Largest hydroelectric power plants in ISO-NE

170 ranked plants with 3.7 GW of EIA nameplate capacity; the largest is Northfield Mountain at .

Largest hydroelectric power plants in ISO-NE · Ask the Grid

Hydroelectric capacity ranking

170 matching plants · ranked by nameplate capacity

Rank	Plant	Capacity	Type	Operator	Location
1	Northfield MountainFirstLight Power Resources, Inc. - MADetailed profile	1,168 MW	Hydroelectric Pumped Storage	FirstLight Power Resources, Inc. - MA	Franklin County
2	Bear SwampBear Swamp Power Company LLCDetailed profile	666 MW	Hydroelectric Pumped Storage	Bear Swamp Power Company LLC	Berkshire County
3	S C MooreGreat River Hydro, LLCDetailed profile	195.4 MW	Conventional Hydroelectric	Great River Hydro, LLC	Grafton County
4	ComerfordGreat River Hydro, LLCDetailed profile	167.8 MW	Conventional Hydroelectric	Great River Hydro, LLC	Grafton County
5	Great Lakes Hydro America - MEGreat Lakes Hydro America LLC	148.1 MW	Conventional Hydroelectric, Batteries	Great Lakes Hydro America LLC	Penobscot County
6	Harris HydroBrookfield White Pine Hydro LLC	76.4 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Somerset County
7	Wyman HydroBrookfield White Pine Hydro LLC	72 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Somerset County
8	CabotFirstLight Power Resources, Inc. - MA	61.8 MW	Conventional Hydroelectric	FirstLight Power Resources, Inc. - MA	Franklin County
9	Rumford Falls Hydro FacilityBrookfield Power New EnglandDetailed profile	48.2 MW	Conventional Hydroelectric, Batteries	Brookfield Power New England	Oxford County
10	Bellows FallsGreat River Hydro, LLC	40.8 MW	Conventional Hydroelectric	Great River Hydro, LLC	Windham County
11	ShepaugFirstLight Power Resources Services LLC	37.2 MW	Conventional Hydroelectric	FirstLight Power Resources Services LLC	New Haven County
12	Vernon DamGreat River Hydro, LLC	35.9 MW	Conventional Hydroelectric	Great River Hydro, LLC	Windham County
13	WilderGreat River Hydro, LLC	35.6 MW	Conventional Hydroelectric	Great River Hydro, LLC	Windsor County
14	HarrimanGreat River Hydro, LLC	33.6 MW	Conventional Hydroelectric	Great River Hydro, LLC	Windham County
15	Hadley FallsCity of Holyoke Gas and Elec Dept - (MA)	33.4 MW	Conventional Hydroelectric	City of Holyoke Gas and Elec Dept - (MA)	Hampden County
16	Cobble MountainCity of Holyoke Gas and Elec Dept - (MA)	33 MW	Conventional Hydroelectric	City of Holyoke Gas and Elec Dept - (MA)	Hampden County
17	Rocky River (CT)FirstLight Power Resources Services LLC	31 MW	Hydroelectric Pumped Storage	FirstLight Power Resources Services LLC	Litchfield County
18	StevensonFirstLight Power Resources Services LLCDetailed profile	30.5 MW	Conventional Hydroelectric	FirstLight Power Resources Services LLC	Fairfield County
19	Anson Abenaki HydrosEagle Creek Renewable Energy, LLC	29 MW	Conventional Hydroelectric	Eagle Creek Renewable Energy, LLC	Somerset County
20	Charles E MontyBrookfield White Pine Hydro LLC	28.4 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Androscoggin County
21	Sheldon Springs HydroelectricCentral Rivers Power US, LLC	25.2 MW	Conventional Hydroelectric	Central Rivers Power US, LLC	Franklin County
22	Boott HydropowerBoott Hydro, LLC - Hybrid	22.9 MW	Conventional Hydroelectric	Boott Hydro, LLC - Hybrid	Middlesex County
23	Brunswick HydroBrookfield White Pine Hydro LLC	19.6 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Cumberland County
