CEMIG

CEMIG is present in 22 Brazilian states and in Chile. With around 50 power plants in operation, most of them hydroelectric, the company owns around 6,000 MW of generation capacity. Just over half of Cemig's stock is owned by the state of Minas Gerais.
The company is responsible for serving about 18 million people in 774 municipalities of Minas Gerais and for the management of the largest network of electricity distribution in South America, with more than 400 thousand km of lines.
The stock is traded on B3 where it is part of the Ibovespa index. It is also traded on the New York Stock Exchange. It's also part of The Global Dow and of the Latibex, an index for Latin American companies in Madrid Stock Exchange.
The company owns 43% of Taesa, a Brazilian Electric Company. Provided by Wikipedia