Cemig is one of the most solid and important groups in the electric energy segment in Brazil, as it owns or has stakes in more than 173 companies and 15 consortia. An open capital company controlled by the Government of the State of Minas Gerais and has 127,000 shareholders in 44 countries. Its shares are traded on the São Paulo, New York and Madrid stock exchanges.

The Company today is a benchmark in the global economy, recognized for its sustainable practices. It has been part of the Dow Jones Sustainability Index World (DJSI World) for 19 consecutive years.

The Cemig Group is also recognized for its size and technical competence and is believed to be the largest integrated company in the electric energy sector in Brazil. In Minas Gerais, it services 96% of the concession area and has over 12 million consumers in 805 municipalities. It is also the largest supplier of energy to free clients in Brazil, with a 25% market share, and is one of the largest generation groups, responsible for the operation of 83 power plants with an installed capacity of 5.5 gigawatts.

Cemig has operations in 22 Brazilian states, in addition to the Distrito Federal. The company has expanded its stake in Light, assuming control of this energy distribution company which serves the city of Rio de Janeiro and other cities in the state of the same name, investments in the natural gas segment (Gasmig), renewable energy (Renova) and energy efficiency (Efficientia).