CenterPoint Energy, Inc. operates as a public utility holding company in the United States. The company’s Electric Transmission & Distribution segment offers electric transmission and distribution services to retail electric providers, municipalities, electric cooperatives, and other distribution companies. As of December 31, 2014, this segment owned 28,282 pole miles of overhead distribution lines and 3,719 circuit miles of overhead transmission lines; 22,435 circuit miles of underground distribution lines and 26 circuit miles of underground transmission lines; and 236 substations with a capacity of 57,477 megavolt amperes. Its Natural Gas Distribution segment sells regulated intrastate natural gas; provides natural gas transportation services for residential, commercial, industrial, and transportation customers; and offers unregulated services comprising residential appliance repair and maintenance services, as well as sells heating, ventilating and air conditioning equipment. This segment owned approximately 73,000 linear miles of natural gas distribution mains. The company’s Energy Services segment provides physical natural gas supplies primarily to commercial and industrial customers, and electric and gas utilities; natural gas management services; and physical delivery services, as well as procures and optimizes transportation and storage assets. It owns and operates approximately 200 miles of intrastate pipelines; and leases transportation capacity on various interstate and intrastate pipelines, and storage. Its Midstream Investments segment provides gathering, processing, compression, treating, dehydration, and natural gas liquids fractionation for natural gas producers. This segment had approximately 11,900 miles of gathering pipelines, 7,900 miles of interstate pipelines, and approximately 2,300 miles of intrastate pipelines. The company was founded in 1882 and is headquartered in Houston, Texas.