Directory of Power Plants in Wisconsin
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Lake Hallie | Standard Solar | Chippewa Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Washington Island | Washington Island El Coop, Inc | Washington Island, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.0 MWh | Nov 1945 | Dec 2025 | Distillate Fuel Oil |
| Adams Road Solar | Wisconsin Electric Power Co | Franksville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Cashton | Village of Cashton - (WI) | Cashton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.8 MWh | Jul 1932 | Dec 2025 | Distillate Fuel Oil : 98.3% Natural Gas : 1.7% |
| La Farge | La Farge Municipal Electric Co - (WI) | La Farge, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.0 MWh | Sep 1990 | Dec 2025 | Distillate Fuel Oil |
| Viola | Village of Viola - (WI) | Viola, WI | Midcontinent Independent System Operator, Inc. (MISO) | 15.0 MWh | Dec 2001 | Dec 2025 | Distillate Fuel Oil |
| Grantsburg Diesel | Northwestern Wisconsin Elec Co | Grantsburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 26.5 MWh | Nov 1963 | Dec 2025 | Distillate Fuel Oil |
| Sycamore (WI) | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 28.0 MWh | Nov 1967 | Dec 2025 | Natural Gas |
| Elroy | City of Elroy - (WI) | Elroy, WI | Midcontinent Independent System Operator, Inc. (MISO) | 48.0 MWh | Apr 1973 | Dec 2025 | Distillate Fuel Oil |
| New Lisbon | City of New Lisbon (WI) | New Lisbon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 55.0 MWh | Dec 1965 | Dec 2025 | Distillate Fuel Oil |
| Viola | OneEnergy, Inc. | Webster, WI | Midcontinent Independent System Operator, Inc. (MISO) | 65.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Fennimore | City of Fennimore - (WI) | Fennimore, WI | Midcontinent Independent System Operator, Inc. (MISO) | 75.0 MWh | Jan 1952 | Dec 2025 | Distillate Fuel Oil |
| Luck | OneEnergy, Inc. | Luck, WI | Midcontinent Independent System Operator, Inc. (MISO) | 85.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Nine Springs | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 89.0 MWh | Nov 1964 | Dec 2025 | Natural Gas |
| Beloit Memorial Hospital Power Plant | Beloit Memorial Hospital | Beloit, WI | Midcontinent Independent System Operator, Inc. (MISO) | 147.0 MWh | May 2000 | Dec 2025 | Natural Gas : 99.1% Distillate Fuel Oil : 0.9% |
| Argyle | City of Argyle - (WI) | Argyle, WI | Midcontinent Independent System Operator, Inc. (MISO) | 193.0 MWh | Dec 1928 | Dec 2025 | Water : 92.7% Distillate Fuel Oil : 7.3% |
| Greenfield | OneEnergy, Inc. | Coon Valley, WI | Midcontinent Independent System Operator, Inc. (MISO) | 200.0 MWh | Oct 2025 | Dec 2025 | Solar |
| Arcadia Electric | City of Arcadia - (WI) | Arcadia, WI | Midcontinent Independent System Operator, Inc. (MISO) | 253.0 MWh | Dec 1929 | Dec 2025 | Distillate Fuel Oil : 70.5% Natural Gas : 29.5% |
| Bridge Creek | OneEnergy, Inc. | Augusta, WI | Midcontinent Independent System Operator, Inc. (MISO) | 258.0 MWh | Oct 2025 | Dec 2025 | Solar |
| Cumberland (WI) | City of Cumberland - (WI) | Cumberland, WI | Midcontinent Independent System Operator, Inc. (MISO) | 269.0 MWh | Jul 1939 | Dec 2025 | Distillate Fuel Oil : 62.7% Natural Gas : 37.3% |
| Nortera Customer Hosted Solar | Wisconsin Power & Light Co | Fairwater, WI | Midcontinent Independent System Operator, Inc. (MISO) | 307.0 MWh | Jul 2025 | Dec 2025 | Solar |
| Rock LakeSolar WI, LLC | Wisconsin Electric Power Co | Waterloo, WI | Midcontinent Independent System Operator, Inc. (MISO) | 318.0 MWh | Oct 2025 | Dec 2025 | Solar |
| Next Generation | OneEnergy, Inc. | Woodville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 331.0 MWh | Sep 2025 | Dec 2025 | Solar |
| Bright Future | OneEnergy, Inc. | Hammond, WI | Midcontinent Independent System Operator, Inc. (MISO) | 361.0 MWh | Sep 2025 | Dec 2025 | Solar |
