Power plants in Rockingham County, New Hampshire
6 operating power plants in Rockingham County, New Hampshire, with 3,078 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
6
Nameplate capacity
3,078 MW
Net generation, 2025
16.4 TWh
5 of 6 plants reported
Largest power plants in Rockingham County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | SeabrookNuclear | 1,242 | 10,910 | 100.3% |
| 2 | Granite RidgeNatural gas | 790 | 3,398 | 49.1% |
| 3 | Newington Energy CenterNatural gas | 606 | 1,914 | 36.1% |
| 4 | NewingtonOil | 414 | 132 | – |
| 5 | SchillerOil | 21 | – | – |
| 6 | Hampton FacilityNatural gas | 5.0 | 26.1 | 59.6% |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
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