Cia Energetica DE Minas Gerais - Cemig is a Brazilian energy company engaged in the generation, transmission, distribution, and commercialization of electricity, as well as natural gas distribution. The company operates through six segments: Generation, Transmission, Trading, Distribution, Gas, and Investees. Its activities include power generation mainly from hydroelectric sources, operation and maintenance of transmission and distribution infrastructure, electricity sales to captive and free-market customers, and gas distribution in Minas Gerais. The company derives a majority of its revenue from the Distribution segment, which comprises the distribution and sale of electricity to captive customers, and the operation and maintenance of infrastructure and related services.