Anti-nuclear groups campaigned to stop construction of several proposed plants in the seventies , especially those located on the coast and near fault lines . These proposals included the San Joaquin Nuclear Project , overwhelmingly rejected by Kern County voters in March 1978 by a 70 – 30 % margin . A few months later , the proposed Sundesert Nuclear Power Plant was refused a permit by the California Energy Commission , who , a year before the Three Mile Island accident , refused to allow the San Diego Gas & Electric Company to begin construction of the Sundesert units in the " absence of federally demonstrated and approved technology for permanent disposal of radioactive wastes "
Three Mile Island accident
Three Mile Island accident
Anti-nuclear movement in California