Directory of Power Plants in Michigan
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Superior Falls | Northern States Power Co - Minnesota | Ironwood, MI | Midcontinent Independent System Operator, Inc. (MISO) | 7.5 GWh | Dec 1916 | Dec 2024 | Water |
| Sumpter Energy Associates | NextEra Renewable Fuels, LLC | Belleville, MI | Midcontinent Independent System Operator, Inc. (MISO) | 63.4 GWh | Jun 1992 | Dec 2024 | Landfill Gas |
| Sumpter | Wolverine Power Supply Coop | Belleville, MI | Midcontinent Independent System Operator, Inc. (MISO) | 190.1 GWh | Jun 2002 | Dec 2024 | Natural Gas |
| Sturgis City Diesel Plant | City of Sturgis - (MI) | Sturgis, MI | PJM Interconnection, LLC (PJM) | 2.1 GWh | Nov 1981 | Dec 2024 | Natural Gas : 84.5% Distillate Fuel Oil : 15.5% |
| Stoney Corners Wind Farm | DTE Sustainable Generation | McBain, MI | Midcontinent Independent System Operator, Inc. (MISO) | 126.7 GWh | Nov 2009 | Dec 2024 | Wind |
| Stoneheart Solar, LLC | Stoneheart Solar, LLC | Saginaw, MI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Nov 2020 | Dec 2024 | Solar |
| St Louis | City of St Louis - (MI) | St. Louis, MI | Midcontinent Independent System Operator, Inc. (MISO) | 29.0 MWh | Dec 1918 | Dec 2024 | Water : 75.9% Distillate Fuel Oil : 24.1% |
| St Clair | DTE Electric Company | East China Twp, MI | Midcontinent Independent System Operator, Inc. (MISO) | 2.8 GWh | Jul 1953 | Apr 2025 | Natural Gas |
| Spartan PV 1, LLC | NJR Clean Energy Ventures Corporation | East Lansing, MI | Midcontinent Independent System Operator, Inc. (MISO) | 12.0 GWh | Nov 2017 | Dec 2024 | Solar |
| Southeast Berrien Generating Facility | North American Natural Res | Niles, MI | PJM Interconnection, LLC (PJM) | 23.6 GWh | Apr 2009 | Dec 2024 | Landfill Gas |
| Sigel Wind Park | DTE Electric Company | Harbor Beach, MI | Midcontinent Independent System Operator, Inc. (MISO) | 256.1 GWh | Nov 2012 | Apr 2025 | Wind |
| Shipsterns Solar, LLC | Shipsterns Solar, LLC | Albion, MI | Midcontinent Independent System Operator, Inc. (MISO) | 1.3 GWh | Sep 2023 | Dec 2023 | Solar |
| Sauk Solar Park | DTE Electric Company | Union City, MI | Midcontinent Independent System Operator, Inc. (MISO) | 52.8 GWh | - | Apr 2025 | Solar |
| Saint Marys Falls | USACE-Detroit District | Sault Ste. Marie, MI | Midcontinent Independent System Operator, Inc. (MISO) | 155.2 GWh | Jun 1932 | Dec 2024 | Water |