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Deferiet

Hydro power plant · Jefferson County, New York

Nameplate capacity
12 MW
Rank in New York
#197
of 1,152 plants
In service since
2025
January 2025

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Erie Boulevard Hydropower LP
County
Jefferson County
Generating units
3
Share of state capacity
0.03%
Rank among hydro plants in New York
#36 of 165
EIA plant code
2552

Generating units

Individual generating units at Deferiet
UnitTechnologyNameplateSummerOnlineStatus
1Conventional Hydroelectric4.0 MW3.6 MW2025Operating
2Conventional Hydroelectric4.0 MW3.6 MW2025Operating
3Conventional Hydroelectric4.0 MW3.6 MW2025Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

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About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 12 MW solar plant and a 12 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All New York power plants · What New York actually generates