Nameplate capacity
270 MW
Rank in Illinois
#45
of 580 plants
In service since
2001
April 2001
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Union Electric Co - (MO)
- County
- Marion County
- Generating units
- 2
- Share of state capacity
- 0.51%
- Rank among natural gas plants in Illinois
- #27 of 72
- EIA plant code
- 55204
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 135 MW | 104 MW | 2001 | Operating |
| 2 | Natural Gas Fired Combustion Turbine | 135 MW | 104 MW | 2001 | 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
| Emily Solar, LLC | Solar | 274 MW |
| Gibson City Energy Center LLC | Natural gas | 270 MW |
| Fisk Street | Other | 260 MW |
| Sapphire Sky Wind Energy LLC | Wind | 260 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 270 MW solar plant and a 270 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