...REN-Redes Energeticas Nacionais SGPS S.A. (REN) is the monopoly gas and electricity transmission operator and the leading gas distribution operator in Portugal. REN's assets are regulated under long-term monopoly contracts with the Portuguese government until 2057 for electricity and 2046 for gas. REN is the second-largest gas distribution operator in Portugal after Galp Gas Natural Distribuitao, with a license expiring in December 2047. Well-established and supportive domestic regulatory framework, with some cash volatility stemming from the annual update of the RoR. The regulatory framework for electricity transmission in Portugal is now in its eighth three-year period, having started in January 2018 and ending in December 2020, with a RoR of 5.0% as of June 30, 2019. The regulatory framework for gas operations in Portugal is in its fourth period, with the fifth period starting in January 2020. Regulatory periods from 2019 last four years, whereas previously they were three years. As...