Sempra Energy operates as an energy-services holding company in the United States and internationally. The company's San Diego Gas & Electric Company segment generates, transmits, and distributes electricity and supplies natural gas. It offers electric services to approximately 3.7 million population and natural gas services to approximately 3.4 million population that covers 4,100 square miles. Its Southern California Gas Company segment owns and operates a natural gas distribution, transmission, and storage system that supplies natural gas to a population of approximately 22 million covering an area of 24,000 square miles. The company's Sempra Texas Utilities segment is involved in the regulated transmission and distribution of electricity serving 3.7 million homes and businesses, and operation of 139,000 miles of transmission and distribution lines. Its transmission system includes 18,127 circuit miles of transmission lines, 336 transmission stations, and 806 distribution substations distribution system comprises 121,129 miles of overhead and underground lines and 63 miles of electric transmission lines. Its Sempra Mexico segment develops, owns, operates, or holds interests in natural gas, electric, liquefied natural gas (LNG), liquid petroleum gas (LPG), ethane, and liquid fuels infrastructure and purchases LNG, and purchases and sells natural gas. This segment operates natural-gas-fired, and wind and solar power generation facilities. Its assets/facilities consist of 1,850 miles of natural gas transmission pipelines, 15 compressor stations, and 139 miles of ethane pipelines and 2,729 miles of natural gas distribution pipelines. The company's Sempra LNG segment develops and builds natural gas liquefaction export facilities holds an interest in a facility for the export of LNG owns and operates natural gas pipelines and buys, sells, and transports natural gas. The company was founded in 1998 and is headquartered in San Diego, California.