List of power stations in Maine

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.^{[citation needed]}

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.^{[citation needed]}

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.^{[citation needed]}

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).^[7] Maine had no operating utility-scale plants that used coal as a primary fuel in 2019.^[1]

Natural gas-fired

Petroleum-fired

Maine's petroleum-fired plants were operated as peaker plants in 2019.

^A 16.2MW battery storage capacity added at Wyman Station in 2016.^[19]

Biomass and municipal waste

^A In operation since 1906, original units retired.

Hydroelectric

^A In operation since 1906, original units retired.
^B Retirement pending^[84]
See also: Natural Resources Council of Maine Hydro Facilities^[85]

Wind

Solar

^A 0.6MW ground array + 0.6MW rooftop solar

Battery storage

As of February 2026, Maine has 7 grid-connected battery storage sites.^[123]