CO_2 emissions caused by household energy consumption in Japan have increased by 20% compared with 1990 in 2000. Therefore, it is the key policy to observe the Kyoto Protocols to promote globalwarming measures in the household section. This research describes the outline of the simulation software that estimates CO_2 emissions from household section from 1990 to 2020 according to administrative divisions and the result of reviews of the BAU case and the thorough measures case, etc.
