Method and apparatus for reducing energy consumption using user's inconvenience

PURPOSE: A method and device for saving energy are provided to minimize electric charges by reducing the power consumption of a plurality of power devices in consideration of the inconvenience of a user at each time interval. CONSTITUTION: The allowable inconvenience of a user is set. The total power saving rate is determined by using the allowable inconvenience. The total power saving rate is allocated to a plurality of power devices at a specific time section. The power of the plurality of power devices is reduced by corresponding to the allocated power saving rate at the specific time section.