SUPPLY AND DEMAND ADJUSTING DEVICE, SUPPLY AND DEMAND ADJUSTING SYSTEM, AND ENERGY SUPPLY AND DEMAND ADJUSTING METHOD

摘要

A supply and demand adjusting device: sets a requested reduction amount of energy at date and time when energy usage is scheduled to be reduced to be larger than a target value, and notifies a supply and demand mediating device of the requested reduction amount and the scheduled date and time together; receives a total amount of reducible energy reducible by the consumer from the supply and demand mediating device as a reply to the notification; as the scheduled date and time approaches, inquires of the supply and demand mediating device about a total amount of reducible energy reducible by the consumer at the time of the inquiry; decreases the requested reduction amount stepwise so as to make the requested reduction amount approach the target value; and each time the requested reduction amount is decreased notifies the supply and demand mediating device of the resultant requested reduction amount.