| Hannibal | OneEnergy, Inc. | Gillman, WI | Midcontinent Independent System Operator, Inc. (MISO) | 378.0 MWh | Sep 2025 | Dec 2025 | Solar |
| Barron | City of Barron - (WI) | Barron, WI | Midcontinent Independent System Operator, Inc. (MISO) | 382.0 MWh | Jul 1923 | Dec 2025 | Water |
| La Grange Solar Partners, LLC | Wisconsin Electric Power Co | Elkhorn, WI | Midcontinent Independent System Operator, Inc. (MISO) | 405.0 MWh | Oct 2025 | Dec 2025 | Solar |
| Elk Mound | Dairyland Power Coop | Elk Mound, WI | Midcontinent Independent System Operator, Inc. (MISO) | 466.0 MWh | May 2001 | Dec 2025 | Natural Gas : 63.5% Distillate Fuel Oil : 36.5% |
| Domtar Paper Company Rothschild | Domtar Paper Company Rothschild | Rothschild, WI | Midcontinent Independent System Operator, Inc. (MISO) | 524.0 MWh | Dec 1909 | Dec 2025 | Water |
| Jefferson Solar Park | Concord New Energy | Jefferson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 577.0 MWh | Nov 2013 | Dec 2025 | Solar |
| Spring Brook Solar WI, LLC | Wisconsin Electric Power Co | Whitewater, WI | Midcontinent Independent System Operator, Inc. (MISO) | 630.0 MWh | Sep 2025 | Dec 2025 | Solar |
| Elk Mound (PV) | OneEnergy, Inc. | Elk Mound, WI | Midcontinent Independent System Operator, Inc. (MISO) | 653.0 MWh | Aug 2025 | Dec 2025 | Solar |
| Elroy Solar | Green Street Power Partners | Mauston, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.3 GWh | Aug 2019 | Dec 2025 | Solar |
| Diesel Generators | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.3 GWh | May 2001 | May 2026 | Distillate Fuel Oil |
| Conrath DPC Solar | SoCore Energy LLC | Conrath, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.5 GWh | May 2017 | Dec 2025 | Solar |
| IKEA Oak Creek Rooftop PV System | IKEA Property Inc | Oak Creek, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.5 GWh | May 2018 | Dec 2025 | Solar |
| Sauk DPC Solar | SoCore Energy LLC | Wonewoc, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.5 GWh | Dec 2016 | Dec 2025 | Solar |
| Lafayette DPC Solar | SoCore Energy LLC | Chippewa Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.6 GWh | May 2017 | Dec 2025 | Solar |
| Rock County Customer Hosted Solar | Wisconsin Power & Light Co | Janesville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.6 GWh | Mar 2025 | Dec 2025 | Solar |
| UW Kegonsa Customer Hosted Solar | Wisconsin Power & Light Co | Stoughton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.6 GWh | Apr 2025 | Dec 2025 | Solar |
| Whistling Winds DPC Solar | SoCore Energy LLC | New Lisbon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.6 GWh | May 2017 | May 2026 | Solar |
| Downsville DPC Solar | SoCore Energy LLC | Menomonee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.7 GWh | Jan 2017 | May 2026 | Solar |
| Fond du Lac Community Solar | SoCore Energy LLC | Fond Du Lac, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.7 GWh | Nov 2021 | Dec 2025 | Solar |
| ENGIE 2020 ProjectCo-WI1 LLC | ENGIE 2020 ProjectCo-WI1 LLC | Fond Du Lac, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.7 GWh | Nov 2021 | Dec 2025 | Solar |
| Epic Verona | Epic Hosting, LLC | Verona, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.8 GWh | May 2009 | Dec 2025 | Solar : 90.8% Distillate Fuel Oil : 9.2% |
| Middleton Biogas Solar, LLC | Middleton Biogas Solar, LLC | Middleton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.9 GWh | Apr 2022 | Dec 2025 | Solar |
| Liberty Pole DPC Solar | SoCore Energy LLC | Viroqua, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.0 GWh | Apr 2017 | May 2026 | Solar |
| Mt. Hope DPC Solar | SoCore Energy LLC | Mt. Hope, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.1 GWh | Dec 2016 | May 2026 | Solar |
| Sand Lake DPC Solar | SoCore Energy LLC | Centuria, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.2 GWh | Oct 2017 | Dec 2025 | Solar |
