Patent ID: 8860253

Claim:
A power control system for a building including a solar power generator and a power storage device, comprising: initial setting means for setting a calculation condition required for control of the solar power generator and the power storage device; measurement means for measuring a power generation amount of the solar power generator and a power consumption of the building; power price-setting means for setting a power price which changes in accordance with a time and a purchase price that an electric power company pays to purchase the power generated by the solar power generator; control pattern storage means for storing a plurality of control patterns with a discharge start time of the power storage device as a variable factor; calculation period-setting means for setting a past calculation period which is a standard for calculating an electric power charge of the building; electric power charge calculation means for calculating each electric power charge by performing simulation based on each of the control patterns with a past measurement value measured by the measurement means and the power price set by the power price-setting means for the building in the calculation period; control pattern selection means for selecting one control pattern by evaluating a calculation value calculated by the electric power charge calculation means with a predetermined standard; and a controller which performs control after the calculation in accordance with the control pattern selected by the control pattern selection means.