Double Back Diamond
Solar power plant · Sangamon County, Illinois
Nameplate capacity
593 MW
Rank in Illinois
#25
of 580 plants
In service since
2024
November 2024
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Double Back Diamond Solar Power, LLC
- County
- Sangamon County
- Generating units
- 1
- Share of state capacity
- 1.13%
- Rank among solar plants in Illinois
- #1 of 383
- EIA plant code
- 66624
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| DBD | Solar Photovoltaic | 593 MW | 593 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
| Cordova Energy | Natural gas | 611 MW |
| Zion Energy Center | Natural gas | 597 MW |
| Venice | Natural gas | 586 MW |
| Elwood Energy LLC | Natural gas | 576 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 593 MW solar plant and a 593 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