| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water supply system capable of reducing power consumption and operation cost while increasing the amount of supplied hot water.SOLUTION: A hot water supply system includes: hot water supply sources 1 of a plurality of systems; and a control device 4 controlling the hot water supply sources 1 of the plurality of systems to operate. Each of the hot water supply sources 1 of the plurality of systems includes a hot water tank 11 storing hot water; and a heat pump 12 heating the hot water of the hot water tank 11. The control device 4 controls the hot water supply sources 1 of all of the systems to perform boiling operation for heating the hot water in the hot water tanks 11 in a first time zone in which a unit price of energy charge is relatively cheap. The control device 4 restricts the number of the hot water supply sources 1 to perform the boiling operation on the basis on at least either information on a plurality of time divisions of a second time zone or information on average power demand in the second time zone in which the unit price of the electric charge is relatively expensive. |
