Power plants in Williamson County, Illinois
9 operating power plants in Williamson County, Illinois, with 266 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Williamson County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | MarionNatural gas and coal | 249 | 767 | 35.2% |
| 2 | East Marion IL 1, LLCSolar | 4.0 | 3.5 | – |
| 3 | Clendenin A Community Solar, LLC CSGSolar | 2.0 | 4.0 | 23.1% |
| 4 | Lukuc B Community Solar LLC CSGSolar | 2.0 | 3.5 | 20.2% |
| 5 | Hurricane Creek CSGSolar | 2.0 | 4.2 | 24.2% |
| 6 | SV CSG Barrass Farms II LLSolar | 2.0 | 4.7 | 26.8% |
| 7 | SV CSG Bishop 1 LLCSolar | 2.0 | 0.1 | – |
| 8 | SV CSG Gander Farms 1 ASolar | 2.0 | 0.2 | – |
| 9 | John A Logan College SolarSolar | 1.3 | 2.0 | 17.6% |
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
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