Feasibility analysis of a hybrid renewable energy system with vehicle-to-home operations for a house in off-grid and grid-connected applications

This study investigates the feasibility of a hybrid renewable energy system (HRES) with energy storage system (ESS) for a house, where the vehicle-to-home (V2H) option is considered as a backup/support system. HOMER is used for the optimal sizing of the HRES integrating photovoltaic (PV) panels, wind turbine (WT) and ESS, and V2H is properly managed to improve the energy management. Three scenarios are studied considering a 10 kW WT and a 20 kW inverter. In the first one, the EV is only considered as a load. The second one assesses how the V2H influences the HRES for moving loads to off-peak hours, and smoothing the consumption curve. The last one studies the self-consumption with sale of excess energy to the grid. The results show that the V2H does not influence the sizing of the HRES (only a reduction of a battery module), because there is only an energy transfer. In the third scenario, the possibility of selling surplus energy to the grid (at 0.05 euro/kWh), allows not only the house self-consumption but a great cost reduction compared to the first scenario (reduction of 25.1% in the Total Net Present Cost (NPC) and 49.5% in the Levelized Cost of Energy (LCOE)).

Automated summary

This study investigates the feasibility of a hybrid renewable energy system with energy storage system for a house, and considers the vehicle-to-home option as a backup/support system. The results show that the vehicle-to-home system does not influence the sizing of the hybrid renewable energy system, but can reduce the overall cost and optimize energy management.