Power plants in Madison County, Illinois
9 operating power plants in Madison County, Illinois, with 684 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Madison County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | VeniceNatural gas | 586 | 18.3 | 0.4% |
| 2 | Granite City WorksOther fuels | 78 | 448 | 65.6% |
| 3 | Midwest Power Partners LLC (Pirolo)Solar | 5.0 | 9.1 | – |
| 4 | IL - Ameresco - AltonSolar | 5.0 | 0.0 | – |
| 5 | Edwardsville Solar IISolar | 2.0 | 4.1 | 23.5% |
| 6 | Mulberry Solar, LLCSolar | 2.0 | 4.0 | 22.9% |
| 7 | Highland Solar 1, LLCSolar | 2.0 | – | – |
| 8 | Marine Solar 1, LLCSolar | 2.0 | – | – |
| 9 | Marine 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
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