco.org/resources/casestudies/
default.aspx
City of Kingston, New York. The city worked with an ESCO to identify energy
efficiency improvements to its wastewater plant, including increases in the
efficiency of UV disinfection, sludge pump and motor, solids handling, odor
control, digester mixing, and the belt press.
http://www.naesco.org/resources/casestudies/
documents/City%20of%20Kingston%20WWTP%20
Efficiency%20l mprovements.pdf
City of Oswego, New York. The city partnered with an energy performance
contractor to identify a number of improvements to the water and wastewater
treatment systems, including increasing pumping efficiency, an automated
control system that modulates pump speed to maximize efficiency, a new SCADA
system, and lighting system replacement. The plant was able to reduce energy
consumption by more than 25%.
http://www.naesco.org/resources/casestudies/
documents/City%20of%20Oswego%20Energy%20
Performance%20Contract.pdf
Grafton Water and Wastewater Utility, Grafton, Wisconsin. The Grafton
wastewater plant was able to make minor modifications that would not only
increase capacity but also improve effluent quality and reduce energy costs.
Grafton cut annual electricity costs by an estimated 10-12%. During the
first two years of operations, kilowatt-hour consumption dropped by about
112,440 kWh/yr (on average), saving about $9,200 per year.
http://www.ceel.org/!nd/mot-sys/ww/Perfect_
Storm_of_Upgrades.pdf
Gresham, Oregon, Wastewater Treatment Plant. Gresham, Oregon's wastewater
treatment plant is becoming first in the state, and the second on the West Coast,
to feed restaurant grease into its solid waste treatment system.
http://www.oregonlive.com/gresham/index.
ssf/2012/07/greshams_wastewater_treatment.html
Gwinnett County Department of Water Resources, Georgia. This facility installed
a new real-time online energy management software system that allows the
facility to control production plant rates, raw water and high-service pump
scheduling, booster pump station operations, and filling tanks in the water
distribution system.
http://www.derceto.com/Case-studies/Case-
studies/GC
James River Treatment Plant, Virginia Beach, Virginia. This plant conducted a
demonstration study to test whether an integrated fixed-film activated sludge
(IFAS) process could meet tough nutrient limits. Retrofitting the existing tanks
with IFAS was more cost-effective in terms of achievable nitrogen removal
compared with other options.
http://www.ceel.org/ind/mot-sys/ww/Testing_
Nutrient_Removal_Option.pdf
36
10. ADDITIONAL RESOURCES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description
Kent County Department of Public Works, Delaware. This 16-MGD wastewater
treatment plant implemented an automatically controlled aeration system to
save 50% of its energy requirements in the aeration system. Additionally, the
facility installed a wind turbine to generate on-site energy.
Website
http://www.rivernetwork.org/sites/default/files/
EnsureSustainable.PDF
Lake Bradford Road Water Reclamation Facility, Tallahassee, Florida. This
reclamation facility upgraded to a membrane bioreactor, a high-energy-demand
system. In turn, the facility implemented measures to reduce the facility's overall
energy use by 20% while still meeting high-quality effluent requirements.
http://www.ceel.org/ind/mot-sys/ww/Energy_
Efficient_MBR.pdf
Lowell Regional Wastewater District, Massachusetts. This wastewater facility
implemented several energy efficiency projects, such as installing motion
sensors and energy-efficient pumps. The facility also adopted new purchasing
and bidding procedures to specify that new equipment purchased must be
energy efficient.
http://www.rivernetwork.org/sites/default/files/
EnsureSustainable.PDF
Massachusetts Energy Management Pilot Program for Drinking Water and
Wastewater Case Study, Boston, Massachusetts. A total of 14 facilities across
the state, seven wastewater treatment plants and seven drinking water
treatment plants, are taking part in an innovative pilot program designed to
reduce the amount of energy that municipal facilities use in treating the water
that flows through the plant by 20%, reduce GHG emissions by 20%, and save
communities money.
