Granite City Works
Other power plant · Madison County, Illinois
Nameplate capacity
78 MW
Rank in Illinois
#117
of 580 plants
In service since
2010
June 2010
Details
- Primary fuel
- Other
- Technology
- All Other
- Operator
- United States Steel Granite City Works
- County
- Madison County
- Generating units
- 1
- Share of state capacity
- 0.15%
- Rank among other plants in Illinois
- #3 of 45
- EIA plant code
- 57072
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| G-1 | All Other | 78 MW | 78 MW | 2010 | 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
| GSG LLC | Wind | 80 MW |
| Lone Tree Wind, LLC | Wind | 79 MW |
| Mendota Hills, LLC | Wind | 76 MW |
| Moline | Natural gas | 76 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 78 MW solar plant and a 78 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