3rd largest plant in Illinois · 51st nationally
Lasalle Generating Station is a nuclear power plant in Illinois with a nameplate capacity of 2,340 MW. It generates roughly 19.4M MWh per year — enough to power about 1,851,854 average U.S. homes.
Its capacity factor of 95% means it runs nearly around-the-clock as baseload generation.
| Plant Name | Lasalle Generating Station |
|---|---|
| Operator | Constellation Nuclear |
| City | Marseilles |
| County | Lasalle County |
| State | Illinois |
| ZIP | 61341 |
| Coordinates | 41.24550, -88.66907 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Nuclear | Uranium | 1,170 MW | Operating | 1984 |
| 2 | Nuclear | Uranium | 1,170 MW | Operating | 1984 |
| NERC Region | RFC |
|---|---|
| Balancing Authority | Pjm Interconnection, Llc |
Nuclear plants generate carbon-free baseload electricity by fissioning uranium fuel inside a reactor. They run nearly around-the-clock — typical capacity factors above 90% — and a single facility can power millions of homes. Spent fuel is stored on-site in dry casks. NRC oversees safety; emergency planning zones extend 10 miles from the reactor.