Byron Generating Station
Byron Generating Station is a nuclear plant in Ogle County, Illinois, operated by Constellation Nuclear. By nameplate capacity it is the 33rd-largest power plant in the United States and the largest in Illinois. Among the 56 nuclear plants in the country it is the tenth-largest. Its biggest unit, rated at 1,225 MW, is the largest single generator in Illinois.
Nameplate capacity, 2025
2,450 MW
2,300 MW net summer capacity
2 operable units
- Nuclear2,450 MW100%
Unit by unit, 1985 to 2025
operating in 2025bar height follows unit size
Unit 1 Nuclear, 1,225 MW, 1985
Unit 2 Nuclear, 1,225 MW, 1987
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 Stationthis plant
- 3LaSalle Generating Station2,340 MW
- 4Dresden Generating Station2,019 MW
Other rankings
- Nuclear plants in Illinois
- 1st of 6
- Plants in the PJM Interconnection balancing area
- 7th of 2,049
- Plants run by Constellation Nuclear
- 2nd of 13
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 1,225 MW | 1,164 MW | 1985 | Operating |
| 2 | Nuclear | 1,225 MW | 1,136 MW | 1987 | Operating |
Grid and site
- Balancing area
- PJM Interconnection
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 345 kV
- Water source
- Rock River
- Nearest town on record
- Byron
- Operator type
- Independent producer
- Coordinates
- 42.074°N, 89.282°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| USS Ducks Solar CSG | Solar | 5 MW | 5.5 mi southwest |
| OE IL Solar 3 | Solar | 2 MW | 5.6 mi southwest |
| CSG Mt. Morris 2, LLC | Solar | 2 MW | 7.8 mi west |
| SV CSG Mt Morris 3 LLC | Solar | 2 MW | 8.0 mi west |
| DG Harlem Solar | Solar | 2 MW | 9.6 mi northwest |
| Mt. Morris Solar CSG | Solar | 2 MW | 11.0 mi west |
| Rockford Solar Farm | Solar | 2.6 MW | 12.1 mi northeast |
| Rockford CS 1 | Solar | 2 MW | 12.3 mi northeast |