Directory of Power Plants in Wisconsin

List of All Wisconsin Power Plants

Displaying Results 1 to 7 of 7
Plant NameUtilityLocationBalancing AuthorityAnnual GenerationPlant DateLast UpdateFuel Types
Onion RiverWisconsin Power & Light CoSheboygan Cedar Grove, WIMidcontinent Independent System Operator, Inc. (MISO)259.6 GWhNov 2023May 2026 Solar
Onalaska Campus Landfill BiogasGundersen Lutheran Biogas I LLCOnalaska, WIMidcontinent Independent System Operator, Inc. (MISO)3.7 GWhFeb 2012Dec 2025 Landfill Gas
Omega Hills Gas RecoveryWM Renewable Energy LLCGermantown, WIMidcontinent Independent System Operator, Inc. (MISO)77.8 GWhNov 1985May 2026 Landfill Gas
OgemaGreenbacker Renewable Energy CorporationOgema, WIMidcontinent Independent System Operator, Inc. (MISO)2.5 GWhFeb 2024Dec 2025 Solar
Oconto Falls UpperEagle Creek Renewable Energy, LLCOconto Falls, WIMidcontinent Independent System Operator, Inc. (MISO)12.0 GWhDec 1917Dec 2025 Water
Oconto Falls LowerEagle Creek Renewable Energy, LLCOconto Falls, WIMidcontinent Independent System Operator, Inc. (MISO)6.0 GWhDec 1970Dec 2025 Water
O'Brien Solar FieldsMadison Gas & Electric CoFitchburg, WIMidcontinent Independent System Operator, Inc. (MISO)37.4 GWhApr 2021Dec 2025 Solar

Browse Power Plants By Wisconsin Counties

Figures are based on December 2025 generation numbers.
CountyState RankActive PlantsDec 2025 Generation
Door County, WI# 6115.0 MWh
Taylor County, WI# 6023.2 GWh
Pierce County, WI# 5923.4 GWh
Clark County, WI# 5823.7 GWh
Vernon County, WI# 5756.3 GWh
Waukesha County, WI# 5626.3 GWh
Burnett County, WI# 5567.2 GWh
Trempealeau County, WI# 5427.4 GWh
Washburn County, WI# 5348.8 GWh
Iron County, WI# 5219.1 GWh
Green Lake County, WI# 51111.6 GWh
Shawano County, WI# 50112.0 GWh
Kewaunee County, WI# 49312.0 GWh
Sawyer County, WI# 48412.7 GWh
Monroe County, WI# 47312.8 GWh
Jackson County, WI# 46412.8 GWh
Price County, WI# 45614.0 GWh
Barron County, WI# 44717.0 GWh
St. Croix County, WI# 43517.8 GWh
Langlade County, WI# 42217.9 GWh
Oconto County, WI# 41323.3 GWh
Walworth County, WI# 40524.1 GWh
Oneida County, WI# 39327.1 GWh
Eau Claire County, WI# 38337.1 GWh
Florence County, WI# 37360.5 GWh
Dunn County, WI# 36560.8 GWh
La Crosse County, WI# 35369.1 GWh
Portage County, WI# 34792.9 GWh
Adams County, WI# 33298.8 GWh
Richland County, WI# 324107.5 GWh
Juneau County, WI# 3111112.7 GWh
CountyState RankActive PlantsDec 2025 Generation
Washington County, WI# 305117.6 GWh
Rusk County, WI# 296126.2 GWh
Sauk County, WI# 281152.9 GWh
Polk County, WI# 277176.8 GWh
Ashland County, WI# 262179.7 GWh
Waushara County, WI# 252189.7 GWh
Lincoln County, WI# 245220.5 GWh
Kenosha County, WI# 237275.0 GWh
Marinette County, WI# 2210291.2 GWh
Racine County, WI# 216353.1 GWh
Lafayette County, WI# 202371.6 GWh
Chippewa County, WI# 1914457.4 GWh
Iowa County, WI# 183464.8 GWh
Winnebago County, WI# 176486.0 GWh
Fond du Lac County, WI# 169547.4 GWh
Dodge County, WI# 156570.3 GWh
Brown County, WI# 148579.7 GWh
Wood County, WI# 1310660.1 GWh
Grant County, WI# 129737.5 GWh
Jefferson County, WI# 1110820.6 GWh
Buffalo County, WI# 1041.1 TWh
Dane County, WI# 9301.1 TWh
Sheboygan County, WI# 852.6 TWh
Marathon County, WI# 784.5 TWh
Outagamie County, WI# 6154.8 TWh
Columbia County, WI# 575.9 TWh
Ozaukee County, WI# 426.9 TWh
Rock County, WI# 3158.5 TWh
Milwaukee County, WI# 2119.9 TWh
Manitowoc County, WI# 1710.6 TWh