An RES-based electric vehicle charging station is able to provide a noble scope to effectively maximize the efficiency and storage capacity in a power system. This paper presents design and techno-economic analysis of such a station. The analysis has been performed with and without storage facilities using HOMER software. It is evident from the analysis that without storage provisions, the total cost of the charging station is reduced, but the system remains unreliable in providing power. However, with storage provisions, though the initial investment considerably increases, the system becomes more reliable and robust. In this analysis two options have been considered regarding grid connectivity. Firstly, during grid to vehicle mode, limited range of power from grid flows to charge batteries. Secondly, during vehicle to grid mode, surplus power generated from renewable sources can be sent to grid during off peak hours. Solar energy and wind energy have been taken as renewable sources for the proposed model. Suitable area where wind is available throughout the year has been considered. An analysis considering the charging of twelve electric vehicles per day has been proposed through the model by calculating total electricity production from renewable sources and grid purchase. In addition, sales and net present costs along with comparisons between with storage system and without storage system has been analyzed and presented.