http://water.epa.gov/aboutow/eparecovery/
upload/2010_01_26_eparecovery_ARRA_Mass_
EnergyCasyStudy_low-res_10-28-09.pdf
Moulton Miguel Water District, California. The 48-MGD water treatment and
17-MGD wastewater treatment facility installed new logic controllers to benefit
from lower off-peak electric utility rates, installed variable-frequency drives on
the wastewater system to control pump speed, and specified that all motors used
in new construction are 95-97% efficient. The facility was able to save 20% of the
$1.5 million/year that it was previously spending on electricity.
http://www.energy.ca.gov/process/pubs/moulton.
pdf
Narragansett Bay Commission's Bucking Point Wastewater Treatment Facility,
Rhode Island. The 23.7-MGD facility modified its aeration process control
system to optimize dissolved oxygen levels and minimize energy consumption,
realizing an average 12% reduction in annual energy consumption during the first
three years.
http://water.epa.gov/scitech/wastetech/upload/
Evaluation-of-Energy-Conservation-Measures-for-
Wastewater-Treatment-Facilities.pdf
Oxnard Wastewater Treatment Plant, California. This plant implemented
activated sludge process optimization and automation components to upgrade
its activated sludge aeration process. The reduction in energy consumption from
the upgrade was $27,000 per year, for a five-year payback.
http://water.epa.gov/scitech/wastetech/upload/
Evaluation-of-Energy-Conservation-Measures-for-
Wastewater-Treatment-Facilities.pdf
Sheboygan Regional Wastewater Treatment Plant, Wisconsin. In 2005, this
11.8-MGD facility needed to replace all four of its aeration blowers. The plant
replaced them with two higher horsepower, high-efficiency centrifugal blowers.
The operators discovered that they were having trouble controlling the dissolved
oxygen levels in the evenings and in winter months, so they installed an air flow
control valve. These upgrades saved 6.2% of the facility's annual energy bills, or
more than $25,000.
http://water.epa.gov/scitech/wastetech/upload/
Evaluation-of-Energy-Conservation-Measures-for-
Wastewater-Treatment-Facilities.pdf
Simsbury, Connecticut. Simsbury installed a new SCADA system to replace the
dial-up phone lines that were previously reporting alarms, as well as flow meters
that reported data via manual downloads. The facility was able to reduce its
energy bill significantly by reducing its total amperes used, which was how its
electricity use was being billed by the electric utility.
http://www.wateronline.com/download.mvc/New-
Technology-Enhances-Data-Monitoring-0001
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
10. ADDITIONAL RESOURCES
37
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description
Struthers Water Pollution Control Facility, Ohio. This wastewater treatment plant
received $5.4 million in American Recovery and Reinvestment Act funding from
the Ohio Environmental Protection Agency's Clean Water State Revolving Fund
program for a project that will use biogas to power treatment processes and
reduce the facility's energy footprint.
Website
http://water.epa.gov/grants_funding/cwsrf/upload/
Struthers-Water-Pollution-Control-Facility-Case-
Study-FINALpdf
The Clearwater Cogeneration Wastewater Treatment Plant, California. The
city installed a biosolids heat drying project that dries 110 wet tons per day of
municipal sludge and burns a combination of natural gas and digester gas. The
volume of the biosolids is reduced by 80% and the dried sludge can be land-
applied or used as an organic fuel.
http://www.naesco.org/resources/casestudies/
default.aspx
Turbo Blower Pilot, Fort Myers, Florida. The city pilot-tested a turbo blower in
the aerobic digestion system of its Central Advanced Wastewater Treatment
plant. Initial calculations indicated that the optimum blower for the plant would
cut energy needs by about 40%.
http://www.ceel.org/ind/mot-sys/ww/'Aerate_For_
Less.pdf
Ventura Regional Sanitation District (VRSD), Ventura, California. VRSD needed
a new way to dispose of the biosolids produced by its wastewater treatment
plants. VRSD proposed using methane gas produced from decaying refuse in
a local landfill to fuel a regional biosolids drying system and simultaneously
drive a network of microturbines to generate power for the facility and the local
grid. The system prevents 1 million vehicle trucking-miles per year, avoiding
approximately 1,800 tons of carbon dioxide emissions annually.
