The sustainability of electrical distribution networks is essential for ensuring reliable supply and minimizing environmental impact. This study focuses on analyzing the impact of Distributed Energy Resources with photovoltaic selfconsumption systems on a real electrical distribution network, aiming to identify the benefits and challenges these systems present. The methodology employed includes collecting energy consumption data, selecting candidates for the implementation of photovoltaic systems, and modeling and simulating load flows using CYMDIST software. Data collection was carried out in an electric utility company in Ecuador, identifying users with the highest probability of adopting these systems. Subsequently, the photovoltaic systems were modeled in the electrical network, and the technical impacts were evaluated. The results show that the integration of photovoltaic systems alleviates the load on the distribution network, decreases energy losses, and facilitates a more flexible and adaptive management of energy demand. Finally, it is concluded that photovoltaic systems are expected to be a strong base for the transition towards a more sustainable and resilient electricity system
