The Vallecitos Nuclear Center (VNC) (MED/AEC Legacy Site), a 1,600-acre nuclear research facility and the site of a former electricity-generating nuclear power plant, is located in Sunol, California, about 40 miles east of San Francisco. The first commercially owned nuclear plant to supply power to the general public was operated at the site from 1957 until 1963. From 1965 through 1975, VNC was used to conduct research work for the Atomic Energy Commission’s (AEC) Nuclear Energy Program and the civilian nuclear power industry. For more information about the VNC, view the fact sheet.