Based in Brazil's southeastern city of Belo Horizonte, Companhia Energética de Minas Gerais S.A. (Cemig) is a holding company controlled by the government of Minas Gerais state. Cemig operates in the areas of electric power generation, transmission, distribution and trading, as well as in energy solutions (through its subsidiary Efficientia S.A.) and distribution of natural gas (through its subsidiary Companhia de Gás de Minas Gerais S.A.). It has assets throughout Brazil, including in the federal district and 22 states. The business group, one of Brazil's largest, leads a conglomerate of 231 companies, 19 consortiums and two equity investment funds. It owns and operates, in conjunction with its generator Cemig Geração e Transmissão S.A, 84 hydropower, thermo and wind power plants with total installed capacity of 7,800MW. Cemig Distribuição S.A, another subsidiary, serves 4,215 consumer units and continued expanding its distribution network in 2015 with the addition of 51.4km of gas pipelines. In 2015, Cemig won a concession to continue operating for the next 30 years the 13 plants for which it previously held the initial concessions, including the Três Marias, Salto Grande, Itutinga and Camargos plants, as well as five new plants that were not previously operated by the company.