Companhia Energética de Minas Gerais (CEMIG) is a Brazilian electric utility operating in the power generation, transmission, and distribution industry. The company provides electricity and energy-related services to residential, commercial, and industrial customers across Brazil.
Its core operations include:
• Electricity generation from hydroelectric, wind, and solar sources.
• Operation of power transmission infrastructure.
• Distribution of electricity to millions of consumers.
• Development of integrated energy solutions and industry partnerships.
CEMIG operates a diversified electricity portfolio with a strong presence in hydroelectric generation, complemented by growing investments in renewable energy projects such as wind and solar power. The company manages power plants, transmission lines, and distribution networks that support large-scale electricity supply.
While its primary operations are concentrated in the state of Minas Gerais, CEMIG also participates in projects and concessions across other Brazilian regions through subsidiaries and joint ventures.
Company performance is influenced by electricity demand in Brazil, hydrological conditions affecting hydroelectric output, regulatory policies in the Brazilian power sector, infrastructure investment cycles, and energy market prices.
Companhia Energética de Minas Gerais shares trade on the New York Stock Exchange (NYSE) under the ticker CIG.
History and Development
CEMIG was founded in 1952 in Belo Horizonte, Minas Gerais, by the state government to support the rapid industrialization and urbanization of the region through the expansion of electricity infrastructure.
During its early decades, the company focused on building hydroelectric plants and expanding distribution networks across Minas Gerais, helping to integrate electricity supply throughout the state.
In the 1990s, CEMIG underwent a period of modernization and expansion aligned with broader reforms in Brazil’s electricity sector.
In 1997, the company completed its initial public offering (IPO) on the New York Stock Exchange, increasing its access to capital and supporting investments in generation capacity, transmission infrastructure, and renewable energy projects.