“…Finally, the EPBP of the stand-alone system in Zakithnos is approximately equal to 23.5 years, a numerical value that exceeds the minimum service period of the installation, being however quite lower than the 30 years maximum, which is the sustainability criterion of the proposed PV-Bat systems. Besides, it is evident that by abandoning the zero-load rejection condition and allowing more realistic loss of load constraints [38,39], the size of the proposed stand-alone installations is significantly reduced, thus improving the energy sustainability of the proposed configuration.…”