Largest power plants in New Hampshire

The 50 largest power plants in New Hampshire by nameplate capacity, from EIA-860M for August 2026, with 2025 net generation from EIA-923.

Plants

Nameplate capacity

4,220 MW

Net generation, 2025

18.9 TWh

48 of 50 plants reported

Largest

Seabrook

1,242 MW

Top 50 by nameplate capacity

#	Plant	MW	2025 net generation, GWhGWh, 2025	Capacity factor	Operator
1	SeabrookRockingham County · Nuclear	1,242	10,910	100.3%	NextEra Energy Seabrook LLC
2	Granite RidgeRockingham County · Natural gas	790	3,398	49.1%	Granite Ridge Energy LLC
3	Newington Energy CenterRockingham County · Natural gas	606	1,914	36.1%	Essential Power Operating Services, LLC
4	NewingtonRockingham County · Oil	414	132	–	Granite Shore Power
5	S C MooreGrafton County · Hydro	195	255	14.9%	Great River Hydro, LLC
6	ComerfordGrafton County · Hydro	168	297	20.2%	Great River Hydro, LLC
7	MerrimackMerrimack County · Coal and oil	151	–	–	Granite Shore Power
8	Granite Reliable PowerCoos County · Wind	99	193	22.3%	NexteraEnergy
9	Burgess BioPowerCoos County · Wood biomass	75	390	59.4%	Berlin Station, LLC
10	Groton Wind LLCGrafton County · Wind	48	115	27.3%	Avangrid Power LLC
11	Berlin GorhamCoos County · Hydro and battery storage	44	101	38.7%	Great Lakes Hydro America LLC
12	Antrim WindHillsborough County · Wind	29	77.9	30.9%	Antrim Wind Energy LLC
13	NE Renewable Tamworth, LLCCarroll County · Wood biomass	25	77.8	35.5%	NE Renewable Tamworth, LLC
14	Lempster Wind LLCSullivan County · Wind	24	67.7	32.2%	Avangrid Power LLC
15	SchillerRockingham County · Oil	21	–	–	Granite Shore Power
16	Bridgewater Power LPGrafton County · Wood biomass	20	103	58.8%	Bridgewater Power Co LP
17	NE Renewable Springfield, LLCSullivan County · Wood biomass	20	73.3	41.9%	NE Renewable Springfield, LLC
18	NE Renewable Whitefield, LLCCoos County · Wood biomass	20	59.3	34.0%	NE Renewable Whitefield, LLC
19	White LakeCarroll County · Oil	19	0.6	0.4%	Granite Shore Power
20	Lost NationCoos County · Oil	18	0.4	0.3%	Granite Shore Power
21	NE Renewable Bethlehem, LLCGrafton County · Wood biomass	18	0.0	–	NE Renewable Bethlehem, LLC
22	AmoskeagHillsborough County · Hydro	16	64.9	46.3%	Central Rivers Power NH, LLC
23	Smith (NH)Coos County · Hydro	15	87.5	66.6%	Central Rivers Power NH, LLC
24	Jericho PowerCoos County · Wind	14	22.6	18.1%	Jericho Power LLC
25	Wheelabrator Concord FacilityMerrimack County · Municipal solid waste	14	94.5	77.0%	Wheelabrator Environmental Systems
26	Garvins FallsMerrimack County · Hydro	12	24.8	22.8%	Central Rivers Power NH, LLC
27	Pontook Hydro FacilityCoos County · Hydro	11	50.9	55.4%	Pontook Operating LP
28	Turnkey Landfill Gas RecoveryStrafford County · Landfill gas	9.2	38.5	47.8%	WM Renewable Energy LLC
29	Ayers IslandGrafton County · Hydro	8.4	36.3	49.3%	Central Rivers Power NH, LLC
30	UNH 7.9 MW PlantStrafford County · Landfill gas	7.9	53.9	77.9%	Emcor Energy Services
31	Dartmouth College Heating PlantGrafton County · Oil	7.0	10.2	16.7%	Dartmouth College
32	Eastman FallsMerrimack County · Hydro	6.4	21.9	39.0%	Central Rivers Power NH, LLC
33	Hampton FacilityRockingham County · Natural gas	5.0	26.1	59.6%	Foss Manufacturing Company LLC
34	Dodge Falls AssociatesGrafton County · Hydro	5.0	21.6	49.4%	Dodge Falls Associates LP
35	Penacook Lower FallsMerrimack County · Hydro	4.6	16.1	39.8%	Briar-Hydro Associates
36	Rolfe Canal HydroMerrimack County · Hydro	4.3	16.3	43.3%	Briar-Hydro Associates
37	Gregg FallsHillsborough County · Hydro	3.5	7.7	25.2%	Eagle Creek Renewable Energy, LLC
38	Penacook Upper Falls HydroMerrimack County · Hydro	3.4	11.1	37.3%	Briar-Hydro Associates
39	JackmanHillsborough County · Hydro	3.2	7.4	26.4%	Central Rivers Power NH, LLC
40	Mine Falls Generating StationHillsborough County · Hydro	3.0	9.1	34.5%	City of Nashua - (NH)
41	Errol Hydroelectric ProjectCoos County · Hydro	3.0	13.6	51.9%	Errol Hydroelectric Co LLC
42	Pembroke HydroMerrimack County · Hydro	2.7	6.7	28.3%	Eagle Creek Renewable Energy, LLC
43	Nashua PlantHillsborough County · Landfill gas	2.4	13.1	62.5%	NextEra Renewable Fuels, LLC
44	Clement Dam Hydro LLCBelknap County · Hydro	2.4	6.4	30.6%	Eagle Creek Renewable Energy, LLC
45	Merrimack Solar Farm, LLCHillsborough County · Solar	2.4	3.3	15.7%	Merrimack Solar Farm
46	GorhamCoos County · Hydro	2.2	8.4	43.4%	Central Rivers Power NH, LLC
47	Blackwater Rd SolarStrafford County · Solar	2.0	0.0	–	Blackwater Rd Solar LLC
48	Stevens Mills DamMerrimack County · Hydro	1.9	3.6	21.8%	Eagle Creek Renewable Energy, LLC
49	China Mill HydroMerrimack County · Hydro	1.7	2.6	17.2%	New Hampshire Hydro Associates
50	HooksettMerrimack County · Hydro	1.6	6.3	44.7%	Central Rivers Power NH, LLC

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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