Abstract
A novel concept of an energy system “virtual grid” in which renewable electric power such as photovoltaic power generation (PV) is stored and transported efficiently by using electric vehicles (EV) has been proposed. Previous research of the virtual grid has shown that CO2 emissions can be reduced economically in an integrated model of the home, private EV and the workplace. In this paper, buses that travels between the station and the workplace are electrified, and the effect of an energy system integrated between private EV, electric buses (EB) and the workplace is studied and is expanded upon from previous research. As a result, by introducing this system, about 90% of the power consumption of EB can be replaced by PV power. In addition, in the energy system integrated with PV, EB, private EV, and the workplace, under the condition that the PV surplus generation rate is constant, the CO2 reduction effect increases as the integration becomes larger.
