Maine
power plants.
Maine has 31 operating power plants in the catalog, 2,642 MW in all. The catalog also marks 4 plants as Retired, with 266 MW of capacity. Its operating fleet leans on natural gas, which accounts for 59.7% of operating capacity, with biomass second at 16.2%. The largest operating plant in the catalog is Westbrook Energy Center Power Plant (564 MW, recorded start year 2001).
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Maine electricity mix
Operating installed capacity by fuel. Each row gives megawatts and its share of the operating total.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Largest plants in Maine
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Newest plants in Maine
Operating plants with the most recent recorded start years. The catalog records years, not full commissioning dates.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Frequently asked questions
Where does Maine get its electricity?
Across the 31 operating plants in the catalog, capacity is led by natural gas at 59.7%, then biomass at 16.2%. These are installed-capacity shares, not live generation.
What is the largest power plant in Maine?
The largest operating plant in the catalog for Maine is Westbrook Energy Center Power Plant, a natural gas facility with 564 MW and a recorded start year of 2001.
How many power plants are in Maine?
The catalog tracks 31 operating power plants in Maine, with 2,642 MW in all. It also marks 4 plants as Retired, with 266 MW of capacity.