The company operated the Humboldt Bay Power Plant , Unit 3 in Eureka , California . It is the oldest commercial nuclear plant in California and its maximum output was 65 MWe . The plant operated for 13 years , until 1976 when it was shut down for seismic retrofitting . New regulations enacted after the Three Mile Island accident , however , rendered the plant unprofitable and it was never restarted . Unit 3 is currently in decommissioning phase . Based on PG&E 's schedule of planned decommissioning activities , which incorporates various assumptions , including approval of its proposed new scope , decommissioning of the Unit 3 site is expected to conclude in 2019 . Pacific Gas & Electric planned to build the first commercially viable nuclear power plant in the United States at Bodega Bay , a fishing village fifty miles north of San Francisco . The proposal was controversial and conflict with local citizens began in 1958 . In 1963 , there was a large demonstration at the site of the proposed Bodega Bay Nuclear Power Plant . The conflict ended in 1964 , with the forced abandonment of plans for the power plant
Three Mile Island accident
Three Mile Island accident
Pacific Gas and Electric Company