1st largest plant in Maryland · 93rd nationally
Calvert Cliffs Nuclear Power Plant is a nuclear power plant in Maryland with a nameplate capacity of 1,850 MW. It generates roughly 15.0M MWh per year — enough to power about 1,427,023 average U.S. homes.
Its capacity factor of 92% means it runs nearly around-the-clock as baseload generation.
| Plant Name | Calvert Cliffs Nuclear Power Plant |
|---|---|
| Operator | Constellation Nuclear |
| City | Lusby |
| County | Calvert County |
| State | Maryland |
| ZIP | 20657 |
| Coordinates | 38.43440, -76.44170 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 2 | Nuclear | Uranium | 932 MW | Operating | 1977 |
| 1 | Nuclear | Uranium | 918 MW | Operating | 1975 |
| 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.