Coffeen Solar BESS
Solar power plant · Montgomery County, Illinois
Nameplate capacity
46 MW
Rank in Illinois
#132
of 580 plants
In service since
2024
December 2024
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Vistra Corp
- County
- Montgomery County
- Generating units
- 2
- Share of state capacity
- 0.09%
- Rank among solar plants in Illinois
- #26 of 383
- EIA plant code
- 68147
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | 44 MW | 44 MW | 2024 | Operating |
| 2 | Batteries | 2.0 MW | 2.0 MW | 2024 | 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
| Kimmel Road Solar, LLC | Solar | 50 MW |
| Salt Creek Township Solar, LLC | Solar | 50 MW |
| ExxonMobil Oil Joliet Refinery | Natural gas | 43 MW |
| Waterloo | Natural gas | 38 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 46 MW solar plant and a 46 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