http://www.epa.gov/lmop/documents/pdfs/
conf/13th/grant.pdf
Village of Essex Junction Wastewater Treatment Facility, Vermont. The village
installed a combined heat and power facility to generate electricity instead of
flaring the methane generated from sludge digestion. This project provided
$37,000 in savings and a payback period of about seven years.
http://www.rivernetwork.org/sites/default/files/
EnsureSustainable. PDF
Waco Metropolitan Area Regional Sewer System, Texas. This facility upgraded
its aeration system with more fine bubble diffusers and a new automatic control
system. The payback period was only 2.4 years, with an annual energy cost
savings of $423,226 per year.
http://water.epa.gov/scitech/wastetech/upload/
Evaluation-of-Energy-Conservation-Measures-for-
Wastewater-Treatment-Facilities.pdf
Washington Suburban Sanitary Commission Western Branch, Maryland. The
plant had two inefficiently operated natural gas furnaces, and decided to
enhance the system by installing flue gas recirculation to recycle the exhaust
and allow the furnace to run at a lower temperature. This resulted in a $400,000
savings in natural gas consumption per year.
http://water.epa.gov/scitech/wastetech/upload/
Evaluation-of-Energy-Conservation-Measures-for-
Wastewater-Treatment-Facilities.pdf
Information Resources on Energy Efficiency Measures in Water and Wastewater Facilities
Adaptation to Climate Change
Climate Ready Water Utilities Toolbox. Tools from EPA that can be used to
find water utility-specific information on funding opportunities, reports, tools
and models, and workshops and seminars that can help a water utility become
climate ready.
h ttp://www. epa.gov/sa fewa ter/wa tersecurity/
climate/toolbox.html
Climate Resilience Evaluation and Awareness Tool (GREAT). A software tool
developed by EPA to assist water and wastewater facilities in understanding
the potential impacts of climate change on their operations, buildings, and
equipment.
h ttp://wa ter. epa.gov/in fras tructure/wa ter security/
clima te/crea t. cfm
10. ADDITIONAL RESOURCES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description
EPA's Adaptation Strategies Guide for Water Utilities. The EPA Climate Ready
Water Utilities initiative has developed an Adaptation Strategies Guide to assist
drinking water and wastewater utilities in better understanding the climate
change-related impacts they may face in their region and the adaptation
strategies they can use to prepare their system for those impacts. The
information provided in the guide will help jump-start the adaptation planning
process at drinking water and wastewater utilities that may not have begun to
consider climate change impacts or adaptation. It can also be used by any group
or organization that is interested in water sector climate challenges.
Website
http://water.epa.gov/infrastructure/watersecurity/
climate/upload/epa817kll003.pdf
Preparing for Extreme Weather Events: Workshop Planning Tool for the
Water Sector. A tool that provides drinking water and wastewater utilities with
information to conduct workshops focused on planning for extreme event
impacts such as flooding, drought, wildfire, sea level rise, and changes in
snowpack.
http://yosemite.epa.gov/ow/SReg.nsf/description/
TTX_Tool
Water Utilities and Climate Change: A Research Workshop on Effective System
Adaptation. The Water Research Foundation published a report on a workshop
held in South Florida that brought together utility professionals, academics, and
others to review the current role of climate change in utility planning and to
make recommendations for the future. The workshop focused on four South
Florida-based water utilities (Palm Beach County, Broward County, Miami-Dade
County, and Tampa Bay Water) and featured presentations on current climate
change science and climate scenarios for Southeast Florida, adaptation planning,
the variety of adaptations available, and the evaluation of proposed adaptations.
http://www. wa terrf. org/PublicReportLibrary/4228.
pdf
CHP and Renewables
EPACHP Catalog of CHP Technologies. This resource provides an overview
of how CHP systems work and the key concepts of efficiency and power-
to-heat ratios. It also provides information about the cost and performance
characteristics of five commercially available CHP prime movers.
