Southern California Gas Co. has been delivering clean, safe and reliable natural gas to its customers for more than 140 years. It is the nation's largest natural gas distribution utility, providing safe and reliable energy to 20.9 million consumers through 5.8 million meters in more than 500 communities The company's service territory encompasses approximately 20,000 square miles in diverse terrain throughout central and Southern California, from Vislia to the Mexican border. The Gas Company is a regulated subsidiary fo Sempra Energy (NYSE:SRE. Sempra Energy, based in San Diego, is a Fortune 500 energy services holding company.