Light SA is a holding company, which generates, transmits, distributes and commercializes electric power services. The company operates through the following segments: Generation, Distribution and Commercialization. The Generation segment generates electric power, which is based on the management of the hydraulic power of Paraíba do Sul and Ribeirão das Lajes rivers. It consists of five generating power plants and 2 pumping stations and it also composed of hydraulic structures, such as reservoirs, dams, canals, dike, spillway, tunnels, forced ducts and water intakes. The Distribution segment distributes electric power. The Commercialization segment commercializes electric energy. Light was founded on July 17, 1899 and is headquartered in Rio de Janeiro, Brazil.