http://www.epa.gov/chp/technologies.html
EPACHP Emissions Calculator. The CHP Emissions Calculator compares the
anticipated carbon dioxide, methane, nitrous oxide, carbon dioxide equivalent,
sulfur dioxide, and nitrogen oxide from a CHP system with those of a separate
heat and power system. The calculator presents estimated emissions reductions
as metric tons of carbon equivalent and emissions from passenger vehicles.
http://www.epa.gov/chp/basic/calculator.html
EPACHP Partnership: Project Development. The Partnership has developed
resources to assist energy users to design, install, and operate CHP systems at
their facilities. This website provides information, tools, and hints on CHP project
development, CHP technologies, and the resources of the CHP Partnership.
http://www.epa.gov/chp/project-development/
index.html
EPA CHP Spark Spread Estimator. The Spark Spread Estimator provides
organizations with a preliminary spark spread screening of CHP economic
viability for a single or multiple end-use sites. The screening includes
assumptions about typical CHP system performance characteristics, fuel prices,
and credit for displaced thermal energy to estimate the operating cost of onsite
power generation at each site.
http://www.epa.gov/chp/partnership/tech_
assistance.html
Going Green: Renewable Energy Options for Water Utilities. A website that gives
links to several resources to help water utilities understand and get involved in
renewable energy projects.
http://water.epa.gov/infrastructure/sustain/
goinggreen. cfm
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
10. ADDITIONAL RESOURCES
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description
Opportunities for and Benefits of Combined Heat and Power at Wastewater
Treatment Facilities: Market Analysis and Lessons from the Field. Information
about CHP in wastewater facilities, including technical information about
the potential for CHP and financial information, such as cost estimates for
installation and cost savings.
Website
http://www.epa.gov/chp/documents/wwtf_
opportunities.pdf
Energy Management and Efficiency
2009-2011 Indiana Energy Management Pilot Factsheets. This collection of
factsheets covers five wastewater and water treatment plants included in the
2009-2011 Indiana Energy Management Pilot program. Each plant's factsheet
includes a summary, success story, data metrics, and list of key improvements.
http://www.epa.gov/r5water/energymanagement/
pdf/IN_Pilot_ WW_ fact_sheets-April_2012.pdf
2009-2011 Indiana Energy Management Pilot Summary Report. This report
presents an overview of the 2009-2011 Indiana Energy Management Pilot
conducted by EPA Region 5 and the Indian Department of Environmental
Managements, and completed by 10 drinking water and wastewater
public utilities (pilot utilities). The report includes a background of the
pilot, documented outcomes, and a presentation of the key findings and
recommendations.
http://www.epa.gov/rSwater/energymanagement/
pdf/IN_Pilot_WW_Summary_report-April_2012.pdf
Addressing the Energy-Water Nexus: A Blueprint for Action and Policy Agenda.
Offers an action plan to link and reduce both energy and water use.
http://www.allianceforwatererficiency.org/
WorkArea/Unkit.aspx?Linkldentifier=id(tltem
ID=S770
American Council for an Energy-Efficient Economy's Water-Energy Program
Database. This database offers basic information on more than 450 existing
programs saving both water and energy from across the United States, Canada
and Australia.
http://aceee.org/w-e-programs
Cutting Your Energy Usage and Costs. EPA's online portal gives information and
resources for best practices, training, and funding for energy efficiency projects.
http://water.epa.gov/infrastructure/sustain/
cutting_ energy, cfm
Determining Your Baseline Energy Use. This site provides links to several
resources for information about performing energy audits at water and
wastewater facilities.
http://water.epa.gov/infrastructure/sustain/
energy_use.cfm
Efficiency Vermont Water & Wastewater Facilities. Efficiency Vermont provides
a number of publications, resources, tips, and case studies to help water and
wastewater facilities save energy. The resources include a comprehensive list of
recommended practices.
