University Park South
Natural gas power plant · Will County, Illinois
Nameplate capacity
353 MW
Rank in Illinois
#35
of 580 plants
In service since
2001
June 2001
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- University Park Energy LLC
- County
- Will County
- Generating units
- 6
- Share of state capacity
- 0.67%
- Rank among natural gas plants in Illinois
- #23 of 72
- EIA plant code
- 55250
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| UPG1 | Natural Gas Fired Combustion Turbine | 59 MW | 50 MW | 2001 | Operating |
| UPG2 | Natural Gas Fired Combustion Turbine | 59 MW | 50 MW | 2001 | Operating |
| UPG3 | Natural Gas Fired Combustion Turbine | 59 MW | 50 MW | 2001 | Operating |
| UPG4 | Natural Gas Fired Combustion Turbine | 59 MW | 50 MW | 2001 | Operating |
| UPG5 | Natural Gas Fired Combustion Turbine | 59 MW | 50 MW | 2001 | Operating |
| UPG6 | Natural Gas Fired Combustion Turbine | 59 MW | 50 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
| Pinckneyville | Natural gas | 380 MW |
| Crete Energy Venture LLC | Natural gas | 356 MW |
| Archer Daniels Midland Decatur | Coal | 335 MW |
| NRG Rockford I | Natural gas | 316 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 353 MW solar plant and a 353 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