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Massachusetts Power Plants
Utility-scale generators of 1 megawatt or more in Massachusetts, as of August 2026 (EIA-860M).
- Operating capacity
- 14.0 GW
- Largest plant
- Canal
- 1.5 GW
- Planned through 2028
- 727 MW
- Generation, 2023
- 19.7 TWh
Capacity by fuel
Operating nameplate capacity
- Natural gas6.5 GW 46.7%
- Petroleum1.9 GW 13.4%
- Pumped storage hydro1.8 GW 13.1%
- Solar1.5 GW 10.7%
- Wind900 MW 6.4%
- Battery storage742 MW 5.3%
- Biomass346 MW 2.5%
- Hydroelectric273 MW 1.9%
Electricity generated, 2023
Net generation by fuel from EPA eGRID. CO2 output rate 822 lb/MWh
- Natural gas14.8 TWh 75.1%
- Solar2.0 TWh 10.1%
- Other928 GWh 4.7%
- Biomass914 GWh 4.6%
- Hydroelectric786 GWh 4.0%
- Wind175 GWh 0.9%
- Petroleum97 GWh 0.5%
Largest power plants
Top 150 by operating capacity. See counties below for every plant
Swipe the table sideways to see more columns.
Power plants by county
Operating plants located in each county
Capacity is the nameplate rating of generators that are operating or on standby. Solar capacity is in alternating current (AC). Batteries are counted by power (MW), not by stored energy (MWh).
Frequently asked questions
- How much power plant capacity does Massachusetts have?
- Massachusetts has 14.0 GW of operating utility-scale capacity as of August 2026.
- What is the largest power plant in Massachusetts?
- Canal is the largest at 1.5 GW of petroleum capacity.
- Where does Massachusetts get its electricity?
- Power plants in Massachusetts generated 19.7 TWh in 2023. The mix is shown above. Power also flows between states, so what plants in a state generate is not the same as what its customers use.
Source: U.S. Energy Information Administration, Form EIA-860M; U.S. EPA eGRID · Data for August 2026