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Gulf Island

Hydro power plant · Androscoggin County, Maine

Nameplate capacity
19 MW
Rank in Maine
#51
of 274 plants
In service since
2026
January 2026

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Brookfield White Pine Hydro LLC
County
Androscoggin County
Generating units
3
Share of state capacity
0.31%
Rank among hydro plants in Maine
#9 of 48
EIA plant code
1491

Generating units

Individual generating units at Gulf Island
UnitTechnologyNameplateSummerOnlineStatus
GI1Conventional Hydroelectric6.4 MW7.2 MW2026Operating
GI2Conventional Hydroelectric6.4 MW8.1 MW2026Operating
GI3Conventional Hydroelectric6.4 MW7.9 MW2026Operating

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 19 MW solar plant and a 19 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