Sumpter
Natural gas power plant in Wayne County, Michigan. 340 MW of nameplate capacity across 4 generators, operated by Wolverine Power Supply Coop.
Also known as Sumpter Generating Facility · EIA plant 7972
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Key facts
- Capacity
- 340 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- July 2002First generator online
- Operator
- Wolverine Power Supply CoopEIA operator ID 20910
- Grid
- MISOBalancing authority MISO
- Price nodes
- 4 MISO nodesResource nodes with prices
- Location
- Wayne County, MI42.1670, −83.5318
- EIA plant ID
- 7972EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Sumpter produces
Free · EIA-923Net generation, 2025
291 GWh
290,873 MWh, final
Capacity factor, 2025
9.8%
2024: 6.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
112.2–398.6
GWh a year. Low 2023, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | 132,134 | Not reported | 6 of 12 |
| 2003 | 49,406 | Not reported | 12 of 12 |
| 2004 | 17,251 | Not reported | 12 of 12 |
| 2005 | 124,702 | Not reported | 12 of 12 |
| 2006 | 48,303 | Not reported | 12 of 12 |
| 2007 | 65,337 | Not reported | 12 of 12 |
| 2008 | 26,242 | Not reported | 12 of 12 |
| 2009 | 2,092 | Not reported | 12 of 12 |
| 2010 | 43,030 | 1.4% | 12 of 12 |
| 2011 | 41,768 | 1.4% | 12 of 12 |
| 2012 | 107,397 | 3.6% | 12 of 12 |
| 2013 | 84,408 | 2.8% | 12 of 12 |
| 2014 | 44,034 | 1.5% | 12 of 12 |
| 2015 | 238,673 | 8.0% | 12 of 12 |
| 2016 | 339,136 | 11.4% | 12 of 12 |
| 2017 | 177,652 | 6.0% | 12 of 12 |
| 2018 | 398,579 | 13.4% | 12 of 12 |
| 2019 | 275,053 | 9.2% | 12 of 12 |
| 2020 | 339,850 | 11.4% | 12 of 12 |
| 2021 | 263,890 | 8.9% | 12 of 12 |
| 2022 | 243,245 | 8.2% | 12 of 12 |
| 2023 | 112,199 | 3.8% | 12 of 12 |
| 2024 | 190,146 | 6.4% | 12 of 12 |
| 2025 | 290,873 | 9.8% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDCO₂, 2025
220,864
US short tons. 2024: 148,204
SO₂, 2025
1
US short tons
NOx, 2025
57
US short tons
CO₂ per MWh, calculated
0.76 t
About 1,519 lb per MWh
4 of 4 EPA units reported CO₂ in 2025 (1, 2, 3, 4), matched to EIA plant 7972 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 85.0 | July 2002 |
| 2 | Natural Gas Fired Combustion Turbine | 85.0 | July 2002 |
| 3 | Natural Gas Fired Combustion Turbine | 85.0 | July 2002 |
| 4 | Natural Gas Fired Combustion Turbine | 85.0 | July 2002 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Wolverine Power Supply Coop as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Sumpter
More plants operated by Wolverine Power Supply Coop
Questions about Sumpter
How much power does Sumpter produce?
Sumpter reported 290,873 MWh (291 GWh) of net generation in 2025, a 9.8% capacity factor on 340 MW of nameplate capacity.
Where is Sumpter?
Sumpter is in Wayne County, Michigan, at 42.1670, −83.5318. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Sumpter?
EIA-860M for August 2026 lists Wolverine Power Supply Coop as the operator (EIA operator ID 20910). The operator is not always the owner.
When did Sumpter start operating?
Its first generator began operating in July 2002, according to EIA-860M.
Does InfraMap have power prices for Sumpter?
Yes. InfraMap has MISO day-ahead and real-time prices at 4 price nodes linked to Sumpter, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page