Directory of Power Plants in Wisconsin
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| MMSD South Shore Wastewater | Milwaukee Metro Sewerage Dist | Oak Creek, WI | Midcontinent Independent System Operator, Inc. (MISO) | 23.0 GWh | Jul 2000 | Dec 2025 | Other Biomass Gas : 88.5% Natural Gas : 11.5% |
| Menomonie | Northern States Power Co - Minnesota | Menomonie, WI | Midcontinent Independent System Operator, Inc. (MISO) | 22.7 GWh | Dec 1957 | Dec 2025 | Water |
| Little Chute | City of Kaukauna (WI) | Combined Locks, WI | Midcontinent Independent System Operator, Inc. (MISO) | 22.1 GWh | May 1948 | Dec 2025 | Water |
| Portage Solar Plant | Portage Solar Plant | Portage, WI | Midcontinent Independent System Operator, Inc. (MISO) | 21.2 GWh | May 2023 | Dec 2025 | Solar |
| Galactic Wind | Galactic Wind | Waunakee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 21.2 GWh | Nov 2012 | Dec 2025 | Wind |
| South Fond Du Lac | Wisconsin Power & Light Co | Fond du Lac, WI | Midcontinent Independent System Operator, Inc. (MISO) | 20.3 GWh | Apr 1993 | Dec 2025 | Natural Gas : 99.8% |
| Island Street Peaking Plant | WPPI Energy | Kaukauna, WI | Midcontinent Independent System Operator, Inc. (MISO) | 20.2 GWh | May 2004 | Dec 2025 | Natural Gas |
| Timberline Trail Gas Recovery | WM Renewable Energy LLC | Weyerhaeser, WI | Midcontinent Independent System Operator, Inc. (MISO) | 19.1 GWh | Jan 2006 | Dec 2025 | Landfill Gas |
| Marshfield Utilities Gas Plant | City of Marshfield - (WI) | Marshfield, WI | Midcontinent Independent System Operator, Inc. (MISO) | 18.8 GWh | May 2011 | Dec 2025 | Natural Gas |
| Dane County Airport Solar | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 17.4 GWh | Nov 2020 | Dec 2025 | Solar |
| Wheaton | Northern States Power Co - Minnesota | Eau Claire, WI | Midcontinent Independent System Operator, Inc. (MISO) | 17.0 GWh | Dec 1972 | May 2025 | Natural Gas : 97.4% Distillate Fuel Oil : 2.6% |
| Rapide Croche | City of Kaukauna (WI) | Kaukana, WI | Midcontinent Independent System Operator, Inc. (MISO) | 16.5 GWh | Dec 1925 | Dec 2025 | Water |
| Hermsdorf Solar | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 16.4 GWh | Feb 2022 | Dec 2025 | Solar |
| Whiting | Consolidated Water Power Co | Whiting, WI | Midcontinent Independent System Operator, Inc. (MISO) | 16.1 GWh | Dec 1890 | Dec 2025 | Water |
| High Falls (WI) | Wisconsin Public Service Corp | Town of Stephenson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 15.6 GWh | Jul 1910 | Dec 2025 | Water |
| Adams PV Plant | Adams PV Plant (WI) | Adams, WI | Midcontinent Independent System Operator, Inc. (MISO) | 15.4 GWh | Jun 2023 | Dec 2025 | Solar |
| Stevens Point Mill | Pixelle Specialty Solution, LLC | Stevens Point, WI | Midcontinent Independent System Operator, Inc. (MISO) | 14.5 GWh | Jan 2002 | Dec 2025 | Natural Gas |
| Alexander | Wisconsin Public Service Corp | Merrill, WI | Midcontinent Independent System Operator, Inc. (MISO) | 13.9 GWh | Dec 1924 | Dec 2025 | Water |
| Kimberly Mill | City of Kaukauna (WI) | Appleton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 13.3 GWh | Dec 1925 | Dec 2025 | Water |
| Apple River | Northern States Power Co - Minnesota | Somerset, WI | Midcontinent Independent System Operator, Inc. (MISO) | 13.2 GWh | Dec 1900 | Dec 2025 | Water |
| Hodag Solar | Wisconsin Public Service Corp | Rhinelander, WI | Midcontinent Independent System Operator, Inc. (MISO) | 13.2 GWh | Dec 2021 | Dec 2025 | Solar |
| Spring Prairie Solar WI, LLC | Wisconsin Electric Power Co | Burlington, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.8 GWh | Nov 2023 | Dec 2025 | Solar |
| Brule | Wisconsin Electric Power Co | Florence, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.4 GWh | Dec 1918 | Dec 2025 | Water |
| Appleton | Wisconsin Electric Power Co | Appleton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.2 GWh | Jul 1916 | Dec 2025 | Water |
