PG&E Corporation sells and delivers electricity and natural gas to customers in northern and central California, using various sources of energy including nuclear, hydroelectric, and photovoltaic sources. The company operates a vast network of transmission and distribution lines, substations, and storage facilities, providing services to residential, commercial, industrial, agricultural, and natural gas-fired electric generation facilities. PG&E Corporation was founded in 1905 and has its headquarters in San Francisco, California.