Double Back Diamond
Double Back Diamond is a solar plant in Sangamon County, Illinois, operated by Double Back Diamond Solar Power, LLC. Among the 7,112 solar plants in the country it is the fifth-largest. It is the biggest of Illinois’s 405 solar plants. Of its current capacity, 593 MW came online between 2023 and 2025.
Nameplate capacity, 2025
593 MW
593 MW net summer capacity
1 operable unit
- Solar photovoltaic593 MW100%
Unit by unit, 2024 to 2025
operating in 2025bar height follows unit size
Unit DBD Solar photovoltaic, 593 MW, 2024
Among Illinois’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Braidwood Generation Station2,450 MW
- 2Byron Generating Station2,450 MW
- 3LaSalle Generating Station2,340 MW
- 23Cordova Energy611 MW
- 24Zion Energy Center597 MW
- 25Double Back Diamondthis plant
- 26Venice586 MW
- 27Elwood Energy LLC576 MW
Other rankings
- All US power plants
- 624th of 14,286
- Power plants in Illinois
- 25th of 601
- Plants in the MISO (Midcontinent) balancing area
- 94th of 2,383
- Biggest single unit, among Illinois’s plants
- 14th of 601
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| DBD | Solar photovoltaic | 593 MW | 593 MW | 2024 | Operating |
Grid and site
- Balancing area
- MISO (Midcontinent)
- Reliability region
- SERC Reliability Corporation
- Highest grid connection voltage
- 345 kV
- Nearest town on record
- Virden
- Operator type
- Independent producer
- Coordinates
- 39.537°N, 89.810°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| USS Solar Brick | Solar | 2 MW | 13.0 mi south |
| Viking Solar CSG | Solar | 2 MW | 13.5 mi southwest |
| Kincaid Generation LLC | Coal | 1,319 MW | 17.1 mi east |
| Dallman | Coal | 230 MW | 18.6 mi northeast |
| Lakeside | Oil and petroleum | 5.4 MW | 18.8 mi northeast |
| Reynolds | Oil and petroleum | 17.5 MW | 20.7 mi northeast |
| Lincoln Land Wind | Wind | 302 MW | 21.1 mi north |
| Factory | Oil and petroleum | 26.6 MW | 21.9 mi northeast |