| Wind Turbine | Madison Gas & Electric Co | Casco, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.0 GWh | May 1999 | Dec 2025 | Wind |
| Oconto Falls Upper | Eagle Creek Renewable Energy, LLC | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.0 GWh | Dec 1917 | Dec 2025 | Water |
| Bonduel Solar WI, LLC | Wisconsin Electric Power Co | Bonduel, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.0 GWh | Nov 2023 | Dec 2025 | Solar |
| Jackson Solar WI, LLC | Wisconsin Electric Power Co | Cedarburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 11.8 GWh | Nov 2023 | Dec 2025 | Solar |
| Berlin Landfill Gas | WM Renewable Energy LLC | Berlin, WI | Midcontinent Independent System Operator, Inc. (MISO) | 11.6 GWh | Jul 2001 | Dec 2025 | Landfill Gas |
| Tyto Solar | Madison Gas & Electric Co | Fitchburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 11.3 GWh | Jan 2024 | Dec 2025 | Solar |
| Pine | Wisconsin Electric Power Co | Florence, WI | Midcontinent Independent System Operator, Inc. (MISO) | 11.1 GWh | May 1922 | Dec 2025 | Water |
| Caldron Falls | Wisconsin Public Service Corp | Town of Stephenson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 10.9 GWh | Oct 1924 | Dec 2025 | Water |
| Tomahawk | Wisconsin Public Service Corp | Tomahawk, WI | Midcontinent Independent System Operator, Inc. (MISO) | 10.7 GWh | Dec 1937 | Dec 2025 | Water |
| Johnson Falls | Wisconsin Public Service Corp | Town of Stephenson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 10.7 GWh | Jun 1923 | Dec 2025 | Water |
| LaFayette Solar WI, LLC | Wisconsin Electric Power Co | Elkhorn, WI | Midcontinent Independent System Operator, Inc. (MISO) | 10.2 GWh | Nov 2024 | Dec 2025 | Solar |
| Ledgeview | Greenbacker Renewable Energy Corporation | Fond du Lac, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.9 GWh | Jul 2024 | Dec 2025 | Solar |
| Cashton Greens Wind Farm | Cashton Greens Wind Farm LLC | Cashton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.8 GWh | Apr 2012 | Dec 2025 | Wind |
| Sandstone Rapids | Wisconsin Public Service Corp | Town of Stephenson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.7 GWh | Dec 1924 | Dec 2025 | Water |
| Ladysmith Dam | Northern States Power Co - Minnesota | Ladysmith, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.6 GWh | Dec 1939 | Dec 2025 | Water |
| Strix Solar | Madison Gas & Electric Co | Fitchburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.3 GWh | Dec 2024 | Dec 2025 | Solar |
| Saxon Falls | Northern States Power Co - Minnesota | Saxon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.1 GWh | Dec 1912 | Dec 2025 | Water |
| Caledonia Solar WI, LLC | Wisconsin Electric Power Co | Caledonia, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.0 GWh | Mar 2025 | Dec 2025 | Solar |
| Antigo-Forrest Street Solar Project | Wisconsin Public Service Corp | Antigo, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.0 GWh | Oct 2024 | Dec 2025 | Solar |
| Antigo Solar Partners, LLC | Wisconsin Electric Power Co | Antigo, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.0 GWh | Oct 2025 | Dec 2025 | Solar |
| Hackbarth Solar WI, LLC | Wisconsin Electric Power Co | Fort Atkinson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.9 GWh | Nov 2024 | Dec 2025 | Solar |
| Silver Lake Solar WI, LLC | Wisconsin Electric Power Co | Salem, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.9 GWh | Nov 2023 | Dec 2025 | Solar |
| Auburn Solar WI, LLC | Wisconsin Electric Power Co | Campbellsport, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.9 GWh | Nov 2024 | Dec 2025 | Solar |
| Viresco Turtle Lake | Viresco Turtle Lake | Turtle Lake, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.5 GWh | Aug 2013 | Dec 2025 | Other Biomass Gas |
| Raymond Solar WI, LLC | Wisconsin Electric Power Co | Franksville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.3 GWh | Jan 2025 | Dec 2025 | Solar |