http://www.efficiencyvermont.com/for_
my_business/solutions_for_me/water_and_
wastewater/general_info/overview.aspx
Electric Power Research Institute (EPRI) Energy Audit Manual for Water/
Wastewater Facilities. This guide introduces the fundamentals of water and
wastewater systems to marketers and field personnel of electric utilities. The
guide provides a discussion of specific unit processes and their energy/demand
relationships, and explains how the audit data can be used to improve energy
performance.
http://watercenter.montana.edu/training/
savingwater/mod2/downloads/pdf/EPRI_Energy_
Audit_Manual.pdf
Energy and Water for Local Governments. This report from the Local
Government Energy Assurance Planning program helps local governments
understand the energy-water nexus. It discusses how energy is used in the water
sector, how water is used in the energy sector, and covers a range of water and
energy efficiency measures available to local governments.
http://www. energyassurance. us/publica tions/
LEAP_Energy_%26_Water.pdf?attredirects=0
Energy Conservation in Water and Wastewater Treatment Facilities. Published by
the Water Environment Federation, this manual discusses principles and concepts
of energy requirements, potential sources of inefficiency, and recommended
energy conservation measures for specific equipment and processes.
http://www. e-wef. org/Default.
aspx?Tabld=192&productid=5308
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10. ADDITIONAL RESOURCES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description
Energy Efficiency Best Practices for North American Drinking Water Utilities.
This report from the Water Research Foundation and the New York State Energy
Research and Development Authority provides a compendium of best practices
compiled from literature and case studies.
Website
http://www.waterrf.org/PublicReportLibrary/4223.
pdf
Energy Efficiency for Water and Wastewater Utilities. This website from EPA's
Office of Water provides tools and guidance to help water industry professionals
determine energy use, reduce energy use and costs, and learn about renewable
energy opportunities. It also includes presentations from an EPA webinar series
on energy efficiency for water and wastewater utilities.
http://water.epa.gov/infrastructure/sustain/
energyefficiency. cfm
ENERGY STAR for Wastewater Plants and Drinking Water Systems. This ENERGY
STAR website provides resources and tools to help water and wastewater facility
managers reduce energy use.
http://www.energystar.gov/index.cfm?c=water.
was tewa ter_ drinking_ wa ter
ENERGY STAR Resource Guide: Improving Energy Efficiency and Reducing Costs
in the Drinking Water Supply Industry. This guide describes resources for cost-
effectively improving the energy efficiency of U. S. public drinking water facilities.
It includes a large compilation of case studies and cost-effectiveness analysis of
energy efficiency measures.
http://escholarship.org/uc/item/6bg9f6tk
ENERGY STAR Training. Regular ENERGY Star training presentations that are
relevant to water and wastewater utilities are available online.
http://www.energystar.gov/index.cfm?c=business.
bus_internet_presentations
Ensuring a Sustainable Future: An Energy Management Guidebook for
Wastewater and Water Utilities. This guidebook provides facility operators with
a step-by-step plan for implementing energy efficiency projects at a water or
wastewater facility.
http://www.epa.gov/waterinfrastructure/pdfs/
guidebook_si_energymanagement.pdf
EPA Region 1: Energy & Water Infrastructure. This website provides tools
and guidance for water industry professionals related to energy use, energy
efficiency, and renewable energy.
http://www.epa.gov/regionl/eco/
energy/mitigation-efforts-epane.
html#EnergyWaterlnfrastructure
EPA Region 9: The Water-Energy Connection. This website provides educational
information on the relationship between energy savings and water savings. It also
provides resources related to water and energy efficiency practices.
http://www.epa.gov/region9/waterinfrastructure/
waterenergy.html
EPA's Principles for an Energy Water Future. This document describes the nexus
between energy and water as an increasingly important area of focus for EPA.
