Power Plants in Oregon

Oregon's generating fleet holds 19.2 GW of nameplate capacity, ranking 28th of the 50 states and DC. The equipment listed could produce this much running flat out; actual generation differs because a megawatt of solar and a megawatt of hydropower produce very different amounts of electricity over a year. The state operates 296 plants in service out of 303 tracked, with most capacity concentrated in a few large facilities.

Hydro leads the fleet at 43.5% of capacity, split across 63 plants. Natural gas and wind follow at 22.6% and 22.2% respectively, with 11 and 50 plants. Solar holds 7.4% across 151 installations, battery storage 2.6% with 4 plants, and other fuels the remaining 1.8%. The four largest plants are all hydroelectric: John Day at 2,160 MW, The Dalles at 1,820 MW, Bonneville at 1,162 MW, and McNary at 991 MW. The largest natural gas plant is Hermiston Power Partnership at 689 MW. The fleet's oldest plant, River Mill, came online in November 1911. The newest, Lincoln Solar LLC (OR), began operating in July 2026.