Abstract
Under the influence of environmental problems and the aftermath of the Fukushima nuclear power plant disaster, self-sufficiency of electric power achieved through decentralization of generation sources using smart grids has become increasingly important. However, while techniques are developing, the degree of self-sufficiency of electric power expected for each city using such technology has not been grasped fully. Therefore, assuming that smart grids are introduced to residential use, this study was undertaken to calculate the rate of self-sufficiency in municipalities considering the traffic behavior of inhabitants. Moreover, we analyzed the relation to city characteristics and the effects of implementing measures. Results show the following: 1) the self-sufficiency rate has about quadruple the difference at the maximum among municipalities; 2) cities with higher self-sufficiency rates have characteristics such as bedroom towns in the suburbs; 3) achievement of increased rates of self-sufficiency differs greatly among measures and municipalities.
