A demand regulating system, comprising: a storage unit that store priority information indicating a priority value for each of a plurality of consumption devices that consume a resource supplied from a supply facility; an operation unit that is configured to receive measurement information indicating a measurement result for consumption of the resource by the plurality of consumption devices, calculate a regulating quantity of demand for the resource on the basis of the measurement information, select from among the plurality of consumption devices, on the basis of the priority information and the regulating quantity, a plurality of control-target devices, which are targeted for demand regulating control reducing consumption of the resource, transmit a first control instruction instructing the demand regulating control to demand side equipment that includes the plurality of control-target devices, and store result information indicating the first control instruction in the storage unit; a control unit that is provided in the demand side equipment, configured to receive the first control instruction, and execute the demand regulating control on the basis of the first control instruction; and an input unit that is provided in the demand side equipment, configured to receive a first input operation by a consumer, and transmit first request information requesting a change in the priority value of each of the plurality of control-target devices, to the operation unit in accordance with the first input operation; wherein the operation unit, upon receiving the first request information, is configured to specify the plurality of control-target devices on the basis of the result information and the first request information, and change the priority value of each of the plurality of control-target devices in the priority information; characterized in that the operation unit is configured to select the plurality of control-target devices from among the plurality of consumption devices in descending order of the priority value, and upon receiving the first request information, reduce the priority value of each of the plurality of control-target devices in the priority information. a storage unit that store priority information indicating a priority value for each of a plurality of consumption devices that consume a resource supplied from a supply facility; an operation unit that is configured to receive measurement information indicating a measurement result for consumption of the resource by the plurality of consumption devices, calculate a regulating quantity of demand for the resource on the basis of the measurement information, select from among the plurality of consumption devices, on the basis of the priority information and the regulating quantity, a plurality of control-target devices, which are targeted for demand regulating control reducing consumption of the resource, transmit a first control instruction instructing the demand regulating control to demand side equipment that includes the plurality of control-target devices, and store result information indicating the first control instruction in the storage unit; a control unit that is provided in the demand side equipment, configured to receive the first control instruction, and execute the demand regulating control on the basis of the first control instruction; and an input unit that is provided in the demand side equipment, configured to receive a first input operation by a consumer, and transmit first request information requesting a change in the priority value of each of the plurality of control-target devices, to the operation unit in accordance with the first input operation; wherein the operation unit, upon receiving the first request information, is configured to specify the plurality of control-target devices on the basis of the result information and the first request information, and change the priority value of each of the plurality of control-target devices in the priority information; characterized in that the operation unit is configured to select the plurality of control-target devices from among the plurality of consumption devices in descending order of the priority value, and upon receiving the first request information, reduce the priority value of each of the plurality of control-target devices in the priority information.