24	Worumbo Hydro StationEagle Creek Renewable Energy, LLC	19.4 MW	Conventional Hydroelectric	Eagle Creek Renewable Energy, LLC	Androscoggin County
25	Gulf IslandBrookfield White Pine Hydro LLC	19.2 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Androscoggin County
26	Deerfield 5Great River Hydro, LLC	17.5 MW	Conventional Hydroelectric	Great River Hydro, LLC	Berkshire County
27	SkeltonBrookfield White Pine Hydro LLC	16.8 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	York County
28	AmoskeagCentral Rivers Power NH, LLC	16 MW	Conventional Hydroelectric	Central Rivers Power NH, LLC	Hillsborough County
29	Hydro Kennebec ProjectHydro Kennebec LLC	15.4 MW	Conventional Hydroelectric	Hydro Kennebec LLC	Kennebec County
30	Smith (NH)Central Rivers Power NH, LLC	15 MW	Conventional Hydroelectric	Central Rivers Power NH, LLC	Coos County
31	Lawrence Hydroelectric AssociatesCentral Rivers Power US, LLC	14.8 MW	Conventional Hydroelectric	Central Rivers Power US, LLC	Essex County
32	Pejepscot Hydroelectric ProjectTopsham Hydro Partners	13.5 MW	Conventional Hydroelectric	Topsham Hydro Partners	Sagadahoc County
33	West Enfield HydroBrookfield Black Bear Hydro, LLC	13 MW	Conventional Hydroelectric	Brookfield Black Bear Hydro, LLC	Penobscot County
34	Williams HydroBrookfield White Pine Hydro LLC	13 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Somerset County
35	Garvins FallsCentral Rivers Power NH, LLC	12.4 MW	Conventional Hydroelectric	Central Rivers Power NH, LLC	Merrimack County
36	Weston HydroBrookfield White Pine Hydro LLC	12 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Somerset County
37	Highgate FallsVillage of Swanton - (VT)	11.6 MW	Conventional Hydroelectric	Village of Swanton - (VT)	Franklin County
38	Fife BrookBear Swamp Power Company LLC	11.2 MW	Conventional Hydroelectric	Bear Swamp Power Company LLC	Berkshire County
39	HiramBrookfield White Pine Hydro LLC	10.5 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Cumberland County
40	Pontook Hydro FacilityPontook Operating LP	10.5 MW	Conventional Hydroelectric	Pontook Operating LP	Coos County
41	McindoesGreat River Hydro, LLC	10.4 MW	Conventional Hydroelectric	Great River Hydro, LLC	Caledonia County
42	Otis HydroEagle Creek Renewable Energy, LLC	10.2 MW	Conventional Hydroelectric	Eagle Creek Renewable Energy, LLC	Franklin County
43	International Paper Livermore HydroEagle Creek Renewable Energy, LLC	9.2 MW	Conventional Hydroelectric	Eagle Creek Renewable Energy, LLC	Androscoggin County
44	Falls VillageFirstLight Power Resources Services LLC	9 MW	Conventional Hydroelectric	FirstLight Power Resources Services LLC	Litchfield County
45	Ellsworth Hydro StationBrookfield Black Bear Hydro, LLC	8.9 MW	Conventional Hydroelectric	Brookfield Black Bear Hydro, LLC	Hancock County
46	Bolton FallsGreen Mountain Power Corp	8.8 MW	Conventional Hydroelectric	Green Mountain Power Corp	Washington County
47	ShawmutBrookfield White Pine Hydro LLC	8.8 MW	Conventional Hydroelectric	Brookfield White Pine Hydro LLC	Somerset County
48	Ayers IslandCentral Rivers Power NH, LLC	8.4 MW	Conventional Hydroelectric	Central Rivers Power NH, LLC	Grafton County
49	Derby HydroMcCallum Enterprises I LP	8 MW	Conventional Hydroelectric	McCallum Enterprises I LP	Fairfield County
50	Rainbow (CT)Farmington River Power Company	8 MW	Conventional Hydroelectric	Farmington River Power Company	Hartford County