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Deweys Mill

Hydro power plant · Windsor County, Vermont

Nameplate capacity
3.0 MW
Rank in Vermont
#53
of 117 plants
In service since
1989
June 1989

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Green Mountain Power Corp
County
Windsor County
Generating units
2
Share of state capacity
0.33%
Rank among hydro plants in Vermont
#24 of 45
EIA plant code
10137

Generating units

Individual generating units at Deweys Mill
UnitTechnologyNameplateSummerOnlineStatus
GEN1Conventional Hydroelectric2.5 MW2.4 MW1989Operating
GEN2Conventional Hydroelectric0.5 MW0.5 MW1989Operating

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

Similarly sized plants in Vermont

Middlesex 2Hydro3.2 MW
Clark FallsHydro3.0 MW
Gorge 18Hydro3.0 MW
WeybridgeHydro3.0 MW

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 3.0 MW solar plant and a 3.0 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 Vermont power plants · What Vermont actually generates