Pinckneyville
Natural gas power plant · Perry County, Illinois
Nameplate capacity
380 MW
Rank in Illinois
#33
of 580 plants
In service since
2000
June 2000
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Union Electric Co - (MO)
- County
- Perry County
- Generating units
- 8
- Share of state capacity
- 0.72%
- Rank among natural gas plants in Illinois
- #21 of 72
- EIA plant code
- 55202
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 5 | Natural Gas Fired Combustion Turbine | 50 MW | 35 MW | 2001 | Operating |
| 6 | Natural Gas Fired Combustion Turbine | 50 MW | 35 MW | 2001 | Operating |
| 7 | Natural Gas Fired Combustion Turbine | 50 MW | 35 MW | 2001 | Operating |
| 8 | Natural Gas Fired Combustion Turbine | 50 MW | 35 MW | 2001 | Operating |
| 1 | Natural Gas Fired Combustion Turbine | 45 MW | 44 MW | 2000 | Operating |
| 2 | Natural Gas Fired Combustion Turbine | 45 MW | 44 MW | 2000 | Operating |
| 3 | Natural Gas Fired Combustion Turbine | 45 MW | 44 MW | 2000 | Operating |
| 4 | Natural Gas Fired Combustion Turbine | 45 MW | 44 MW | 2000 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Illinois
| MRP Rocky Road LLC | Natural gas | 416 MW |
| Invenergy Nelson Expansion LLC | Natural gas | 380 MW |
| Crete Energy Venture LLC | Natural gas | 356 MW |
| University Park South | Natural gas | 353 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 380 MW solar plant and a 380 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Illinois power plants · What Illinois actually generates