A household electric appliance and a household electric system are provided which are capable of quickly responding to the electric power demand in which the peak cut of the power consumption is requested. The household electric appliance comprises: a receiving unit that receives a request for a peak cut of power consumption at a predetermined rate from a remote controller and a mobile terminal; a drive unit that drives a power-consuming object to be driven; and a control unit that controls an action of the drive unit. The control unit, in the case of reception of the peak cut request from the remote controller or the mobile terminal, controls the action of the drive unit so as to cut a maximum value of the power consumption within the appliance based on the requested rate.