Directory of Power Plants in Wisconsin
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Flambeau Hydroelectric Station | Dairyland Power Coop | Ladysmith, WI | Midcontinent Independent System Operator, Inc. (MISO) | 62.1 GWh | Dec 1950 | Dec 2024 | Water |
| John P Madgett | Dairyland Power Coop | Alma, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.3 TWh | Oct 1979 | Dec 2025 | Subbituminous Coal : 99.7% |
| RockGen Energy Center | Dairyland Power Coop | Cambridge, WI | Midcontinent Independent System Operator, Inc. (MISO) | 496.4 GWh | May 2001 | Dec 2025 | Natural Gas : 99.1% Distillate Fuel Oil : 0.9% |
| Whiting | Consolidated Water Power Co | Whiting, WI | Midcontinent Independent System Operator, Inc. (MISO) | 25.0 GWh | Dec 1890 | Dec 2024 | Water |
| Wisconsin Rapids | Consolidated Water Power Co | Wisconsin Rapids, WI | Midcontinent Independent System Operator, Inc. (MISO) | 49.9 GWh | Dec 1902 | Dec 2024 | Water |
| Stevens Point | Consolidated Water Power Co | Stevens Point, WI | Midcontinent Independent System Operator, Inc. (MISO) | 28.5 GWh | Dec 1917 | Dec 2024 | Water |
| Du Bay | Consolidated Water Power Co | Eau Pleine, WI | Midcontinent Independent System Operator, Inc. (MISO) | 43.1 GWh | Dec 1941 | Dec 2024 | Water |
| Biron | Consolidated Water Power Co | Biron, WI | Midcontinent Independent System Operator, Inc. (MISO) | 30.9 GWh | Dec 1895 | Dec 2024 | Water |
| Jefferson Solar Park | Concord New Energy | Jefferson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 918.0 MWh | Nov 2013 | Oct 2024 | Solar |
| New Lisbon | City of New Lisbon | New Lisbon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 19.0 MWh | Dec 1965 | Dec 2024 | Distillate Fuel Oil |
| Marshfield Utilities Gas Plant | City of Marshfield - (WI) | Marshfield, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | May 2011 | Dec 2024 | Natural Gas |
| Kimberly Mill | City of Kaukauna | Appleton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 13.7 GWh | Dec 1925 | Dec 2024 | Water |
| Combined Locks | City of Kaukauna | Combined Locks, WI | Midcontinent Independent System Operator, Inc. (MISO) | 43.4 GWh | Jan 1988 | Dec 2024 | Water |
| Little Chute | City of Kaukauna | Combined Locks, WI | Midcontinent Independent System Operator, Inc. (MISO) | 23.8 GWh | May 1948 | Dec 2024 | Water |
| Rapide Croche | City of Kaukauna | Kaukana, WI | Midcontinent Independent System Operator, Inc. (MISO) | 17.2 GWh | Dec 1925 | Dec 2024 | Water |
| New Badger | City of Kaukauna | Kaukauna, WI | Midcontinent Independent System Operator, Inc. (MISO) | 44.0 GWh | Dec 2013 | Dec 2025 | Water |
| Kaukauna Gas Turbine | City of Kaukauna | Kaukauna, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.7 GWh | Apr 1969 | Dec 2024 | Natural Gas |
| Kaukauna City Hydro | City of Kaukauna | Kaukauna, WI | Midcontinent Independent System Operator, Inc. (MISO) | 23.0 GWh | Nov 1940 | Dec 2024 | Water |
| Fennimore | City of Fennimore - (WI) | Fennimore, WI | Midcontinent Independent System Operator, Inc. (MISO) | 27.0 MWh | Jan 1952 | Dec 2024 | Distillate Fuel Oil |
| Elroy | City of Elroy - (WI) | Elroy, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.0 MWh | Apr 1973 | Dec 2024 | Distillate Fuel Oil |
| Cumberland (WI) | City of Cumberland - (WI) | Cumberland, WI | Midcontinent Independent System Operator, Inc. (MISO) | 260.0 MWh | Jul 1939 | Dec 2024 | Distillate Fuel Oil : 71.5% Natural Gas : 28.5% |
| Barron | City of Barron - (WI) | Barron, WI | Midcontinent Independent System Operator, Inc. (MISO) | 342.0 MWh | Jul 1923 | Dec 2024 | Water |
| Argyle | City of Argyle - (WI) | Argyle, WI | Midcontinent Independent System Operator, Inc. (MISO) | 24.0 MWh | Dec 1928 | Dec 2024 | Water : 87.5% Distillate Fuel Oil : 12.5% |
| Arcadia Electric | City of Arcadia - (WI) | Arcadia, WI | Midcontinent Independent System Operator, Inc. (MISO) | 150.0 MWh | Dec 1929 | Dec 2024 | Distillate Fuel Oil : 67.3% Natural Gas : 32.7% |