| Middleton Airport Solar | Madison Gas & Electric Co | Middleton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.4 GWh | Jun 2020 | Dec 2025 | Solar |
| Rhinelander Mill | Ahlstrom-Munksjo | Rhinelander, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.3 GWh | Nov 1917 | May 2026 | Water |
| Richland Center Renewable Energy LLC | Richland Center Renewable Energy LLC | Richland Center, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.2 GWh | Feb 2013 | Dec 2025 | Other Biomass Gas |
| LAC Courte Oreilles Hydroelect | Zero6 Energy Hydro | Winter, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.2 GWh | Nov 1986 | Dec 2025 | Water |
| Arcadia Solar | Green Street Power Partners | Arcadia, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.2 GWh | Aug 2019 | Dec 2025 | Solar |
| Rice Lake Solar Array | Onsite Partners, LLC | Rice Lake, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.0 GWh | May 2019 | Dec 2025 | Solar |
| Hat Rapids | Wisconsin Public Service Corp | Rhinelander, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.6 GWh | May 1923 | Dec 2025 | Water |
| Thornapple | Northern States Power Co - Minnesota | Bruce, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.6 GWh | Dec 1926 | Dec 2025 | Water |
| Fiber Recovery, Inc. | Fiber Recovery, Inc | Ringle, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.5 GWh | Dec 2007 | Dec 2024 | Landfill Gas |
| Oconto Falls Lower | Eagle Creek Renewable Energy, LLC | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.0 GWh | Dec 1970 | Dec 2025 | Water |
| Barron Solar Array | Onsite Partners, LLC | Barron, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.8 GWh | Jul 2021 | 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 |
| Lemonweir (Oak 1) | Greenbacker Renewable Energy Corporation | Mauston, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.6 GWh | Nov 2023 | Dec 2025 | Solar |
| Arpin Dam | Zero6 Energy Hydro | Radisson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.5 GWh | Aug 1971 | Aug 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 |
| Stiles | Oconto Electric Cooperative | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.3 GWh | Feb 1949 | 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 |
| Clam River Dam | Zero6 Energy Hydro | Danbury, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.8 GWh | Mar 1942 | Dec 2025 | Water |
| Fennimore Solar | Green Street Power Partners | Fennimore, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.8 GWh | Aug 2019 | Dec 2025 | 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 |
| Flambeau Solar Partners | REC Solar | Phillips, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.4 GWh | Apr 2017 | Dec 2024 | Solar |
| 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 |
| Potato Rapids | Wisconsin Public Service Corp | Town of Porterfield, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.2 GWh | Apr 1921 | Dec 2025 | Water |
| Park Mill | Eagle Creek Renewable Energy, LLC | Marinette, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.2 GWh | Dec 1919 | Dec 2025 | Water |
| New Lisbon Solar | Green Street Power Partners | New Lisbon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.2 GWh | Aug 2019 | Dec 2025 | Solar |
| Custer Energy Center | Manitowoc Public Utilities | Manitowoc, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.1 GWh | May 1999 | Dec 2025 | Natural Gas |
| Flambeau Crowley Rapids Project | Zero6 Energy Hydro | Park Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Dec 1929 | Dec 2025 | Water |
| UW Parkside | Wisconsin Electric Power Co | Kenosha, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Oct 2020 | 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 |
