Abstract
Energy usage in Japanese households sector is increasing, and it is becoming important to analyze household demand in considering the energy systems for Japan. We analyzed the electricity consumption in households through micro data obtained from the National Survey of Family Income and Expenditure conducted by the Management and Coordination Agency of Japan. The dependence of electricity con-sumption on the major factors: ie annual family income, ages of family members and superficies of residence, is evaluated by regression analysis. Electricity consumption is confirmed to increase as household income and superficies of residence increase. It is also shown that the ages of family members have considerable influence on the electrici-ty consumption.