Ren Redes Energeticas Nacionais SGPS SA (REN) is a Portugal-based holding company involved in the energy sector. The Companyâ€™s activities are divided into three business segments. The Electricity segment is primarily engaged in the transmission of high-voltage electricity and overall technical management of the National Electricity System. The Gas segment transports natural gas at high-pressure and underground storage natural gas, as well as offers technical management of the National Natural Gas System. The Telecommunication segment, which operates through Rentelecom, includes a range of services, such as infrastructure, managed services, consultancy, operation of telecommunication infrastructure and rental of fiber optic cables.