| Georgetown (Polk Burnett) | Greenbacker Renewable Energy Corporation | Balsam Lake, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.8 GWh | Oct 2023 | 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 |
| Popple Creek (Clark 1) | Greenbacker Renewable Energy Corporation | Colby, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Jan 2024 | Dec 2025 | Solar |
| Lannon Stone | Wisconsin Electric Power Co | Pewaukee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Nov 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 |
| Jones Dairy | Wisconsin Electric Power Co | Fort Atkinson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Jun 2021 | Dec 2025 | Solar |
| Merrill | Wisconsin Public Service Corp | Merrill, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Feb 1917 | Dec 2025 | Water |
| Spooner Solar Array | Onsite Partners, LLC | Spooner, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.6 GWh | May 2019 | Dec 2024 | Solar |
| Cumberland Solar | Green Street Power Partners | Cumberland, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.6 GWh | Aug 2019 | 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 |
| City of Milwaukee Landfill | Wisconsin Electric Power Co | Milwaukee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.2 GWh | Jan 2021 | Dec 2025 | Solar |
| Winnebago County Landfill Gas | Winnebago County - (WI) | Oshkosh, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.2 GWh | Jan 2000 | Dec 2025 | Landfill Gas |
| Ameresco Janesville | AMERESCO Janesville LLC | Janesville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.1 GWh | Sep 2004 | Dec 2025 | Landfill Gas |
| Flambeau Lower Project | Zero6 Energy Hydro | Park Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.0 GWh | Dec 1922 | Dec 2025 | Water |
| 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 |
| Cashton Solar | Green Street Power Partners | Cashton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Aug 2019 | 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 |
| ATI | Wisconsin Electric Power Co | Cudahy, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Oct 2020 | Dec 2025 | Solar |
| Strobus | Altus Power America Management, LLC | Merrillan, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Aug 2021 | Dec 2025 | Solar |
| Medford DPC Solar | SoCore Energy LLC | Medford, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Jan 2017 | May 2026 | Solar |
| Regal Ware | Wisconsin Electric Power Co | West Bend, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Mar 2021 | May 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 |
Browse Power Plants By Wisconsin Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Richland County, WI | # 32 | 4 | 107.5 GWh |
| Adams County, WI | # 33 | 2 | 98.8 GWh |
| Portage County, WI | # 34 | 7 | 92.9 GWh |
| La Crosse County, WI | # 35 | 3 | 69.1 GWh |
| Dunn County, WI | # 36 | 5 | 60.8 GWh |
| Florence County, WI | # 37 | 3 | 60.5 GWh |
| Eau Claire County, WI | # 38 | 3 | 37.1 GWh |
| Oneida County, WI | # 39 | 3 | 27.1 GWh |
| Walworth County, WI | # 40 | 5 | 24.1 GWh |
| Oconto County, WI | # 41 | 3 | 23.3 GWh |
| Langlade County, WI | # 42 | 2 | 17.9 GWh |
| St. Croix County, WI | # 43 | 5 | 17.8 GWh |
| Barron County, WI | # 44 | 7 | 17.0 GWh |
| Price County, WI | # 45 | 6 | 14.0 GWh |
| Jackson County, WI | # 46 | 4 | 12.8 GWh |
| Monroe County, WI | # 47 | 3 | 12.8 GWh |
| Sawyer County, WI | # 48 | 4 | 12.7 GWh |
| Kewaunee County, WI | # 49 | 3 | 12.0 GWh |
| Shawano County, WI | # 50 | 1 | 12.0 GWh |
| Green Lake County, WI | # 51 | 1 | 11.6 GWh |
| Iron County, WI | # 52 | 1 | 9.1 GWh |
| Washburn County, WI | # 53 | 4 | 8.8 GWh |
| Trempealeau County, WI | # 54 | 2 | 7.4 GWh |
| Burnett County, WI | # 55 | 6 | 7.2 GWh |
| Waukesha County, WI | # 56 | 2 | 6.3 GWh |
| Vernon County, WI | # 57 | 5 | 6.3 GWh |
| Clark County, WI | # 58 | 2 | 3.7 GWh |
| Pierce County, WI | # 59 | 2 | 3.4 GWh |
| Taylor County, WI | # 60 | 2 | 3.2 GWh |
| Door County, WI | # 61 | 1 | 5.0 MWh |