| Cashton Greens Wind Farm | Cashton Greens Wind Farm LLC | Cashton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 10.7 GWh | Apr 2012 | Dec 2024 | Wind |
| Arcadia Solar | Butter Solar, LLC | Arcadia, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.5 GWh | Aug 2019 | Dec 2024 | Solar |
| Fennimore Solar | Butter Solar, LLC | Fennimore, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.6 GWh | Aug 2019 | Dec 2024 | Solar |
| Elroy Solar | Butter Solar, LLC | Mauston, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.5 GWh | Aug 2019 | Dec 2024 | Solar |
| New Lisbon Solar | Butter Solar, LLC | New Lisbon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.1 GWh | Aug 2019 | Dec 2024 | Solar |
| Cumberland Solar | Butter Solar, LLC | Cumberland, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.7 GWh | Aug 2019 | Dec 2024 | Solar |
| Cashton Solar | Butter Solar, LLC | Cashton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.2 GWh | Aug 2019 | Dec 2024 | Solar |
| Butler Ridge | Butler Ridge Wind Energy Center | Mayville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 141.8 GWh | Jan 2009 | Dec 2025 | Wind |
| Beloit Memorial Hospital Power Plant | Beloit Memorial Hospital | Beloit, WI | Midcontinent Independent System Operator, Inc. (MISO) | 70.6 MWh | May 2000 | Dec 2024 | Natural Gas : 72.9% Distillate Fuel Oil : 27.1% |
| Ameresco Janesville | AMERESCO Janesville LLC | Janesville, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.1 GWh | Sep 2004 | Dec 2024 | Landfill Gas |
| Mosinee Mill | Ahlstrom-Munksjo NA Specialty Solutions, LLC | Mosinee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 118.0 GWh | Jun 1916 | Dec 2025 | Black Liquor : 51.4% Bituminous Coal : 14.4% Water : 12.5% Natural Gas : 12.1% Wood/Wood Waste Solids : 6.3% Residual Fuel Oil : 1.7% Sludge Waste : 1.6% |
| Rhinelander Mill | Ahlstrom-Munksjo | Rhinelander, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.8 GWh | Nov 1917 | Dec 2025 | Water |
| Spooner Solar Array | AEP Onsite Partners, LLC | Spooner, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.6 GWh | May 2019 | Dec 2024 | Solar |
| Barron Solar Array | AEP Onsite Partners, LLC | Barron, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.8 GWh | Jul 2021 | Dec 2024 | Solar |
| Rice Lake Solar Array | AEP Onsite Partners, LLC | Rice Lake, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.9 GWh | May 2019 | Dec 2024 | Solar |
| Adams PV Plant | Adams PV Plant (WI) | Adams, WI | Midcontinent Independent System Operator, Inc. (MISO) | 16.8 GWh | Jun 2023 | Dec 2024 | Solar |
Browse Power Plants By Wisconsin Counties
Figures are based on December 2024 generation numbers.| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Juneau County, WI | # 29 | 9 | 125.4 GWh |
| Rusk County, WI | # 28 | 6 | 137.5 GWh |
| Sauk County, WI | # 27 | 1 | 143.8 GWh |
| Ashland County, WI | # 26 | 2 | 164.2 GWh |
| Waushara County, WI | # 25 | 1 | 187.1 GWh |
| Marinette County, WI | # 24 | 10 | 193.4 GWh |
| Lincoln County, WI | # 23 | 5 | 225.7 GWh |
| Kenosha County, WI | # 22 | 5 | 281.4 GWh |
| Racine County, WI | # 21 | 5 | 336.0 GWh |
| Lafayette County, WI | # 20 | 2 | 381.2 GWh |
| Iowa County, WI | # 19 | 3 | 464.1 GWh |
| Fond du Lac County, WI | # 18 | 9 | 521.9 GWh |
| Brown County, WI | # 17 | 8 | 532.3 GWh |
| Chippewa County, WI | # 16 | 12 | 548.3 GWh |
| Dodge County, WI | # 15 | 6 | 579.8 GWh |
| Wood County, WI | # 14 | 10 | 671.3 GWh |
| Grant County, WI | # 13 | 9 | 733.3 GWh |
| Winnebago County, WI | # 12 | 5 | 748.7 GWh |
| Dane County, WI | # 11 | 26 | 977.8 GWh |
| Jefferson County, WI | # 10 | 8 | 1.2 TWh |
| Buffalo County, WI | # 9 | 3 | 1.3 TWh |
| Sheboygan County, WI | # 8 | 5 | 2.9 TWh |
| Outagamie County, WI | # 7 | 15 | 4.2 TWh |
| Marathon County, WI | # 6 | 8 | 5.2 TWh |
| Columbia County, WI | # 5 | 6 | 6.4 TWh |
| Ozaukee County, WI | # 4 | 2 | 7.3 TWh |
| Rock County, WI | # 3 | 15 | 8.3 TWh |
| Milwaukee County, WI | # 2 | 11 | 10.0 TWh |
| Manitowoc County, WI | # 1 | 7 | 10.8 TWh |