Spillertown CSG 1 LLC
Solar power plant · Williamson County, Illinois
Nameplate capacity
5.0 MW
Rank in Illinois
#250
of 655 plants
In service since
2026
August 2026
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Dimension Energy LLC
- County
- Williamson County
- Generating units
- 1
- Share of state capacity
- 0.01%
- Rank among solar plants in Illinois
- #90 of 458
- EIA plant code
- 69848
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SPIL1 | Solar Photovoltaic | 5.0 MW | 5.0 MW | 2026 | 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
| Skyline | Solar | 5.0 MW |
| South Belleville Solar, LLC | Solar | 5.0 MW |
| Spillertown CSG 2 LLC | Solar | 5.0 MW |
| St. Clair Solar 5 | Solar | 5.0 MW |
About this data
From EIA’s inventory of operable generators, August 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 5.0 MW solar plant and a 5.0 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