| CREE | Wisconsin Electric Power Co | Racine, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.2 GWh | Jul 2021 | Dec 2025 | Solar |
| Danbury Dam | Zero6 Energy Hydro | Danbury, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.3 GWh | Dec 1920 | Dec 2025 | Water |
| Kaukauna Gas Turbine | City of Kaukauna (WI) | Kaukauna, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.3 GWh | Apr 1969 | Dec 2025 | Natural Gas |
| Ogema | Greenbacker Renewable Energy Corporation | Ogema, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.5 GWh | Feb 2024 | Dec 2025 | Solar |
| Wolf River (Chipewa 1) | Greenbacker Renewable Energy Corporation | Stanley, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.6 GWh | Jan 2024 | Dec 2025 | Solar |
| Janesville Community Solar | Wisconsin Power & Light Co | Janesville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.6 GWh | Mar 2025 | Dec 2025 | Solar |
| Harley-Davison Powertrain Operations | Wisconsin Electric Power Co | Menomonee Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.6 GWh | Sep 2020 | Dec 2025 | Solar |
| Hay River (Dunn 1) | Greenbacker Renewable Energy Corporation | Boyceville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.7 GWh | Jan 2024 | Dec 2025 | Solar |
| White River (WI) | Northern States Power Co - Minnesota | Ashland, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.7 GWh | Dec 1906 | Dec 2025 | Water |
| Webster Creek (Oak 2) | Greenbacker Renewable Energy Corporation | New Lisbon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Nov 2023 | Dec 2025 | Solar |
| Walleye (Dunn 2) | Greenbacker Renewable Energy Corporation | Colefax, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Jan 2024 | Dec 2025 | Solar |
| Bluff Prairie (Vernon) | Greenbacker Renewable Energy Corporation | De Soto, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Oct 2023 | Dec 2025 | Solar |
| Regal Ware | Wisconsin Electric Power Co | West Bend, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Mar 2021 | May 2025 | Solar |
| Medford DPC Solar | SoCore Energy LLC | Medford, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Jan 2017 | May 2026 | Solar |
| Strobus | Altus Power America Management, LLC | Merrillan, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Aug 2021 | Dec 2025 | Solar |
| ATI | Wisconsin Electric Power Co | Cudahy, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Oct 2020 | Dec 2025 | Solar |
| Kohler Solar | Wisconsin Power & Light Co | Kohler, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | May 2022 | Dec 2025 | Solar |
| Cashton Solar | Green Street Power Partners | Cashton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Aug 2019 | Dec 2025 | Solar |
| HQC Rock River Solar Power Gen Station | HQC Rock River Solar Power Generation Station LLC | Beloit, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.0 GWh | Jun 2016 | Dec 2024 | Solar |
| Flambeau Lower Project | Zero6 Energy Hydro | Park Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.0 GWh | Dec 1922 | Dec 2025 | Water |
| Ameresco Janesville | AMERESCO Janesville LLC | Janesville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.1 GWh | Sep 2004 | Dec 2025 | Landfill Gas |
| Winnebago County Landfill Gas | Winnebago County - (WI) | Oshkosh, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.2 GWh | Jan 2000 | Dec 2025 | Landfill Gas |
| City of Milwaukee Landfill | Wisconsin Electric Power Co | Milwaukee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.2 GWh | Jan 2021 | Dec 2025 | Solar |
| Trimbelle (Pierce Pepin) | Greenbacker Renewable Energy Corporation | Hager City, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.4 GWh | Jan 2024 | Dec 2025 | Solar |
| Cumberland Solar | Green Street Power Partners | Cumberland, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.6 GWh | Aug 2019 | Dec 2025 | Solar |
