Pampa EnergÃa S.A., an integrated electricity company, through its subsidiaries, engages in the generation, transmission, and distribution of electricity in Argentina. The company generates electricity through combined cycle gas-fired generating units, thermal generation plants, open-cycle gas turbines, and hydroelectric power generation systems, as well as through a wind farm. As of December 31, 2017, it had an electricity generation installed capacity of approximately 3,756 megawatts; 3 million electricity distribution customers in the northern region of the City of Buenos Aires and northwest of the greater Buenos Aires area; and 20,718 kilometers of high voltage transmission lines. The company is also involved in the exploration and production, and refining and distribution of oil and gas in Argentina, Venezuela, and Ecuador. In addition, it offers petrochemicals, such as intermediate gasoline products, aromatic solvents, hexane and other hydrogenated paraffinic solvents, and propellants for the cosmetic industry; and monomer styrene, and rubber and polymer products from natural gas, virgin naphtha, propane, and other supplies. As of December 31, 2017, the company had combined crude oil and natural gas proved reserves of approximately 167.1 million barrels of oil equivalent; one fully owned refinery with an installed capacity of approximately 30.2 thousand barrels per day; two storage plants with a capacity of approximately 1.2 million barrels; one lubricant plant; and three fully-owned petrochemical plants. It also operated a network of 250 gas stations. The company was formerly known as Pampa Holding S.A. and changed its name to Pampa EnergÃa S.A. in September 2008. Pampa EnergÃa S.A. was founded in 1945 and is headquartered in Buenos Aires, Argentina.