Economic Feasibility of Production Units for Self-Consumption with Storage Batteries to Charge Electric Vehicles: Case Study in the Residential Portuguese Sector

The transition to sustainable energy is vital for the responsible use and development of resources, including the integration of renewable energies in residential and industrial sectors and the promotion of electric mobility. These initiatives are essential pillars in achieving the energy and environmental goals defined by the European Union and Portugal. In this paper, a case study was carried out, applied to the residential Portuguese sector, about the economic feasibility of Production Units for Self-Consumption with storage batteries and the possibility of charging electric vehicles. Different scenarios were analyzed: individual self-consumption without storage batteries and individual self-consumption with storage batteries, including two distinct electric vehicles. According to the obtained results, there were significant reductions in energy imports from the electrical grid and, under certain conditions, the economic feasibility of the system was also achieved, which contribute to the sustainable use of resources.