Optimization of a Microgrid Integrated with Renewable Energies using PSO Navid Salehi, Herminio Martínez-García, Guillermo Velasco-Quesada and Encarna García-Vílchez E3S Web Conf., 239 (2021) 00011 Published online: 10 February 2021 DOI: 10.1051/e3sconf/202123900011