Directory of Power Plants in Wisconsin
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| St Croix Falls | Northern States Power Co - Minnesota | St Croix Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 104.9 GWh | Dec 1909 | Dec 2024 | Water |
| Saxon Falls | Northern States Power Co - Minnesota | Saxon, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.0 GWh | Dec 1912 | 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 |
| Sandstone Rapids | Wisconsin Public Service Corp | Town of Stephenson, WI | Midcontinent Independent System Operator, Inc. (MISO) | 8.8 GWh | Dec 1924 | Dec 2024 | Water |
| Stiles | Oconto Electric Cooperative | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.6 GWh | Feb 1949 | Dec 2024 | Water |
| South Oak Creek | Wisconsin Electric Power Co | Oak Creek, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.2 TWh | Nov 1959 | Mar 2025 | Subbituminous Coal : 99.7% |
| Sycamore (WI) | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 19.0 MWh | Nov 1967 | Dec 2024 | Natural Gas |
| South Fond Du Lac | Wisconsin Power & Light Co | Fond du Lac, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.4 GWh | Apr 1993 | Dec 2024 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| Stevens Point Mill | Pixelle Specialty Solution, LLC | Stevens Point, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.7 GWh | Jan 2002 | Dec 2024 | Natural Gas |
| Sheboygan Falls | Wisconsin Power & Light Co | Sheboygan, WI | Midcontinent Independent System Operator, Inc. (MISO) | 642.5 GWh | May 2005 | Dec 2024 | Natural Gas |
| Shirley Wind | Duke Energy Renewables Services | Denmark, WI | Midcontinent Independent System Operator, Inc. (MISO) | 59.5 GWh | Oct 2010 | Dec 2024 | Wind |
| Sauk DPC Solar | SoCore Energy LLC | Wonewoc, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.5 GWh | Dec 2016 | Dec 2024 | Solar |
| Sand Lake DPC Solar | SoCore Energy LLC | Centuria, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.1 GWh | Oct 2017 | Dec 2024 | Solar |
| Spooner Solar Array | AEP Onsite Partners, LLC | Spooner, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.5 GWh | May 2019 | Dec 2023 | Solar |
| Strobus | Greenbacker Renewable Energy Corporation | Merrillan, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.0 GWh | Aug 2021 | Dec 2024 | Solar |
| Shamrock Solar LLC | Greenbacker Renewable Energy Corporation | Black River Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.3 GWh | Nov 2021 | Dec 2024 | Solar |
| Stromland Solar | Greenbacker Renewable Energy Corporation | Cochrane, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.0 GWh | Nov 2021 | Dec 2024 | Solar |
| Springfield Solar (WI) | Wisconsin Power & Light Co | Lomira, WI | Midcontinent Independent System Operator, Inc. (MISO) | 193.0 GWh | Nov 2023 | Mar 2025 | Solar |
| Silver Lake Solar WI, LLC | Wisconsin Electric Power Co | Salem, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.1 GWh | Nov 2023 | May 2024 | Solar |
| Spring Prairie Solar WI, LLC | Wisconsin Electric Power Co | Burlington, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Nov 2023 | May 2024 | Solar |
Browse Power Plants By Wisconsin Counties
Figures are based on March 2025 generation numbers.| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Adams County, WI | # 32 | 2 | 108.7 GWh |
| Richland County, WI | # 33 | 4 | 103.9 GWh |
| Racine County, WI | # 34 | 5 | 100.6 GWh |
| La Crosse County, WI | # 35 | 2 | 66.2 GWh |
| Dunn County, WI | # 36 | 5 | 65.8 GWh |
| Florence County, WI | # 37 | 3 | 56.6 GWh |
| Eau Claire County, WI | # 38 | 2 | 42.4 GWh |
| Oneida County, WI | # 39 | 3 | 24.4 GWh |
| Oconto County, WI | # 40 | 3 | 19.0 GWh |
| Barron County, WI | # 41 | 5 | 17.0 GWh |
| St. Croix County, WI | # 42 | 3 | 16.8 GWh |
| Monroe County, WI | # 43 | 3 | 14.0 GWh |
| Green Lake County, WI | # 44 | 1 | 13.6 GWh |
| Kewaunee County, WI | # 45 | 3 | 13.4 GWh |
| Sawyer County, WI | # 46 | 4 | 13.2 GWh |
| Price County, WI | # 47 | 6 | 12.4 GWh |
| Jackson County, WI | # 48 | 4 | 12.1 GWh |
| Washburn County, WI | # 49 | 3 | 10.0 GWh |
| Trempealeau County, WI | # 50 | 2 | 8.6 GWh |
| Iron County, WI | # 51 | 1 | 8.0 GWh |
| Burnett County, WI | # 52 | 4 | 7.7 GWh |
| Waukesha County, WI | # 53 | 2 | 7.0 GWh |
| Vernon County, WI | # 54 | 5 | 6.1 GWh |
| Walworth County, WI | # 55 | 3 | 4.0 GWh |
| Clark County, WI | # 56 | 1 | 3.7 GWh |
| Pierce County, WI | # 57 | 2 | 3.0 GWh |
| Taylor County, WI | # 58 | 1 | 2.7 GWh |
| Shawano County, WI | # 59 | 1 | 1.4 GWh |
| Langlade County, WI | # 60 | 1 | 279.0 MWh |
| Door County, WI | # 61 | 1 | 9.0 MWh |