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Medway Hydro

Hydro power plant · Penobscot County, Maine

Nameplate capacity
4.0 MW
Rank in Maine
#180
of 274 plants
In service since
2023
January 2023

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Brookfield Black Bear Hydro, LLC
County
Penobscot County
Generating units
5
Share of state capacity
0.06%
Rank among hydro plants in Maine
#29 of 48
EIA plant code
55288

Generating units

Individual generating units at Medway Hydro
UnitTechnologyNameplateSummerOnlineStatus
MW01Conventional Hydroelectric0.8 MW0.7 MW2023Operating
MW02Conventional Hydroelectric0.8 MW0.7 MW2023Operating
MW03Conventional Hydroelectric0.8 MW0.7 MW2023Operating
MW04Conventional Hydroelectric0.8 MW0.9 MW2025Operating
MW05Conventional Hydroelectric0.8 MW0.9 MW2025Operating

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 Maine

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 4.0 MW solar plant and a 4.0 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 Maine power plants · What Maine actually generates