New Hampshire
power plants.
New Hampshire has 19 operating power plants in the catalog, 3,830 MW in all. The catalog also marks 2 plants as Retired, with 644 MW of capacity. Its operating fleet leans on natural gas, which accounts for 47.3% of operating capacity, with nuclear second at 33.8%. The largest operating plant in the catalog is Seabrook Nuclear Power Plant (1,296 MW, recorded start year 1990).
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
New Hampshire electricity mix
Operating installed capacity by fuel. Each row gives megawatts and its share of the operating total.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Largest plants in New Hampshire
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Newest plants in New Hampshire
Operating plants with the most recent recorded start years. The catalog records years, not full commissioning dates.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Frequently asked questions
Where does New Hampshire get its electricity?
Across the 19 operating plants in the catalog, capacity is led by natural gas at 47.3%, then nuclear at 33.8%. These are installed-capacity shares, not live generation.
What is the largest power plant in New Hampshire?
The largest operating plant in the catalog for New Hampshire is Seabrook Nuclear Power Plant, a nuclear facility with 1,296 MW and a recorded start year of 1990.
How many power plants are in New Hampshire?
The catalog tracks 19 operating power plants in New Hampshire, with 3,830 MW in all. It also marks 2 plants as Retired, with 644 MW of capacity.