Peru had 6.0 gigawatts (GW) of installed generating capacity in 2003. In that same year, the country generated 22.7 billion kilowatthours (Bkwh) of electric power while consuming 21.1 Bkwh. Even though installed capacity is evenly divided between hydroelectricity and conventional thermal electricity, 82 percent of Perus total electricity supply is generated by hydroelectric facilities, with thermal plants providing supply only during peak usage, or when natural conditions dampen hydroelectric output. The largest hydroelectric facility in the country is the Mantaro Complex in southern Peru, operated by state-owned Electroperu. Two hydroelectric plants at the complex generate over one-third of Perus total electricity supply from 900 megawatts (MW) of installed capacity. In February 2006, Egecen S.A. completed construction of the 130-MW, YuncÁn hydroelectric plant, located northeast of Lima. The Peruvian government awarded operation rights of the plant to EnerSur, a subsidiary of Brussels-based Suez Energy International. With the start of Natural Gas production from the Camisea project, the Peruvian government has encouraged greater investment in gas-fired power plants as a way to reduce reliance upon hydroelectricity. In July 2006, BPZ Energy plans to bring online its 140-MW, gas-fired power plant in Caleta Cruz. Panamanian-owned Empresa de Generacion Electrica de Chilca (Egechilcha), plans to build a 520-MW, combined cycle power plant south of Lima. The plant will use natural gas supplied from Camisea. In September 2004, Etevensa, the Peruvian subsidiary of Spain-based Endesa, began a construction upgrade of a combined cycle, gas-fired turbine (CCGFT) at its existing Ventanilla plant, the largest thermal power plant in Peru. The upgrade project increased the capacity of the facility to 380 MW. Many industrial users and independent power producers have also begun transitioning to natural gas.