Sempra is an energy services company. Its San Diego Gas & Electric Company segment provides electric services to 3.6 million users and natural gas to 3.3 million users. 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. Sempra was founded in 1998 and is headquartered in San Diego, CA.