COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG LISTED COMPANY CNPJ 17.155.730/0001-64 MARKET ANNOUNCEMENT Environment license given for Brazil’s giant Santo Antônio Hydro Plant project Cemig, a listed company holding public service concessions, with securities traded on the stock exchanges of São Paulo, New York and Madrid hereby reports – in accordance with Article 12 of CVM Instruction 358 of 3 January 3, 2002 and its commitment to best corporate governance practices – that on August 13, 2008 the chairman of the Brazilian environmental authority IBAMA (Brazilian Institute for the Environment and Renewable Natural Resources) signed the environmental license for installation of the Santo Antônio Hydroelectric Plant, on the Madeira river in Brazil’s remote state of Rondônia. Obtaining of this authorization in record time is a fundamental step in meeting the May 2012 target date for startup of the plant. The permission has been given seven months ahead of the originally planned timetable. Belo Horizonte, Brazil, August 14, 2008. Av.Barbacena, 1200 - Santo Agostinho - CEP 30190-131 Belo Horizonte - MG - Brasil - Fax (0XX31)3506-5026 - Tel.: (0XX31)3506-2578