Sempra Energy is a holding company. The Company's principal operating units are Sempra Utilities, which includes its San Diego Gas & Electric Company (SDG&E), Southern California Gas Company (SoCalGas) and Sempra South American Utilities segments, and Sempra Infrastructure, which includes its Sempra Mexico, Sempra Renewables and Sempra LNG & Midstream segments. As of December 31, 2016, SDG&E's service area covered 4,100 square miles. Sempra South American Utilities operates Chilquinta Energia, which serves customers in the region of Valparaiso in central Chile. As of December 31, 2016, SoCalGas had natural gas franchises with the 12 counties and the 223 cities in its service territory. Sempra LNG & Midstream owns land in Simpson County, Mississippi Hub. Sempra LNG & Midstream owns land in Port Arthur, Texas. Sempra Renewables has operations, investments or development projects in the various United States markets.