...Commercial strategy and hydrology risk. ISAGEN, S.A. E.S.P. has been adhering to a more conservative commercial strategy since the drought season that affected Colombia in 2016. On one side, as the company has been selling a lower amount of electricity through contracts in order to protect itself against poorer hydrological conditions, it also leaves ISAGEN more exposed to spot market prices fluctuations. However, we still believe that the majority of its cash flows will come from sales through longer-term contracts, so fluctuations in spot market prices shouldn't generate substantial volatility to its credit metrics. Delays in the expansion of hydro capacity in Colombia. Empresas Publicas de Medellin E.S.P.'s (EEPPMM) construction of the 2,400 megawatt (MW) capacity Ituango hydro plant has been delayed for several years, and the most recent expectation is that it won't start operating before December 2021. Given its relevant size for Colombia's electric system, further construction delays...