Sempra Energy is an American natural gas utilities holding company based in San Diego, California. It divides its interests into two broad categories: Sempra Utilities, including Pacific Enterprises/Southern California Gas Company and San Diego Gas & Electric; and Sempra Global, a holding company for businesses not subject to California utilities regulation, chiefly Sempra Commodities, Sempra Generation, Sempra Pipelines & Storage, and Sempra LNG. For 2011, Sempra Energy reported $10 billion in revenue and nearly 17,500 employees, serving more than 31 million customers worldwide. It is the largest natural gas utility in the United States in terms of coverage area and population served, and is a major force in international natural gas markets