South Oak CreekRetirement planned
Milwaukee County, Wisconsin · EIA plant ID 4041 · Operator: Wisconsin Electric Power Co
1,182 MW planned (Natural Gas Fired Combustion Turbine), first expected Feb 2028 · EIA-860M
×598 MW coal retired since 2020 (latest May 2024)
Nameplate642MWSummer 616 MW
Generators2in service
Net generation2,104GWh12 mo to Aug 2026
Capacity factor39%gas/coal/oil units, summer MW
Heat rate9,797Btu/kWhfossil units, electric fuel, HHV
First online1965Runs as intermediate
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 5,909.8 | — | — |
| 2002 | 5,396.9 | — | — |
| 2003 | 5,950 | 58.9% | 10,853 |
| 2004 | 6,727 | 66.4% | 10,593 |
| 2005 | 5,886.7 | 58.3% | 11,071 |
| 2006 | 5,864.4 | 58.1% | 9,963 |
| 2007 | 5,687.6 | 56.3% | 10,115 |
| 2008 | 5,869.5 | 58.3% | 10,151 |
| 2009 | 4,424.8 | 44.5% | 10,188 |
| 2010 | 4,778.6 | 48.1% | 10,119 |
| 2011 | 5,382.1 | 58.6% | 9,532 |
| 2012 | 4,003.8 | 46.7% | 10,118 |
| 2013 | 4,774 | 54.9% | 10,339 |
| 2014 | 4,327.2 | 49.8% | 10,097 |
| 2015 | 5,178.3 | 59.5% | 10,364 |
| 2016 | 3,853.8 | 44.1% | 10,142 |
| 2017 | 4,717.7 | 54.1% | 10,613 |
| 2018 | 4,767.2 | 49.5% | 10,588 |
| 2019 | 3,806 | 39.6% | 10,528 |
| 2020 | 3,035.5 | 31.1% | 10,343 |
| 2021 | 4,475.8 | 46.0% | 10,383 |
| 2022 | 3,417.9 | 35.2% | 10,633 |
| 2023 | 3,581.7 | 36.8% | 10,557 |
| 2024 | 2,249.6 | 32.8% | 10,695 |
| 2025 | 2,101.5 | 38.9% | 10,185 |
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 |
|---|---|---|---|---|---|---|---|---|
| 7 | Conventional Steam Coal | ST | 317.6 | 306.5 | Mar 1965 | Operating · retirement planned | Dec 2027 | coming soon |
| 8 | Conventional Steam Coal | ST | 324 | 309.5 | Oct 1967 | Operating · retirement planned | Dec 2027 | coming soon |
| 11 | Natural Gas Fired Combustion Turbine | GT | 236.3 | 227.6 | planned Feb 2028 | Planned | — | coming soon |
| 12 | Natural Gas Fired Combustion Turbine | GT | 236.3 | 227.6 | planned Feb 2028 | Planned | — | coming soon |
| 13 | Natural Gas Fired Combustion Turbine | GT | 236.3 | 227.6 | planned Feb 2028 | Planned | — | coming soon |
| 14 | Natural Gas Fired Combustion Turbine | GT | 236.3 | 227.6 | planned Feb 2028 | Planned | — | coming soon |
| 15 | Natural Gas Fired Combustion Turbine | GT | 236.3 | 227.6 | planned Feb 2028 | Planned | — | coming soon |
| 5 | Conventional Steam Coal | ST | 299.2 | 242.2 | Dec 1959 | Retired May 2024 | — | coming soon |
| 6 | Conventional Steam Coal | ST | 299.2 | 253.8 | Dec 1961 | Retired May 2024 | — | coming soon |
| 9 | Natural Gas Fired Combustion Turbine | GT | 19.6 | 18 | Dec 1968 | Retired Sep 2008 | — | coming soon |
Owner / operator
Operator: Wisconsin Electric Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Wisconsin Electric Power Co | 100.0% | 642 MW |
Nearby plants
Within 80 km.
| Elm Road Generating Station | 1,403 MW | 0.5 km |
| MMSD South Shore Wastewater | 5 MW | 4.7 km |
| Root River Solar WI, LLC | — | 9.4 km |
| City of Milwaukee- Airport Expansion | — | 10.5 km |
| IKEA Oak Creek Rooftop PV System | 1 MW | 10.7 km |
| Adams Road Solar | 4 MW | 10.8 km |