Somerset Plant — Plant Summary
- EIA Plant ID
- 50406
- Capacity
- 107.1 MW
- Primary Fuel
- BLQ
- Technology
- Wood/Wood Waste Biomass
- Status
- Operating
- Location
- Somerset, ME
- Operating Since
- 1976
- Generators
- 2
- Operator
- Sappi Fine Paper North America-Somerset
- Parent Company
- Sappi
- Annual Generation
- 552,121 MWh
- Capacity Factor
- 58.9%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Somerset Plant
OperatingBlack Liquor
Ranked #1 of 3 Black Liquor plants in ME#9 of 62 nationally
107.1 MW Black Liquor operating in Somerset, ME — ISO New England Inc.
EIAGEMWD
107.1 MW
Nameplate Capacity
2
Generators
units
Wood/Wood Waste Biomass
Technology
1976
Operating Since
Location
Coordinates
44.7035, -69.6477
County
Somerset, ME
Nearby Plants
- Bates College SkowheganSolar5 MW · 6.1 km
- Cenergy - Richards (CSG)Solar1 MW · 7.4 km
- Weston HydroHydro12 MW · 8.7 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Sappi Fine Paper North America-Somerset | Sappi Fine Paper North America Somerset | — |
| Owner(s) | Sappi Fine Paper North America-Somerset | Sappi | — |
| Status | Operating | operating | — |
Ownership Chain
About
The Somerset Plant is a 107.1 MW biomass-fueled power plant located in Somerset County, Maine. It began operating in 1976 and is owned by Sappi, a company based in South Africa. The plant is operated by Sappi Fine Paper North America-Somerset. The facility utilizes wood and wood waste biomass as its primary fuel source and consists of two generators.
The Somerset Plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In the state of Maine, it ranks as the largest of two biomass plants. Nationally, it ranks 10th out of 13 similar facilities. The plant's latest annual generation was 552,121 MWh, achieving a capacity factor of 58.9%.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Industrial
Sector
Industrial CHP
Generation
39.0K MWh
Latest Month
552.1K MWh
Annual Generation
58.9%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Sappi Hinckley Substation · 115 kV
Substation Distance
< 10 km
Operator
Central Maine Power Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
4156
Pricing Hub
.Z.MAINE
Node Source
EIA-860 direct report
News & Articles (8)Beta
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