PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/55856
EIA plant 55856
Marissa · St Clair · IL
Prairie State Generating Station
Operated by Prairie State Generating Co LLC
Published location
Where is Prairie State Generating Station?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
38.279167, -89.666944
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 1,139,375 MWh |
| 2 | 998,152 MWh |
| 3 | 1,160,460 MWh |
| 4 | 1,035,389 MWh |
| 5 | 1,016,611 MWh |
| 6 | 936,699 MWh |
| 7 | 1,158,557 MWh |
| 8 | 1,172,746 MWh |
| 9 | 1,056,528 MWh |
| 10 | 918,080 MWh |
| 11 | 543,866 MWh |
| 12 | 311,285 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| PC1 | Conventional Steam Coal | BIT | 883 | OP |
| PC2 | Conventional Steam Coal | BIT | 883 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
55856
Sector
IPP Non-CHP
Water source
Kaskaskia River
Data edition
2024-final