Optimum operation and capacity for off-grid smart house

The introduction amount of renewable energy has increased, but control of power system is getting harder. As a solution of this problem, the use of an off-grid smart house that is not connected to the electric power system. The off-grid smart house can freely introduce renewable energy generation equipments. Also, it can operate without emission of carbon dioxide. In recent years, attention has been focused on electric vehicles (EVs). The EVs do not emit carbon dioxide during driving. Moreover, carbon dioxide reduction effect is enhanced by charging EVs using renewable energy generation. In addition, EVs become a way of carrying electricity, and it is possible to supply electricity to the off-grid smart house. EVs can compensate for the electricity and support operation of the off-grid smart house. This paper discusses the introduced capacity of equipments in the off-grid smart house having EV by performing optimization simulation. Moreover, it is possible to operate highly practical by classifying electric appliances load. The simulation results are compared with existing electricity fees, and the validity of the off-grid smart house has been confirmed.