Study on Estimation of Hourly Electricity Consumption in Residential Sector in 2011 Summer

Abstract

Under the influence of an East Japan great earthquake, power saving was broadly carried out in the summer of 2011 not only in industrial and commercial sector but in residential sector. However, electricity consumption in the residential sector after power-saving action was not sufficiently figured out. In this study, based on the data from instruments for measuring electricity consumption installed in each participant household in 2011 summer, an estimation model of hourly electricity consumption for households was developed. The model could explain the actual monthly total of electricity consumption on July and August released by Tokyo electric power company (TEPCO) with an accuracy of 10%. The model indicated that the electricity consumption on the time observed maximum electricity consumption in 2011 summer was around 1000 million kW in residential sector, which value was much lower than the value around 1700 million kW released by TEPCO.