LaSalle Generating Station
LaSalle Generating Station is a nuclear plant in LaSalle County, Illinois, operated by Constellation Nuclear. By nameplate capacity it is the 47th-largest power plant in the United States and the third-largest in Illinois. Its biggest unit, rated at 1,170 MW, is the third-largest single generator in Illinois.
Nameplate capacity, 2025
2,340 MW
2,264 MW net summer capacity
2 operable units
- Nuclear2,340 MW100%
Unit by unit, 1984 to 2025
operating in 2025bar height follows unit size
Unit 1 Nuclear, 1,170 MW, 1984
Unit 2 Nuclear, 1,170 MW, 1984
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 Stationthis plant
- 4Dresden Generating Station2,019 MW
- 5Quad Cities Generating Station2,019 MW
Other rankings
- US nuclear plants
- 17th of 56
- Nuclear plants in Illinois
- 3rd of 6
- Plants in the PJM Interconnection balancing area
- 10th of 2,049
- Plants run by Constellation Nuclear
- 4th of 13
Operable units
By the year its oldest working unit started, it is the third-oldest of Illinois’s 6 nuclear plants.
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 1,170 MW | 1,130 MW | 1984 | Operating |
| 2 | Nuclear | 1,170 MW | 1,134 MW | 1984 | Operating |
Grid and site
- Balancing area
- PJM Interconnection
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 345 kV
- Water source
- Illinois River
- Nearest town on record
- Marseilles
- Operator type
- Independent producer
- Coordinates
- 41.245°N, 88.669°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Grand Ridge Wind Energy Center | Wind | 210 MW | 1.5 mi southwest |
| Grand Ridge Battery Projects | Battery storage | 36 MW | 1.5 mi southwest |
| LaSalle Solar 1 | Solar | 2 MW | 5.8 mi south |
| Blackstone Wind Farm LLC | Wind | 106 MW | 7.0 mi south |
| Grand Ridge Solar Farm | Solar | 20 MW | 8.4 mi southwest |
| Tully 1 | Solar | 2 MW | 9.3 mi northeast |
| Blackstone Wind Farm II LLC | Wind | 200 MW | 10.2 mi southeast |
| Dayton Hydro | Hydroelectric | 3.6 MW | 11.7 mi northwest |