In Principles for an Energy Water Future, EPA states that government can take a
leadership role in this relationship and lead by example. EPA is proposing these
principles for "government, service providers and ratepayers to foster valuable
collaboration in both the water and energy sectors to work together to meet
water and energy needs both nationally and locally."
http://water.epa. gov/action/upload/Energy_Water_
Principles.pdf
Handbook on Wastewater Management for Local Representatives. NYSERDA's
reference tool for local officials, public administrators, and managers to help
them understand the wastewater system. Includes many resources for utilities
outside of New York as well.
http://www.nywea.org/_default.inc/content/
DECHandbook/DECHandbk(l-27-07).pdf
Massachusetts Energy Management Pilot Program for Drinking Water and
Wastewater Case Study. Reporting on a pilot program for 14 water and
wastewater facilities in Massachusetts, this document gives an overview of the
projects implemented during the program, including funding sources, energy
savings, and results.
http://water.epa.gov/aboutow/eparecovery/
upload/2010_01_26_eparecovery_ARRA_Mass_
EnergyCasyStudy_low-res_10-28-09.pdf
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
10. ADDITIONAL RESOURCES
41
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description
NEMA Premium. A national premium-efficiency electric motor program launched
by the National Electrical Manufacturers Association in 2001. Ten motor
manufacturers participate in the program, which is endorsed by the Consortium
for Energy Efficiency.
Website
http://www.nema.org/premiummotors
Pump System Assessment Tool (PSAT) Tool. The PSAT Tool is a free, online
tool developed by the U.S. Department of Energy that helps users assess
energy-savings opportunities in existing pumping systems. It relies on field
measurements of flow rate, head, and motor power or current to perform the
assessment.
http://wwwl.eere.energy.gov/industry/
bestpractices/software_psat.html
Pump System Improvement Modeling (PSIM) Tool. The PSIM Tool a free,
educational tool focused on helping users better understand the hydraulic
behavior of pumping systems. PSIM calculate the pressure drop and flow
distribution in both straight-path and simple branching or looped pumping
systems.
http://www.pumpsystemsmatter.org/content_
detail.aspx?id=110
Risks and Benefits of Energy Management for Drinking Water Utilities. This
document provides detailed information to water utilities on the trends in energy
resources that might affect energy management.
http://watercenter.montana.edu/training/
savingwater/mod2/downloads/pdf/AWWA_Risks_
Benefits.pdf
River Network Saving Water Saving Energy Blog. The Saving Water, Saving
Energy blog provides news, resources, and analysis on water, energy, and climate
change issues with an emphasis on the connections between water and energy.
http://www.rivernetwork.org/blog/swse
Roadmap to Energy In the Water and Wastewater Industry. This report gives
an overview of the water and wastewater markets and industries, including
stakeholder interests and areas for research and development.
http://files.harc.edu/Sites/GulfCoastCHP/
Publications/RoadmapEnergyWaterlndustry.pdf
Saving Water & Energy in Small Water Systems. This training program offers
four 45-minute presentations and associated resource files specific to small
public water systems. The files cover water conservation, water audit and leak
detection, energy efficiency, and the application of alternative energy sources.
http://watercenter.montana.edu/training/
savingwater/default.htm
Saving Water and Energy: Municipalities and Water Utilities. A tip sheet from the
Watergy program of the Alliance to Save Energy, to help municipalities and water
utilities learn about strategies to reduce water and energy.
http://watergy.org/resources/tipsheets/municipal.
php
Tackling the Nexus: Exemplary Programs that Save Both Energy and Water. This
research report from the American Council for an Energy-Efficient Economy
describes lessons learned by five exemplary programs that provide sustainable,
cost-effective energy and water savings to their customers.
http://aceee.org/research-report/el31
TR-16 Guides for the Design of Wastewater Treatment Works. This document
covers the important elements of wastewater treatment that can be considered
in the design of wastewater treatment works. The content reflects current
practices and advances in technology, nutrient removal, energy efficiency, and
instrumentation.
http://www.neiwpcc.org/trl6guides.asp
Understanding Your Electric Bill. This technical data sheet overviews how
electricity is measured, how electricity is charged, and how to better manage
electricity consumption.
