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 2023, Maine had a total summer capacity of 5,252 MW through all of its power plants, and a net generation of 12,512 GWh. In 2024, the electrical energy generation mix was 30.4% natural gas, 27.5% hydroelectric, 20.6% wind, 11% biomass, 7.8% solar, 0.4% petroleum, 0.2% coal, and 2.1% other. Small-scale solar, which includes customer-owned photovoltaic panels, delivered an additional net 1,015 GWh of energy to the state's electrical grid in 2024. This was nearly equal to the 1,077 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. Maine had no operating utility-scale plants that used coal as a primary fuel in 2019.
Petroleum-fired
Maine's petroleum-fired plants were operated as peaker plants in 2019.| Name | Location | Coordinates | Capacity | Generation type | Year opened | Ref |
| Cape Gas Turbine | Cumberland County | 35.0 | Simple cycle | 1970 | ||
| Flos Inn Diesel | Aroostook County | 6.0 | Reciprocating engine | 1959 | ||
| Wyman Power Station | Cumberland County | 846 | Steam turbine | 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
In operation since 1906, original units retired.Hydroelectric
| Name | Location | Coordinates | Capacity | Number of turbines | Year opened | 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 | 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 Hydro Livermore/ Riley/ Jay | Androscoggin County Franklin 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 | Number of turbines | Year opened | Turbine Mfg 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 | 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 | 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 | Year opened | 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 | Kennebec County | 1.5 | 2017 | ||
| Sanford Airport Solar Project | York County | 50.0 | 2020/2021 |
0.6MW ground array + 0.6MW rooftop solar