Power plants in Mason County, Illinois
6 operating power plants in Mason County, Illinois, with 412 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
6
Nameplate capacity
412 MW
Net generation, 2025
1.32 TWh
5 of 6 plants reported
Largest power plants in Mason County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Glacier Sands Wind Power, LLCWind | 185 | 632 | 39.0% |
| 2 | Moraine Sands Wind PowerWind | 171 | 574 | 38.3% |
| 3 | Salt Creek Township Solar, LLCSolar | 50 | 104 | – |
| 4 | Clark Solar 1Solar | 2.0 | 4.6 | 26.4% |
| 5 | Clark Solar 1ASolar | 2.0 | 4.5 | 25.9% |
| 6 | Clark Solar 2, LLCSolar | 2.0 | – | – |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
More power plant lists for Illinois
Largest power plants in Illinois50 plants · 38,995 MWSolar farms in Illinois453 plants · 5,222 MWWind farms in Illinois56 plants · 8,654 MWBattery storage projects in Illinois7 projects · 82 MWNatural gas power plants in Illinois62 plants · 17,552 MWCoal power plants in Illinois9 plants · 7,415 MWNuclear power plants in Illinois6 plants · 12,415 MWHydroelectric power plants in Illinois4 plants · 15 MW