http://water.epa.gov/infrastructure/sustain/upload/
Understanding-Your-Electric-Bill.pdf
Wastewater Management Fact Sheet: Energy Conservation. An EPA fact sheet on
energy conservation strategies for wastewater utilities, including adjusting rate
structure and installing a SCADA system or other upgrades.
http://water.epa.gov/scitech/wastetech/
upload/2008_01_16_mtb_energycon_fasht_final.
pdf
42
10. ADDITIONAL RESOURCES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description Website
Water and Energy: Leveraging Voluntary Programs to Save Both Water and
Energy. This EPA report gives an overview of water use in the United States and
highlights opportunities for residential and commercial customers and power
plants to save water and energy.
Water and Wastewater Energy Best Practice Guidebook. A guidebook developed
by Wisconsin's Focus on Energy program that outlines best practices in planning,
design, operation, and funding/financing.
Watergy: Energy and Water Efficiency in Municipal Water Supply and
Wastewater Treatment. A training manual for the Watergy toolkit that serves as
a guide for implementing energy efficiency strategies at water and wastewater
treatment facilities.
http://www.energystar.gov/ia/partners/
publications/pubdocs/Final%20Report%20Mar%20
2008.pdf
http://watercenter.montana.edu/training/
savingwater/mod2/downloads/pdf/SAIC_Energy_
Best_Practice_Guidebook.pdf
http://www.watergy.org/resources/publications/
watergy.pdf
Financing, Funding, and Incentives
Database of State Incentives for Renewables and Efficiency (DSIRE). This
database lists state incentives and resources for renewable and energy efficiency
projects.
ENERGY STAR Cash Flow Opportunity (CFO) Calculator. The CFO Calculator
helps decision makers determine how much new energy efficiency equipment
can be purchased from the anticipated savings, whether equipment purchases
can be financed now or later, and whether money is being lost by waiting for a
lower interest rate.
EPA Financing Alternatives Comparison Tool (FACT). Allows a water or
wastewater utility to plug in a financial situation and enter financing options to
identify the most cost-effective method to fund a project.
How to Finance Public Sector Energy Efficiency Projects. This document from
the California Energy Commission outlines cost-effectiveness criteria and
financing options for energy-efficient projects in the public sector, including
water and wastewater treatment districts.
How to Hire an Energy Services Company (ESCO). California's handbook for
hiring an ESCO that includes many answers about the types of contracts and
services offered.
List of qualified ESCOs. The Federal Energy Management Program established
the Department of Energy Qualified List of Energy Service Companies in
accordance with the Energy Policy Act of 1992 and 10 CFR 436.
Local Government Energy Assurance Planning (LEAP). The LEAP program, an
initiative under the Recovery Act, provides assistance to participating cities so
they can identify and resolve energy infrastructure problems and more effectively
plan for and communicate during energy emergencies.
Water and Wastewater Facilities RFP Guidance. This guidance from the
Consortium for Energy Efficiency helps water and wastewater utilities learn
how to effectively incorporate energy efficiency improvement projects in their
requests for proposals and requests for qualifications.
h ttp://www. dsireusa. org/
http://www.energystar.gov/! ndex.cfm?c=assess_
value.financial_tools
http://water.epa.gov/grants_funding/cwsrf/fact.
cfm
http://www.energy.ca.gov/reports/efficiency_
handbooks/400-00-001A.PDF
http://www.energy.ca.gov/reports/efficiency_
handbooks/400-00-001D.PDF
http://wwwl.eere.energy.gov/femp/financing/
espcs_qualifiedescos.html
http://www.energyassurance.us/
http://www.ceel.org/ind/mot-sys/ww/rfp/index.
php3
Water and Wastewater Pricing. Articles, reports, case studies, and other http://water.epa.gov/infrastructure/sustain/Water-
information from EPA on pricing at water and wastewater utilities. and-Wastewater-Pricing-lntroduction.cfm
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
10. ADDITIONAL RESOURCES
43
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10 ADDITIONAL EXAMPLES AND INFORMATION RESOURCES (cont.)
