Power plants in New Hampshire

New Hampshire has 61 power plants of 1 MW or more in the 2025 EIA-860 data, with 4,582 MW of nameplate capacity, the 45th-largest total among the 50 states and DC. Natural gas accounts for 31% of that capacity. The biggest single site is Seabrook at 1,242 MW. Units that came online from 2020 to 2025 add 20.6 MW, led by battery storage at 68%. Units retired since 2016 at plants still operating total 154 MW, most of it coal.

Natural gas1,400 MW31%
Nuclear1,242 MW27%
Oil and petroleum521 MW11%
Hydroelectric516 MW11%
Coal459 MW10%
Wind214 MW4.7%
Biomass and waste211 MW4.6%
Battery storage14 MW0.3%
Solar4.4 MW0.1%

What is running, by the decade it came online

NuclearCoalNatural gasOil and petroleumHydroelectricWindSolarBattery storageBiomass and waste

Columns above the line show capacity still operating in 2025, stacked by fuel. Below the line: capacity retired in each decade at plants that still operate.

The 25 largest plants

Rank	Plant	Runs on	Capacity	First unit	Operator
1	Seabrook	Nuclear	1,242 MW	1990	NextEra Energy Seabrook LLC
2	Granite Ridge	Natural gas	790 MW	2003	Granite Ridge Energy LLC
3	Newington Energy Center	Natural gas	606 MW	2002	Essential Power Operating Services, LLC
4	Merrimack	Coal	496 MW	1960	Granite Shore Power
5	Newington	Oil and petroleum	414 MW	1974	Granite Shore Power
6	S C Moore	Hydroelectric	195 MW	1957	Great River Hydro, LLC
7	Comerford	Hydroelectric	168 MW	1930	Great River Hydro, LLC
8	Granite Reliable Power	Wind	99 MW	2012	NexteraEnergy
9	Burgess BioPower	Biomass and waste	75 MW	2013	Berlin Station, LLC
10	Groton Wind LLC	Wind	48 MW	2012	Avangrid Power LLC
11	Berlin Gorham	Hydroelectric	44.3 MW	1914	Great Lakes Hydro America LLC
12	Antrim Wind	Wind	28.8 MW	2019	Antrim Wind Energy LLC
13	NE Renewable Tamworth, LLC	Biomass and waste	25 MW	1987	NE Renewable Tamworth, LLC
14	Lempster Wind LLC	Wind	24 MW	2008	Avangrid Power LLC
15	Schiller	Oil and petroleum	21.2 MW	1970	Granite Shore Power
16	Bridgewater Power LP	Biomass and waste	20 MW	1987	Bridgewater Power Co LP
17	NE Renewable Springfield, LLC	Biomass and waste	20 MW	1987	NE Renewable Springfield, LLC
18	NE Renewable Whitefield, LLC	Biomass and waste	19.9 MW	1988	NE Renewable Whitefield, LLC
19	White Lake	Oil and petroleum	18.6 MW	1968	Granite Shore Power
20	Lost Nation	Oil and petroleum	18 MW	1969	Granite Shore Power
21	NE Renewable Bethlehem, LLC	Biomass and waste	17.5 MW	1986	NE Renewable Bethlehem, LLC
22	Amoskeag	Hydroelectric	16 MW	1922	Central Rivers Power NH, LLC
23	Smith (NH)	Hydroelectric	15 MW	1948	Central Rivers Power NH, LLC
24	Jericho Power	Wind	14.3 MW	2016	Jericho Power LLC
25	Wheelabrator Concord Facility	Biomass and waste	14 MW	1989	Wheelabrator Environmental Systems

All 61 plants in the finder

Largest plant for each main fuel

Main fuel	Plants	Capacity	Largest plant	Its capacity
Natural gas	3	1,400 MW	Granite Ridge	790 MW
Nuclear	1	1,242 MW	Seabrook	1,242 MW
Oil and petroleum	7	484 MW	Newington	414 MW
Hydroelectric	32	530 MW	S C Moore	195 MW
Coal	1	496 MW	Merrimack	496 MW
Wind	5	214 MW	Granite Reliable Power	99 MW
Biomass and waste	10	211 MW	Burgess BioPower	75 MW
Solar	2	4.4 MW	Merrimack Solar Farm, LLC	2.4 MW

Balancing areas

Area	Plants	Capacity
ISO New England	61	4,582 MW

Biggest operators here

Operator	Plants	Capacity
NextEra Energy Seabrook LLC	1	1,242 MW
Granite Shore Power	5	968 MW
Granite Ridge Energy LLC	1	790 MW
Essential Power Operating Services, LLC	1	606 MW
Great River Hydro, LLC	2	363 MW
NexteraEnergy	1	99 MW
Berlin Station, LLC	1	75 MW
Avangrid Power LLC	2	72 MW
Central Rivers Power NH, LLC	8	65.2 MW
Great Lakes Hydro America LLC	1	44.3 MW