AES Argentina Generación S.A., a subsidiary of US power group AES Corp., is engaged in the generation and distribution of electric power. The company operates 3,528MW, which represents 10.5% of Argentina's total installed capacity. AES Argentina has a diversified generation portfolio of 10 generation facilities, comprised of 62% thermoelectric and 38% hydroelectric capacity. These are ThermoAndes, EL Tunal, Cabra Corral, Los Caracoles, Ullum, Sarmiento, San Nicolás, Paraná, Alicura, and Guillermo Brown. All of the thermoelectric capacity has the capability to burn alternative fuels. The company primarily sells its production to the wholesale electric market. In 2011, the company sold its two distributors Empresa Distribuidora La Plata S.A. (Edelap) and Empresa Distribuidora de Energía Sur S.A. (Edes). AES Argentina was founded in 1993 and is based in Buenos Aires. In 2015, a second 290MW generating unit at the Guillermo Brown thermoelectric plant in Bahía Blanca, Buenos Aires province, went online. The 580MW open-cycle plant is operated by AES Argentina and took approximately two years to build. AES and Argentina's planning ministry will launch a tender for the installation of a steam turbine in order to close the cycle and increase the plant's generating capacity to 860MW.