Sumpter
Wayne County, Michigan · EIA plant ID 7972 · Operator: Wolverine Power Supply Coop
Nameplate340MWSummer 300 MW
Generators4in service
Net generation291GWh12 mo to Dec 2025
Capacity factor11%gas/coal/oil units, summer MW
Heat rate11,902Btu/kWhfossil units, electric fuel, HHV
First online2002Runs as peaking
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2002 | 132.1 | 10.1% | 12,917 |
| 2003 | 49.4 | 1.9% | 12,657 |
| 2004 | 17.3 | 0.7% | 13,937 |
| 2005 | 124.7 | 4.8% | 13,079 |
| 2006 | 48.3 | 1.9% | 13,200 |
| 2007 | 65.3 | 2.2% | 12,955 |
| 2008 | 26.2 | 0.9% | 12,649 |
| 2009 | 2.1 | 0.1% | 22,775 |
| 2010 | 43 | 1.6% | 14,078 |
| 2011 | 41.8 | 1.6% | 14,793 |
| 2012 | 107.4 | 4.0% | 13,302 |
| 2013 | 84.4 | 3.1% | 12,977 |
| 2014 | 44 | 1.6% | 13,110 |
| 2015 | 238.7 | 8.8% | 12,326 |
| 2016 | 339.1 | 12.5% | 12,804 |
| 2017 | 177.7 | 6.6% | 12,754 |
| 2018 | 398.6 | 14.8% | 12,698 |
| 2019 | 275.1 | 10.2% | 13,025 |
| 2020 | 339.9 | 12.6% | 13,215 |
| 2021 | 263.9 | 9.8% | 13,089 |
| 2022 | 243.2 | 9.0% | 13,061 |
| 2023 | 112.2 | 4.2% | 13,029 |
| 2024 | 190.1 | 7.0% | 13,462 |
| 2025 | 290.9 | 11.1% | 11,902 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 85 | 73.2 | Jul 2002 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 85 | 76.4 | Jul 2002 | Operating | — | coming soon |
| 3 | Natural Gas Fired Combustion Turbine | GT | 85 | 74.6 | Jul 2002 | Operating | — | coming soon |
| 4 | Natural Gas Fired Combustion Turbine | GT | 85 | 75.3 | Jul 2002 | Operating | — | coming soon |
Owner / operator
Operator: Wolverine Power Supply Coop. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Wolverine Power Supply Coop | 100.0% | 340 MW |
Nearby plants
Within 80 km.
| Sumpter Energy Associates | 11 MW | 7.3 km |
| French Landing Dam | 2 MW | 9.2 km |
| White Tail Solar | 140 MW | 11 km |
| East. Michigan Univ. Heating Plant | 8 MW | 12.1 km |
| Superior | 64 MW | 14.1 km |
| IKEA Canton Rooftop PV System | 1 MW | 19.3 km |