1st largest plant in New Hampshire · 219th nationally
Seabrook is a nuclear power plant in New Hampshire with a nameplate capacity of 1,242 MW. It generates roughly 9.5M MWh per year — enough to power about 908,074 average U.S. homes.
Its capacity factor of 88% means it runs nearly around-the-clock as baseload generation.
| Plant Name | Seabrook |
|---|---|
| Operator | Nextera Energy Seabrook Llc |
| City | Seabrook |
| County | Rockingham County |
| State | New Hampshire |
| ZIP | 03874 |
| Coordinates | 42.89917, -70.84889 |
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 | 1,242 MW | Operating | 1990 |
| Owner | Location | Share |
|---|---|---|
| Nextera Energy Seabrook Llc | Juno Beach, FL | 8823.0% |
| Massachusetts Mun Wholes Electric Co | Ludlow, MA | 1159.0% |
| City Of Taunton | Taunton, MA | 10.0% |
| Town Of Hudson - (Ma) | Hudson, MA | 8.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| NERC Region | NPCC |
|---|---|
| Balancing Authority | Iso New England 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.