An operation support system configured to support an operation of a plurality of pieces of electrical equipment in a house, comprising: a weather information acquirer that is configured to acquire hourly weather information and forecast information related to weather forecast by way of a network; a electric power meter that is configured to measure the electric power that is generated by a power generator that supplies the electric power to the plurality of pieces of electrical equipment and to output a signal corresponding to the measurement result; a detector (31-33,40,61) that is configured to detect a state of use of the plurality of pieces of electrical equipment that is used by a user; a memory that is configured to store the weather information (WR1,WR2), the state of use of the plurality of pieces of electrical equipment, and the output signal corresponding to the measurement result that have been correlated over time; an identifier that is configured to calculate an estimated amount of power consumption based on the forecast information, the state of use of the plurality of pieces of electrical equipment, and the output signal corresponding to the measurement result, and to identify, based on the state of use of the plurality of pieces of electrical equipment and the weather information, the forecast information, and the estimated amount of power consumption, at least one piece of electrical equipment to be proposed to be activated at a point in the future to the user from among the plurality of pieces of electrical equipment so as to minimize power consumption or electricity cost; a display that is configured to display (i) the weather information, the forecast information, the estimated amount of power consumption, the state of use of the plurality of pieces of electrical equipment, and the output signal corresponding to the measurement resultthat are stored in the memory and (ii) identification results of the identifier; an interface configured for the user to input a schedule for operating the plurality of pieces of electrical equipment; and a notifier configured for notifying the user of a timing for operating the plurality of pieces of electrical equipment based on the schedule. a weather information acquirer that is configured to acquire hourly weather information and forecast information related to weather forecast by way of a network; a electric power meter that is configured to measure the electric power that is generated by a power generator that supplies the electric power to the plurality of pieces of electrical equipment and to output a signal corresponding to the measurement result; a detector (31-33,40,61) that is configured to detect a state of use of the plurality of pieces of electrical equipment that is used by a user; a memory that is configured to store the weather information (WR1,WR2), the state of use of the plurality of pieces of electrical equipment, and the output signal corresponding to the measurement result that have been correlated over time; an identifier that is configured to calculate an estimated amount of power consumption based on the forecast information, the state of use of the plurality of pieces of electrical equipment, and the output signal corresponding to the measurement result, and to identify, based on the state of use of the plurality of pieces of electrical equipment and the weather information, the forecast information, and the estimated amount of power consumption, at least one piece of electrical equipment to be proposed to be activated at a point in the future to the user from among the plurality of pieces of electrical equipment so as to minimize power consumption or electricity cost; a display that is configured to display (i) the weather information, the forecast information, the estimated amount of power consumption, the state of use of the plurality of pieces of electrical equipment, and the output signal corresponding to the measurement resultthat are stored in the memory and (ii) identification results of the identifier; an interface configured for the user to input a schedule for operating the plurality of pieces of electrical equipment; and a notifier configured for notifying the user of a timing for operating the plurality of pieces of electrical equipment based on the schedule.