Directory of Power Plants in Michigan
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Sumpter | Wolverine Power Supply Coop | Belleville, MI | Midcontinent Independent System Operator, Inc. (MISO) | 120.0 GWh | Jun 2002 | Nov 2023 | Natural Gas |
| Saint Marys Falls | USACE-Detroit District | Sault Ste. Marie, MI | Midcontinent Independent System Operator, Inc. (MISO) | 162.7 GWh | Jun 1932 | Dec 2023 | Water |
| Stoneheart Solar, LLC | Stoneheart Solar, LLC | Saginaw, MI | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Nov 2020 | Dec 2023 | Solar |
| Shipsterns Solar, LLC | Shipsterns Solar, LLC | Albion, MI | Midcontinent Independent System Operator, Inc. (MISO) | 1.3 GWh | Sep 2023 | Dec 2023 | Solar |
| Superior Falls | Northern States Power Co - Minnesota | Ironwood, MI | Midcontinent Independent System Operator, Inc. (MISO) | 9.2 GWh | Dec 1916 | Dec 2023 | Water |
| Southeast Berrien Generating Facility | North American Natural Res | Niles, MI | PJM Interconnection, LLC (PJM) | 31.6 GWh | Apr 2009 | Dec 2023 | Landfill Gas |
| Spartan PV 1, LLC | NJR Clean Energy Ventures Corporation | East Lansing, MI | Midcontinent Independent System Operator, Inc. (MISO) | 12.6 GWh | Nov 2017 | Dec 2023 | Solar |
| Sumpter Energy Associates | EPP Renewable Energy | Belleville, MI | Midcontinent Independent System Operator, Inc. (MISO) | 58.0 GWh | Jun 1992 | Dec 2023 | Landfill Gas |
| Stoney Corners Wind Farm | DTE Sustainable Generation | McBain, MI | Midcontinent Independent System Operator, Inc. (MISO) | 109.8 GWh | Nov 2009 | Dec 2023 | Wind |
| Slocum | DTE Electric Company | Trenton, MI | Midcontinent Independent System Operator, Inc. (MISO) | 96.3 MWh | Oct 1968 | Nov 2023 | Distillate Fuel Oil |
| St Clair | DTE Electric Company | East China Twp, MI | Midcontinent Independent System Operator, Inc. (MISO) | 290.0 MWh | Jul 1953 | Aug 2024 | Natural Gas |
| Sigel Wind Park | DTE Electric Company | Harbor Beach, MI | Midcontinent Independent System Operator, Inc. (MISO) | 236.3 GWh | Nov 2012 | Aug 2024 | Wind |
| Sturgis City Diesel Plant | City of Sturgis - (MI) | Sturgis, MI | PJM Interconnection, LLC (PJM) | 208.0 MWh | Nov 1981 | Dec 2023 | Natural Gas : 69.9% Distillate Fuel Oil : 30.1% |
| St Louis | City of St Louis - (MI) | St. Louis, MI | Midcontinent Independent System Operator, Inc. (MISO) | 175.0 MWh | Dec 1918 | Dec 2023 | Water : 95.4% Distillate Fuel Oil : 4.6% |