Optimum wind- and photovoltaic-based stand-alone systems on the basis of life cycle energy analysis

► Grown interest is lately noted on the LC energy needs of RES power technologies. ► The LC energy performance of wind- and PV-based stand-alone systems is examined. ► Optimum RES-based stand-alone systems are designated in terms of LC energy content. ► The energy payback period is estimated and the effect of RES potential is examined. ► Optimum solutions are also compared with both diesel and RES grid-connected systems.