List of power stations in Maine

This is a list of electricity-generating power stations in the U.S. state of Maine, sorted by type and name. In 2024, Maine had a total summer capacity of 5.6 GW through all of its power plants, and a net generation of 14,655 GWh. In 2025, the state's electrical energy generation mix was 37.5% natural gas, 19.4% wind, 17.8% hydroelectric, 11.7% biomass, 10.4% solar, 1.1% petroleum, 0.2% coal, and 1.8% other. Small-scale solar, which includes customer-owned photovoltaic panels, delivered an additional net 1,344 GWh of energy to the state's electrical grid in 2025. This was about 15% less than the 1,547 GWh generated by Maine's utility-scale photovoltaic plants.

During 2021, renewable sources generated 74% of all electrical energy from Maine, making it one of the top-five U.S. states. Maine's share of wind generation is the largest among New England states, and its share of biomass generation from the wood industry and municipal waste sources is the largest in the United States. Maine's electricity generation has not met the in-state demand in recent years, and about one-quarter of its electricity consumption was imported from Canada.

Nuclear power stations The Maine Yankee Nuclear Power Plant generated 860 MW of base load electricity during the years 1972 to 1996. Decommissioning was completed in 2005. Maine had no utility-scale plants that used fissile material as a fuel in 2019.

Fossil-fuel power stations Data from the U.S. Energy Information Administration serves as a general reference.

Coal-fired The Mason Station in Wiscasset was a coal-fired plant built in 1941-42, with the capability of producing 153,500 kilowatts giving it the status, at that time, of Maine’s second largest electric generating plant, W.D. Wyman Station in Yarmouth was the largest with a capacity of 225,000 kilowatts.

Central Maine Power and Wiscasset were good neighbors for many years. The Mason Station was many things to the community. It brought economic growth to the town and livelihood to its employees. It produced electricity at a time when it was needed most, and, being the largest taxpayer in town, it helped keep the mil rate low for other taxpayers.

For several years in the 1970s, Maine Salmon Farms raised Pacific Coho salmon in the warm water outflow from Mason steam station in Wiscasset. The warm water prevented icing and allowed the young fish to grow even in the cold winter months.

The Rumford Cogeneration and S D Warren Plants previously burned coal as primary fuel, and continued to burn it as secondary fuel in 2019 (see Biomass). Maine had no operating utility-scale plants that used coal as a primary fuel in 2019.

Natural gas-fired Name Location Coordinates Capacity(MW) Generationtype Yearopened Refs Androscoggin Energy Center Franklin County 163.5 Simple cycle (x3) 1999/2000 Bucksport Generation Plant Hancock County 186.8 Simple cycle 2001 Maine Independence Station Penobscot County 550.2 2x1 Combined cycle 2000 Mead Rumford Cogen Oxford County 12.5 Steam turbine 1954 Rumford Power Plant Oxford County 262.9 1x1 combined cycle 2000 Westbrook Energy Center Cumberland County 563.9 2x1 combined cycle 2001

Petroleum-fired Maine's petroleum-fired plants were operated as peaker plants in 2019. Name Location Coordinates Capacity(MW) Generationtype Yearopened Ref Cape Gas Turbine Cumberland County 35.0 Simple cycle (x2) 1970 Flos Inn Diesel Aroostook County 6.0 Reciprocating engine (x3) 1959 Wyman Power Station Cumberland County 846 Steam turbine (x4) 1957-1978 16.2MW battery storage capacity added at Wyman Station in 2016.

Renewable power stations Data from the U.S. Energy Information Administration serves as a general reference.

Biomass and municipal waste Name Location Coordinates Capacity(MW) Fuel Generationtype Yearopened Refs Androscoggin Mill Franklin County 80 Wood/wood waste Steam turbine (x3) 1964-1974 Athens Energy Plant Somerset County 8.5 Wood/wood waste Steam turbine 2016 Crossroads Landfill Gas Somerset County 3.2 Landfill gas Reciprocating engine (x2) 2009 Jonesboro Energy Center (Indeck) Washington County 27.5 Wood/wood waste Steam turbine 1987 Livermore Falls Plant Penobscot County 39.6 Wood/wood waste Steam turbine 1992 MMWAC Resource Recovery Facility Androscoggin County 5.0 Municipal solid waste (biogenic & non-biogenic),natural gas Steam turbine 1992 Old Town Waste Plant Penobscot County 28.5 Wood/wood waste Steam turbine (x2) 1965/1987 Penobscot Energy Recovery Facility Penobscot County 25.3 Municipal solid waste (biogenic & non-biogenic),fuel oil Steam turbine 1987 Pine Tree Landfill Gas Penobscot County 3.3 Landfill gas Reciprocating engine (x3) 2008 Regional Waste Systems Facility Cumberland County 13.3 Municipal solid waste(biogenic & non-biogenic),natural gas Steam turbine 1988 Rumford Cogeneration Plant Oxford County 102.6 Wood waste,coal,tire-derived fuel Steam turbine 1990 S. D. Warren Westbrook Plant Cumberland County 62.5 Wood waste,coal Steam turbine (x2) 1982/1985 Somerset Waste Plant Somerset County 107.1 Wood waste,natural gas,tire-derived fuel Steam turbine (x2) 1976/1990 Stratton Plant Franklin County 45.7 Wood/wood waste Steam turbine 1989 Twin Rivers Paper Plant Aroostook County 22.0 Wood/industrial waste Steam turbine 1987 West Enfield Energy Center (Indeck) Penobscot County 27.5 Wood/wood waste Steam turbine 1987 Woodland Pulp Waste Plant Washington County 49.8 Wood/wood waste Steam turbine (x2) 1966/1970 In operation since 1906, original units retired.

