Improvement of consumer satisfaction level by energy storage system in smart houses

Recently, due to the stop of the nuclear power plant operations, the shortage of electric power and the increase of electricity prices have become big problems in Japan. The technologies of smart house have attracted great attention to reduce power consumption. Smart houses can reduce the power consumption and electricity costs by optimizing operation times of electric home appliances and by supplying energy from the energy storage system such as battery power supply and electrical vehicles (EV). In this paper, we formulate a mixed integer liner programming (MILP) to minimize electricity costs and maximize consumer satisfaction level in smart houses. We evaluate our proposed MILP from viewpoints of electricity cost and consumer satisfaction level and show that consumer satisfaction level is improved by introducing an energy storage system in smart houses.