Abstract
This study aims to evaluate effect on CO2 emissions of low-carbon-technology. We have developed a model to estimate CO2 emissions of residencial sector, and organized a CO2 emission database by each detailed attribute which contains family structure, house type, residensial area. We attributes of the place this model treats three area (inner, suburbs, outer) in the Nagoya metropolitan area, and indicates effect of introduction of low-carbon-technology. The results indicate that 1) reduction of CO2 emission by photovoltaics exceeds increment of that by transport activity, 2) advantage of area-wide energy use is larger in neighbor that its landuse and household composition are diverse.