Consumers Energy 2018 Natural Gas STAR Summary Report Distribution

United States *J\ arHft !™.,°."men'al NaturalGas(a mAAyciiuy epa pollution preventer Consumers Energy Joined Natural Gas STAR in 1996 2018 Natural Gas STAR Summary Report Segment: Distribution Since the inception of the program in 1993, domestic Natural Gas STAR partners have eliminated more than 1,634,171,832 thousand cubic feet (Mcf) of methane emissions. 53,387,917 Mcf of methane emissions have been reduced in the Distribution Segment. This report summarizes the voluntary methane emissions reductions achieved by Consumers Energy in the Distribution Segment under the EPA Natural Gas STAR Program. Reductions for Consumers Energy 2018 Cumulative 5,799 Mcf New: 5,799 Mcf Ongoing: 0 Mcf 163,543 Mcf

u 3 "O a) eel a> c 3 C C < 40 30 20 10 Consumers Energy (Annual Reductions) New* Ongoing* "¦H'H (Ti <7) G) (7) (£> CO o o (£> CO r\jr\jr\jrsjrsjrsjrsjrsjrsjrsj Methane Emission Reduction Equivalencies 2018 Cumulative See EPA's Greenhouse Gas Eauivalencies Calculator for additional eauivalencies and details about the conversion units. (5,799 Mcf) (163,543 Mcf) Metric tons (MT) C02 equivalent 2,784 MTC02e 78,500 MTC02e A C02 emissions from the energy used by this many homes in one year 333 homes 9,401 homes Carbon sequestered from this many acres of U.S. forests in one year 3,275 acres 92,354 acres a Value of methane saved (at $3 per Mcf) $17,398 $490,630 * "New" reductions refer to reductions realized the first year an activity is implemented. ** "Ongoing" reductions come from activities that are eligible to accrue methane reductions after the first year the activity is implemented. The length of time these activities can continue to accrue reductions or "sunset date" is specified for each activity. Based on data available as of 11 /26/2019 Page 1 of 4

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Consumers Energy Methane Emission Reduction Technologies and Practices
201 8 Reductions in the Distribution Segment for Consumers Energy:
5,799 Mcf
Identify and rehabilitate leaky
distribution pipe: 100.0%
Cumulative Reductions in the Distribution Segment for Consumers
Energy: 1 63,543 Mcf
Identify and rehabilitate leaky
distribution pipe: 100.0%
"Cumulative reductions" are all reductions achieved by Consumers Energy in the Distribution Segment since joining
the program.
Based on data available as of 11 /26/2019
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Summary of Technologies and Practices for the Distribution Segment
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Distribution Segment: Annual Reductions
(Cumulative Reductions: 53,387,91 7 Mcf)
New*
Ongoing*
ro^J-LOLDh^cocriO'— r^Jro^J-LOLDr^cocriO'— r^ro^J-LOLDhvCO
0^0^0^0^0^0^0^0000000000 — — — — — — — — —
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Total Annual Reductions in 201 8 for the Distribution Segment
(2,458,108 Mcf)
89.0%
DI&M at gate stations and surface facilities (89.0%)
Identify and rehabilitate leaky distribution pipe
(4.0%)
Use pipeline pump-down techniques to lower gas
line pressure (2.4%)
Identify and replace high-bleed pneumatic devices
(2.4%)
Other (2.3%)
* "New" reductions refer to reductions realized the first year an activity is implemented.
** "Ongoing" reductions come from activities that are eligible to accrue methane reductions after the first year the
activity is implemented. The length of time these activities can continue to accrue reductions or "sunset date" is
specified for each activity.
Based on data available as of 11 /26/2019
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Top Technologies and Practices for the Distribution Segment
Top 10 Technologies and Practices in the Distribution Segment
Reported by Partners in the Last 5 Years (2014 to 2018)
Rank
Technology/Practice
Reductions (Mcf)
1
DI&M at gate stations and surface facilities
2,661,255
2
Identify and rehabilitate leaky distribution pipe
2,620,500
3
DI&M at surface facilities
469,361
4
Identify and replace high-bleed pneumatic devices
259,837
5
Install excess flow valves
255,438
6
Reduced emissions through third-party damage prevention
140,130
7
Convert to instrument air systems
103,232
8
Improve system design/operation
92,560
9
Inject blowdown gas into low pressure mains or fuel gas system
81,973
10
Use pipeline pump-down techniques to lower gas line pressure
80,500
Notes:
"Top technologies" are those that led to the greatest cumulative, partner-reported, methane reductions over the
specified time period.
Visit the Natural Gas STAR'S Recommended Technologies for more information.
Based on data available as of 11 /26/2019
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