東日本大震災後の住宅エネルギー需要の変化と地域性

抄録

The largest earthquake ever recorded in Japan struck on March 11, 2011 and measured 9.0 on the Richter scale. Furthermore, multiple nuclear power facilities were damaged by the earthquake. As a result, many people have been worried about power shortages during the summer and winter. The Japanese government and power companies appealed to people to conserve electricity and cut power use during peak hours. The Japanese people complied by diligently trying to conserve electricity. As a result, massive black outs were avoided in Japan. High temperatures were recorded in the summer of 2010. On the other hand, normal temperatures were recorded during the summer 2011. So, a scientific assessment of the energy demand is needed in considerations of the climate and other conditions. We are endeavoring to determine the appreciable post-quake amount of energy cuts. Final household energy demand models were generated by regions, energy types and seasons from data gathered from 2000 to 2010. The models number is 1504. This study revealed that the total annual energy demand dropped by only 1.2%. On the other hand, the annual electricity demand dropped by 6.2%. After the earthquake the electricity demand dropped by 9% in the summer, and by 0.6% in the winter but the demand for heating oil increased though out the year. Therefore, we consider that the heating oil increase was the cause for the majority of the drop in the demand of electricity. We will continue our search into the household energy demand area by area.