BP's major subsidiary in the United States is BP America, Inc. (formerly: Standard Oil Company (Ohio) and Sohio) based in Houston, Texas.[177] BP Exploration & Production Inc., a 1996 established Houston-based subsidiary, is dealing with oil exploration and production.[178] BP Corporation North America, Inc., provides petroleum refining services as also transportation fuel, heat and light energy.[179] BP Products North America, Inc., a 1954 established Houston-based subsidiary, is engaged in the exploration, development, production, refining, and marketing of oil and natural gas.[180] BP America Production Company, a New Mexico-based subsidiary, engages in oil and gas exploration and development.[181] BP Energy Company, a Houston-based subsidiary, is a provider of natural gas, power, and risk management services to the industrial and utility sectors and a retail electric provider in Texas.[182]