The goal of this research is to obtain knowledge about an impact of the Great East Japan Earthquake on the wide area air temperature sensitivity of electric power consumption. To find a relevant air temperature, we propose a weighted mean air temperature, which obtained with daytime and nighttime population. As the result, we recognized as follows: Energy saving movement in society was clearly recognized after the earthquake (energy consumption reduced to 60% in the sensitivity). From the result in summer 2012, impact of human factor on air temperature sensitivities was recognized continuously.
