George Johnson
Osceola County, Michigan · EIA plant ID 1877 · Operator: Wolverine Power Supply Coop
Nameplate51MWSummer 52 MW
Generators3in service
Net generation43GWh12 mo to Dec 2025
Capacity factor9%gas/coal/oil units, summer MW
Heat rate11,002Btu/kWhfossil units, electric fuel, HHV
First online1993Runs 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) |
|---|---|---|---|
| 2001 | 37.8 | — | — |
| 2002 | 41.5 | — | — |
| 2003 | 16.2 | 2.6% | 11,089 |
| 2004 | 15 | 2.4% | 11,906 |
| 2005 | 32.9 | 5.6% | 11,711 |
| 2006 | 13.5 | 3.0% | 12,013 |
| 2007 | 32.1 | 7.2% | 11,577 |
| 2008 | 15.8 | 3.5% | 11,787 |
| 2009 | 10.9 | 2.5% | 11,763 |
| 2010 | 20.3 | 4.7% | 12,237 |
| 2011 | 0.3 | 0.1% | — |
| 2012 | 13.4 | 3.1% | 12,994 |
| 2013 | 6.1 | 1.4% | 13,792 |
| 2014 | 7.8 | 1.8% | 12,341 |
| 2015 | 7.9 | 1.8% | 12,307 |
| 2016 | 52.9 | 12.1% | 11,314 |
| 2017 | 30.7 | 7.0% | 11,267 |
| 2018 | 39.9 | 9.2% | 11,034 |
| 2019 | 26.1 | 6.0% | 11,182 |
| 2020 | 20.8 | 4.8% | 12,173 |
| 2021 | 37.1 | 8.5% | 11,038 |
| 2022 | 46 | 10.6% | 10,976 |
| 2023 | 19.1 | 4.4% | 11,291 |
| 2024 | 34 | 7.8% | 11,087 |
| 2025 | 42.7 | 9.4% | 11,002 |
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 |
|---|---|---|---|---|---|---|---|---|
| 10 | Natural Gas Fired Combustion Turbine | GT | 25 | 25.7 | Jun 2000 | Operating | — | coming soon |
| 11 | Petroleum Liquids | IC | 1 | 1 | Sep 1993 | Operating (Standby / backup) | — | coming soon |
| 9 | Natural Gas Fired Combustion Turbine | GT | 25 | 25.1 | Jun 2000 | Operating | — | coming soon |
| 1 | Natural Gas Internal Combustion Engine | IC | 0.7 | 0.7 | Jan 1947 | Retired Jan 2002 | — | coming soon |
| 2 | Natural Gas Internal Combustion Engine | IC | 0.7 | 0.7 | Jan 1948 | Retired Jan 2002 | — | coming soon |
| 3 | Natural Gas Internal Combustion Engine | IC | 1.1 | 1.2 | Jan 1949 | Retired Jan 2002 | — | coming soon |
| 4 | Natural Gas Internal Combustion Engine | IC | 2.5 | 2.5 | Jan 1951 | Retired Jan 2002 | — | coming soon |
| 5 | Natural Gas Internal Combustion Engine | IC | 2.5 | 2.5 | Jan 1951 | Retired Jan 2002 | — | coming soon |
| 6 | Natural Gas Internal Combustion Engine | IC | 2.5 | 2.5 | Jan 1952 | Retired Jan 2002 | — | coming soon |
| 7 | Natural Gas Fired Combustion Turbine | GT | 11 | 10.5 | Jan 1973 | Retired Oct 2005 | — | coming soon |
| 8 | Natural Gas Fired Combustion Turbine | GT | 11 | 10.5 | Jan 1973 | Retired Oct 2005 | — | 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% | 51 MW |
Nearby plants
Within 80 km.
| Cargill Salt Hersey | retired | 5.7 km |
| Rogers | 7 MW | 25.5 km |
| Stoney Corners Wind Farm | 60 MW | 40.3 km |
| Hardy | 32 MW | 42.5 km |
| Viking Energy of McBain | 20 MW | 43.8 km |
| Cadillac Renewable Energy | 44 MW | 47 km |