| Spooner Solar Array | Onsite Partners, LLC | Spooner, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.6 GWh | May 2019 | Dec 2024 | Solar |
| Merrill | Wisconsin Public Service Corp | Merrill, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Feb 1917 | Dec 2025 | Water |
| Jones Dairy | Wisconsin Electric Power Co | Fort Atkinson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Jun 2021 | Dec 2025 | Solar |
| Onalaska Campus Landfill Biogas | Gundersen Lutheran Biogas I LLC | Onalaska, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Feb 2012 | Dec 2025 | Landfill Gas |
| Lannon Stone | Wisconsin Electric Power Co | Pewaukee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Nov 2021 | Dec 2025 | Solar |
| Popple Creek (Clark 1) | Greenbacker Renewable Energy Corporation | Colby, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Jan 2024 | Dec 2025 | Solar |
| Washington County | Wisconsin Electric Power Co | West Bend, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Dec 2019 | Dec 2025 | Solar |
| Georgetown (Polk Burnett) | Greenbacker Renewable Energy Corporation | Balsam Lake, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.8 GWh | Oct 2023 | Dec 2025 | Solar |
| Warren DPC Solar | SoCore Energy LLC | Roberts, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.8 GWh | Apr 2017 | May 2026 | Solar |
| UW Parkside | Wisconsin Electric Power Co | Kenosha, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Oct 2020 | Dec 2025 | Solar |
| Flambeau Crowley Rapids Project | Zero6 Energy Hydro | Park Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Dec 1929 | Dec 2025 | Water |
| Custer Energy Center | Manitowoc Public Utilities | Manitowoc, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.1 GWh | May 1999 | Dec 2025 | Natural Gas |
| New Lisbon Solar | Green Street Power Partners | New Lisbon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.2 GWh | Aug 2019 | Dec 2025 | Solar |
| Park Mill | Eagle Creek Renewable Energy, LLC | Marinette, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.2 GWh | Dec 1919 | Dec 2025 | Water |
| Potato Rapids | Wisconsin Public Service Corp | Town of Porterfield, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.2 GWh | Apr 1921 | Dec 2025 | Water |
| Blue Prairie Solar, LLC | Altus Power America Management, LLC | Black River Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.3 GWh | Jul 2021 | Dec 2025 | Solar |
| Flambeau Solar Partners | REC Solar | Phillips, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.4 GWh | Apr 2017 | Dec 2024 | Solar |
| New Auburn DPC Solar | SoCore Energy LLC | New Auburn, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.5 GWh | Dec 2017 | May 2026 | Solar |
| Fennimore Solar | Green Street Power Partners | Fennimore, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.8 GWh | Aug 2019 | Dec 2025 | Solar |
| Clam River Dam | Zero6 Energy Hydro | Danbury, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.8 GWh | Mar 1942 | Dec 2025 | Water |
| Trego | Northern States Power Co - Minnesota | Hayward, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.1 GWh | Dec 1926 | Dec 2025 | Water |
| Stiles | Oconto Electric Cooperative | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.3 GWh | Feb 1949 | Dec 2025 | Water |
| Stromland Solar | Altus Power America Management, LLC | Cochrane, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.5 GWh | Nov 2021 | Dec 2025 | Solar |
| Arpin Dam | Zero6 Energy Hydro | Radisson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.5 GWh | Aug 1971 | Aug 2025 | Water |
| Lemonweir (Oak 1) | Greenbacker Renewable Energy Corporation | Mauston, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.6 GWh | Nov 2023 | Dec 2025 | Solar |
| Shamrock Solar LLC | Altus Power America Management, LLC | Black River Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.7 GWh | Nov 2021 | Dec 2025 | Solar |