In order to reduce CO2 emissions and solve the issues of Electric Vehicle, AI-EV (Air-Conditioner Integrated Electric Vehicle) has been developed. In the AI-EV, power source for operating an air-conditioner is combined with a generator, and both of them are driven by a small engine. In this paper, the authors have designed AI-EV and evaluated the effects that applied AI-EV to an energy community integrated with solar power, water heater and Electric vehicles. As the results, it was clarified that the leveling ability of the power system fluctuations, CO2 emissions and economic efficiency are superior to those of the conventional systems.