Light S.A., together with its subsidiaries, engages in the generation, transmission, distribution, and sale of electric power in Brazil. The company distributes electricity in the state of Rio de Janeiro. It also engages in the research, planning, building, operation, and exploration of generation and transmission systems; purchase, sale, import, and export of electric and thermal power, and gas and industrial utilities; provision of consulting services in the energy sector; lease of real estate and personal properties; acquisition and sale of goods related to the studies and projects; implementation, operation, and maintenance of construction works and facilities; and trading activities. In addition, it provides services to low voltage clients, including the assembly, renovation, and maintenance of facilities. The company primarily serves residential, commercial, and industrial customers. Light S.A. was founded in 1899 and is based in Rio de Janeiro, Brazil.