Companhia Energetica de Minas Gerais is a Brazilian power company that generates, transmits and distributes electricity. As one of the largest electric companies in Brazil, the company operates in most Brazilian states and Chile. The company has several subsidiaries and operates primarily through its generation, transmission, distribution and gas segments. Most of the company's revenue is derived from selling electricity to consumers. The company generates energy primarily through hydroelectric resources and, secondarily, through thermal and wind resources.