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Largest hydroelectric power plants in NYISO

Conventional and pumped-storage hydroelectric plants ranked by EIA-reported nameplate capacity. Rankings use EIA-anchored plant records in NYISO.

Plants
158
Ranked operating records
EIA nameplate capacity
5.7 GW
Sum across this peer set
Largest
2,429.1 MW
Robert Moses Niagara

Capacity ranking

158 plants
RankPlantCapacity
1Robert Moses NiagaraNew York Power Authority2,429.1 MW
2Blenheim GilboaNew York Power Authority1,000 MW
3Robert Moses Power DamNew York Power Authority855 MW
4Lewiston NiagaraNew York Power Authority220 MW
5Curtis Palmer HydroelectricPalmer Hydroelectric59 MW
6Spier FallsErie Boulevard Hydropower LP47 MW
7Hudson Falls Hydroelectric ProjectBoralex Hydro Operations Inc44 MW
8School StreetErie Boulevard Hydropower LP38.8 MW
9Stewarts BridgeErie Boulevard Hydropower LP38.5 MW
10Sherman IslandErie Boulevard Hydropower LP36.3 MW
11Bennetts BridgeErie Boulevard Hydropower LP36 MW
12Glen Park Hydroelectric ProjectEagle Creek Renewable Energy, LLC32.6 MW
13ColtonErie Boulevard Hydropower LP30 MW
14StarkErie Boulevard Hydropower LP26 MW
15NeversinkNew York Power Authority25 MW
16Rainbow Falls HydroErie Boulevard Hydropower LP25 MW
17Five FallsErie Boulevard Hydropower LP24 MW
18E J WestErie Boulevard Hydropower LP22 MW
19Trenton FallsErie Boulevard Hydropower LP21.9 MW
20South ColtonErie Boulevard Hydropower LP21 MW
21BeardsleeErie Boulevard Hydropower LP20 MW
22ProspectErie Boulevard Hydropower LP19 MW
23GrahamsvilleNew York Power Authority18 MW
24Upper MechanicvilleNew York State Elec & Gas Corp16.4 MW
25Browns FallsErie Boulevard Hydropower LP16 MW
26SchaghticokeErie Boulevard Hydropower LP16 MW
27Soft MapleErie Boulevard Hydropower LP16 MW
28BlakeErie Boulevard Hydropower LP15 MW
29SturgeonCentral Hudson Gas & Elec Corp14.4 MW
30South Glens Falls HydroelectricBoralex Hydro Operations Inc13.8 MW
31Little Falls HydroEagle Creek Renewable Energy, LLC13 MW
32Moose RiverEONY Generation Limited12.6 MW
33DeferietErie Boulevard Hydropower LP12 MW
34CrescentNew York Power Authority11.6 MW
35Vischer FerryNew York Power Authority11.6 MW
36New York State Dam HydroBoralex Hydro Operations Inc11.4 MW
37RioEagle Creek Renewable Energy, LLC10.8 MW
38Dahowa HydroGR Catalyst Two LLC10.5 MW
39GranbyErie Boulevard Hydropower LP10 MW
40MinettoErie Boulevard Hydropower LP10 MW
41High DamOswego City of9.1 MW
42Beebee Island Hydro PlantErie Boulevard Hydropower LP9 MW
43Pyrites PlantCentral Rivers Power US, LLC8.2 MW
44WatertownCity of Watertown - (NY)8.1 MW
45Lighthouse HillErie Boulevard Hydropower LP8 MW
46MoshierErie Boulevard Hydropower LP8 MW
47Swinging Bridge 2Eagle Creek Renewable Energy, LLC8 MW
48VarickErie Boulevard Hydropower LP8 MW
49West Delaware Tunnel PlantErie Boulevard Hydropower LP7.5 MW
50Brookfield Power Glen Falls HydroErie Boulevard Hydropower LP7.4 MW

Capacity is EIA-reported nameplate capacity, not seasonal capability or available operating capacity. A plant can include multiple generators and technologies; hybrid plants may appear in multiple peer groups.