Gulf Island — Plant Summary
- EIA Plant ID
- 1491
- Capacity
- 19.2 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Androscoggin, ME
- Operating Since
- 1926
- Generators
- 3
- Operator
- Brookfield White Pine Hydro LLC
- Parent Company
- —
- Annual Generation
- 136,286 MWh
- Capacity Factor
- 77.6%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Gulf Island
OperatingHydro
Ranked #9 of 48 Hydro plants in ME#491 of 1454 nationally
19.2 MW Hydro operating in Androscoggin, ME — ISO New England Inc.
EIAWD
19.2 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1926
Operating Since
Location
Coordinates
44.1528, -70.2093
County
Androscoggin, ME
Nearby Plants
- Merrill Road SolarSolar4.6 MW · 1.1 km
- Deer RipsHydro6.5 MW · 2.1 km
- Charles E MontyHydro28.4 MW · 6.0 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Brookfield White Pine Hydro LLC | — | — |
| Owner(s) | Brookfield White Pine Hydro LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Gulf Island is a 19.2 MW hydroelectric power plant located in Androscoggin County, Maine. The plant began operating in 1926 and consists of 3 generators utilizing conventional hydroelectric technology. It is owned and operated by Brookfield White Pine Hydro LLC. Gulf Island is the 11th largest power plant in Maine out of 51 facilities, and ranks 499th nationally out of 1464 plants. The plant's primary fuel source is water (WAT).
In the most recent year with available data, Gulf Island generated 136,286 MWh of electricity, achieving a capacity factor of 77.6%. The plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
34 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
11.8K MWh
Latest Month
136.3K MWh
Annual Generation
77.6%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Gulf Island Substation · 115 kV
Substation Distance
0.198 km
Operator
Central Maine Power Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.GULFISLD34.5
Pricing Hub
.Z.MAINE
Node Source
Curated node match
News & Articles (10)Beta
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Grid·curtailment
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Last updated 2026-03-14
View all 10 articles