Hydroelectric

Name Location Coordinates Capacity(MW) Number ofturbines Yearopened Refs Anson-Abenaki Hydros Plant Somerset County 29.0 13 1950-1994 Aziscohos Hydro Project Oxford County 6.7 1 1988 Bonny Eagle Hydropower Plant York County 7.2 6 1910 Brunswick Hydro Plant Cumberland County 19.6 3 1982/1983 Caribou Generation Station Aroostook County 0.8 2 1926 Charles E. Monty Hydro Plant Androscoggin County 28.4 2 1990 Deer Rips Androscoggin County 6.5 7 1903-1924 Ellsworth Hydro Station Hancock County 8.9 4 1924-1938 Great Lakes Hydro America(West Branch Penobscot Hydro) Penobscot County 135.7 31 1917-1988 Gulf Island Hydro Plant Androscoggin County 19.2 3 1926 Harris Hydro Plant Somerset County 76.4 4 1954-1955 Hiram Hydropower Plant Cumberland County 10.5 2 1917/1985 Hydro Kennebec Project Kennebec County 15.0 2 1989 International Paper HydroLivermore/ Riley/ Jay Androscoggin CountyFranklin County 18.9 21 1910-1981 Lockwood Hydro Facility Kennebec County 7.2 7 1985/1988 Milford Hydro Station Penobscot County 7.8 6 1941-1956/2011 Otis Hydropower Plant Franklin County 10.2 2 1985 Pejepscot Hydroelectric Project Sagadahoc County 13.5 4 1987 Rumford Falls Hydro Facility Oxford County 39.2 6 1918-1954 S D Warren Hydropower Plant Cumberland County 7.2 14 1903/1913/1940 Shawmut Hydropower Plant Somerset County 9.2 8 1913/192/1982 Skelton Hydropower Plant York County 16.8 2 1948 West Enfield Hydro Plant Penobscot County 13.0 2 1988 Weston Hydro Plant Somerset County 12.0 4 1921/1923 Williams Hydro Plant Somerset County 13.0 2 1939/1950 Woodland Pulp Hydro Plant Washington County 18.5 10 1906/1912/1929/1970 Worumbo Hydro Station Androscoggin County 19.4 2 1989 Wyman Hydro Plant Somerset County 72.0 3 1930/1931/1940 In operation since 1906, original units retired. Retirement pending See also: Natural Resources Council of Maine Hydro Facilities

Wind

Name Location Coordinates Capacity(MW) Number ofturbines Year opened TurbineMfg spec Refs Beaver Ridge Wind Project Waldo County 4.5 3 2008 GE 1.5MW Bingham Wind Project Piscataquis County 186 56 2016 Vestas 3.3MW Bull Hill Wind Project Hancock County 34.2 19 2012 Vestas 1.8MW Canton Mountain Wind Project Oxford County 22.8 8 2017 GE 2.85MW Fox Islands Wind Project Knox County 4.5 3 2009 GE 1.5MW Hancock Wind Project Hancock County 51 17 2016 Vestas 3.3MW Kibby Wind Facility (I&II) Franklin County 132 44 2009/2010 Vestas 3.0MW Mars Hill Wind Farm Aroostook County 42 28 2006 GE 1.5MW Oakfield Wind Project Aroostook County 148 48 2015 Vestas 3.0MW Passadumkeag Wind Park Penobscot County 42.9 13 2016 Vestas 3.3MW Pisgah Mountain Wind Penobscot County 9.1 5 2016 Vestas 1.8MW Record Hill Wind Farm Oxford County 50.6 22 2011 Siemens 2.3MW Rollins Wind Project Penobscot County 60 40 2011 GE 1.5MW Saddleback Ridge Wind Project (I&II) Franklin County 34.2 12 2014/2015 GE 2.85MW Spruce Mountain Wind Project Oxford County 20 10 2011 Gamesa 2.0MW Stetson Wind Farm I & II Washington County 82.5 55 2009/2010 GE 1.5MW

Solar

Name Location Coordinates Capacity(MWAC) Yearopened Refs Bowdoin College Solar Cumberland County 1.2 2014 Farmington Solar Franklin County 76.5 2021 IGS Madison Electric Works Somerset County 4.1 2017 NRG Solar Mule(Colby College Solar Array) Kennebec County 1.5 2017 Sanford Airport Solar Project York County 50.0 2020/2021 0.6MW ground array + 0.6MW rooftop solar

Storage power stations Data from the U.S. Energy Information Administration serves as a general reference.

Battery storage As of February 2026, Maine has 7 grid-connected battery storage sites.

Name Location Coordinates Dischargecapacity(MW) Yearopened Refs Cross Town Energy Storage Cumberland County 175.0 2025 William F. Wyman Hybrid Cumberland County 16.2 2016

See also

List of power stations in the United States

References