United States › Power plants › Gas power plants › Illinois
GAS POWER PLANTS · COAL POWER PLANTSMarion
Marion is a 249 MW operating power plant in Williamson County, Illinois, operated by Southern Illinois Power Coop.
Generators
Each generating unit EIA lists at this plant.
| Unit | Technology | Capacity | Status |
|---|---|---|---|
| 5 | Natural Gas Fired Combustion Turbine | 75 MW | |
| 6 | Natural Gas Fired Combustion Turbine | 75 MW | |
| 1 | Conventional Steam Coal | 33 MW | |
| 2 | Conventional Steam Coal | 33 MW | |
| 3 | Conventional Steam Coal | 33 MW | |
| 4 | Conventional Steam Coal | 173 MW | Retired |
Plant details
- Operator
- Southern Illinois Power Coop
- Location
- Williamson County, Illinois
- Balancing authority
- MISO
- Sector
- Electric Utility
- Capacity
- Operating: 249 MW
Retired: 173 MW - First unit online
- Jun 1963
- EIA plant ID
- 976
Location
37.6197, -88.9531
Nearby power plants
- SV CSG Barrass Farms II LLSolar farms · 2.0 MW · 9.4 mi
- East Marion IL 1, LLCSolar farms · 4.0 MW · 9.5 mi
- Spillertown CSG 1 LLCSolar farms · 5.0 MW · 10.0 mi
- SV CSG Gander Farms 1 ASolar farms · 2.0 MW · 10.2 mi
- Blue Branch SolarSolar farms · 35.9 MW · 10.5 mi
- Spillertown CSG 2 LLCSolar farms · 5.0 MW · 10.7 mi
- SV CSG CorbellSolar farms · 2.0 MW · 11.1 mi
- John A Logan College SolarSolar farms · 1.3 MW · 11.6 mi
- Hurricane Creek CSGSolar farms · 2.0 MW · 13.1 mi
- SV CSG Bishop 1 LLCSolar farms · 2.0 MW · 13.2 mi
Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem