The Humboldt Bay Nuclear Power Plant is a 63 MWe boiling water reactor, owned by Pacific Gas and Electric Company that operated from August 1963 to July 1976 just south of Eureka, California. On Monday, January 23, 1961, Pacific Gas and Electric held a luncheon to invite the community to observe the start of the major construction of the nuclear unit. Concern about previously undiscovered seismic faults combined with more stringent requirements required after the Three Mile Island accident rendered the small plant unprofitable if restarted. It was shut down for refueling and seismic upgrades in July 1976, which dragged on due to changing requirements.