ENEL GENERACION COSTANERA S.A. Stock Buenos Aires S.E.

Enel Generacion Costanera SA, formerly Central Costanera SA, is an Argentina-based company engaged in the generation and distribution of electric power. The Company operates a thermal power plant in Buenos Aires with units of conventional steam cycle with an installed capacity of around 2,180 megawatts (MW) and a number of combined cycle turbines, which have an installed capacity of approximately 3,534 MW respectively. In addition, the Company, through its associates Companhia de Interconexao Energetica SA and Endesa Cemsa SA, is active in the distribution of electric energy to the Brazilian market. The Company control has been transferred from Enel Argentina SA to Proener SAU.