5th largest plant in Missouri · 225th nationally
Callaway is a nuclear power plant in Missouri with a nameplate capacity of 1,236 MW. It generates roughly 9.2M MWh per year — enough to power about 874,261 average U.S. homes.
Its capacity factor of 85% means it runs nearly around-the-clock as baseload generation.
| Plant Name | Callaway |
|---|---|
| Operator | Union Electric Co - (Mo) |
| City | Fulton |
| County | Callaway County |
| State | Missouri |
| ZIP | 65251 |
| Coordinates | 38.75892, -91.77884 |
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 | 1,236 MW | Operating | 1984 |
| NERC Region | SERC |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
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.