Nameplate capacity
260 MW
Rank in Illinois
#46
of 580 plants
In service since
1968
July 1968
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Midwest Generations EME LLC
- County
- Cook County
- Generating units
- 8
- Share of state capacity
- 0.49%
- Rank among other plants in Illinois
- #1 of 45
- EIA plant code
- 886
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 311 | Petroleum Liquids | 33 MW | 25 MW | 1968 | Operating |
| 312 | Petroleum Liquids | 33 MW | 24 MW | 1968 | Operating |
| 321 | Petroleum Liquids | 33 MW | 25 MW | 1968 | Operating |
| 322 | Petroleum Liquids | 33 MW | 25 MW | 1968 | Operating |
| 331 | Petroleum Liquids | 33 MW | 24 MW | 1968 | Operating |
| 332 | Petroleum Liquids | 33 MW | 25 MW | 1968 | Operating |
| 341 | Petroleum Liquids | 33 MW | 25 MW | 1968 | Out of service and NOT expected to return to service in next calendar year |
| 342 | Petroleum Liquids | 33 MW | 23 MW | 1968 | 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
| Gibson City Energy Center LLC | Natural gas | 270 MW |
| Kinmundy | Natural gas | 270 MW |
| Sapphire Sky Wind Energy LLC | Wind | 260 MW |
| Blooming Grove Wind Energy Center | Wind | 250 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 260 MW solar plant and a 260 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