CenterPoint Energy, Inc. is an American utility company based in Houston, Texas, that provides electric and natural gas utility to customers in several markets in the American states of Indiana, Ohio, Louisiana, Minnesota, Mississippi, and Texas. Part of the Fortune 500, the company was formerly known as Reliant Energy, NorAm Energy, Houston Industries, and HL&P. The company is headquartered in the CenterPoint Energy Tower at 1111 Louisiana Street in Downtown Houston. Wikipedia