Future Estimation of Energy Consumption and Co2 Emissions for the Analysis of the Possibility Achieving 2050 Carbon Neutrality in the Japanese Household Sector

This study developed a model for estimating energy consumption and CO2 emissions up to 2050 in the household sector in Japan. The total national energy consumption of the BAU case would be 1,136 PJ, a 53.4 % reduction compared to 2013. The total national CO2 emissions would be 10.18 Mt-CO2, a 94.1 % reduction compared to 2013. In addition, energy consumption and CO2 emissions will not reach zero even if Japan achieves current policy targets, suggesting that further efforts will be needed to reduce CO2 emissions to zero.