Title/Description
Website
Water Conservation and Reuse
Control and Mitigation of Drinking Water Losses in Distribution Systems. This
document provides information on developing a water loss control program at
drinking water utilities.
http://water.epa.gov/type/drink/pws/smallsystems/
upload/Water_Loss_Control_508_FINALDEc.pdf
EPA 2012 Guidelines for Water Reuse. The 2012 reuse guidelines update
and build on EPA's previous reuse guidelines issued in 2004, incorporating
information on water reuse that has been developed following the release of
the 2004 document. In addition to summarizing existing U.S. regulations, the
document includes water reuse practices outside of the United States, case
studies, information on planning for future water reuse systems, and information
on indirect potable reuse and industrial reuse. It also discusses disinfection and
treatment technologies, emerging contaminants, and public involvement and
acceptance.
http://www. wa terreuseguidelines. org/
Other Water and Wastewater Topics
EPA Decentralized MOD Partnership Papers. EPA and 16 partner organizations
have published four papers that highlight how decentralized wastewater
treatment systems can be sustainable and appropriate options for communities
and homeowners. The papers provide information on the benefits and types of
decentralized onsite approaches for collection, treatment, dispersal, and reuse of
wastewater.
http://water.epa.gov/infrastructure/septic/
Decentralized-MOU-Partnership-Products.cfm
EPA's Planning for Sustainability: A Handbook for Water and Wastewater
Utilities. This handbook describes a number of steps utilities can undertake to
enhance their planning processes to ensure that water utilities are sustainably
managed using cost-effective life cycle analysis.
http://water.epa.gov/infrastructure/sustain/upload/
EPA-s-Planning-for-Sustainability-Handbook.pdf
New York State Energy Research and Development Authority (NYSERDA)
Municipal Water & Waste Water Facilities. NYSERDA provides tools, case studies,
funding, workshops, and resources to municipalities in order to helping them
address regulatory pressures to decrease nutrients in wastewater, develop
innovative ways to disinfect water, and optimize performance to improve
efficiency and increase water-and wastewater-treatment capacity.
http://www.nyserda.ny.gov/Energy-Efficiency-and-
Renewable-Programs/Commercial-and-Industrial/
Sectors/Municipal-Water-and-Wastewater-
Facilities.aspx
Sustainability and the Clean Water State Revolving Fund: A Best Practices Guide.
EPA's Office of Wastewater Management developed this Best Practices Guide
to provide an overview of state policies and practices supporting the priorities
outlined in the Clean Water State Revolving Fund Sustainability policy and pilot
projects. This guide is intended for state programs as they consider policies and
initiatives to promote community and water infrastructure
http://water.epa. gov/grants_funding/cwsrf/upload/
CWSRF-Best-Practices-Guide.pdf
Sustainable Infrastructure: Better Management. A Web-based portal that
offers information to water utilities on how to improve their environmental and
operational performance.
http://water.epa.gov/infrastructure/sustain/
sustainable_infrastructure.cfm
44
10. ADDITIONAL RESOURCES
Energy Efficiency in Water and Wastewater Facilities | Local Government Climate and Energy Strategy Series
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11. REFERENCES
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Alliance for Water Efficiency. 2010. AWE Charter
Sponsor Profile: Austin Water. Available: http://www.
allianceforwaterefficiency.org/charter-sponsor-profile-
austin-water.aspx. Accessed 12/18/12.
Alliance to Save Energy. 2011. Watergy Toolkit: SSM:
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American Council for an Energy-Efficient Economy
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American Solar Energy Society (ASES). 2008. Defin-
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Austin Water. 2012. Revised Water Use Management
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Brown, M. 2009. "Models for Administering Ratepayer-
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California Energy Commission. 2005. California's
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City of Brattleboro. 2012. Municipal Facili-
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City of Bridgeport. 2012. Energy Improvement
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Decentralized Water Resources Collaborative. 2012.
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Derceto. 2010. The Greening of Gwinnett County. Avail-
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