United States · 42.899, -70.849Seabrook
Seabrook, nuclear power plant in United States, operates one pressurized water reactor with 1,246 MW net installed capacity and has been in service since 1990.
Unit Seabrook 1 has been operating for 36 years, since 1990. Its 1,246 MW net are enough to supply about 3,920,000 households.
- Country
- United States
- Units
- 1
- Technology
- PWR
- Net capacity
- 1,246 MWe
- First grid connection
- 1990
- Operator
- Nextera Energy Resources
- Owner
- Nextera Energy Resources LLC
- Status
- Operating
See also: alerts for this plant · every plant in United States · Nuclear power plants in New Hampshire · Vendor: Westinghouse · every PWR reactor · how a PWR works
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Licence until | Load factor |
|---|---|---|---|---|---|---|---|---|---|---|
| Seabrook 1 | Pressurized water (PWR) | Westinghouse 4-loop (WH 4LP) | Operating | 1,246 | 3,648 | Jul 7, 1976 | May 29, 1990 | — | Mar 15, 2050 | 88.4 % (2024) |
Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026
Seabrook 1, a 1,246 MWe PWR (Westinghouse 4-loop (WH 4LP)), started construction in 1976, was connected to the grid in 1990 and is still operating, with a 88.4% load factor in 2024.
Operator: Nextera Energy Resources.
Owner: Nextera Energy Resources LLC.