Power Plants in Rhode Island

Rhode Island's generating fleet holds 2,570 megawatts of nameplate capacity as of May 2026, ranking it 49th among the 51 ranked power-producing regions. The state operates 110 plants, all in service. Nameplate capacity is what the equipment could produce running flat out; this is not generation, which differs by fuel type because a megawatt of solar and a megawatt of natural gas produce very different amounts of electricity over a year.

Natural gas dominates the fleet at 77.3% of capacity across just 8 plants, with the Rhode Island State Energy Center in Providence leading at 596 megawatts. Manchester Street, also in Providence, supplies 515 megawatts from 6 units, followed by Ocean State Power II at 307 megawatts and Ocean State Power at 254 megawatts, both in Providence, and Tiverton Power Plant in Newport at 275 megawatts. Solar installations make up 17.3% of capacity split across 75 plants, while wind accounts for 3% from 19 plants. Hydro, battery storage, and other sources together represent less than 3% of the fleet.

The fleet spans from Central Power Plant, first online in August 1958, to WSD Coventry, which came online in December 2025. This represents a generating infrastructure ranging across nearly seven decades, with most capacity concentrated in natural gas plants built between 1990 and 2002.