2020 年 36 巻 2 号 p. 151-161
Renewable energy is expected as a way of the small-scale dispersed generation system. The urban area is located far from large power facilities while it has a large population and energy demand. In the urban area, the area size of space for the possibility of installing wind power plants or large photovoltaic power generation systems is smaller than that of the suburban area. In that kind of background, the rooftop type photovoltaic power generation system (rooftop type PV) is expected as one choice of renewable energy resources. In this research, the model for the estimation of the potential of the amount of installation of the rooftop type PV is clarified by utilized of several published spatial distribution data. Sixty sample districts are selected for analysis from the residential zoning districts in Nagoya city. At first, the number of PV installed rooftops are surveyed in all sample districts. Second, the correlation between the number of PVs per one building of each district and the spatial scale of buildings, the population, the amount of solar radiation, the change of land-use type, and the environmentally aware are analyzed. Finally, using the above indicators, the multiple regression model for the calculation of the amount of estimated value of rooftop type PV on each district is created. As a result of the multiple regression analysis using the stepwise method, the regression coefficient of the amount of solar radiation, the number of new construction buildings, landuse change of residential to industrial land-use is selected as useful indicators are selected.
