Energy management apparatus and energy management method

An energy management method performed by a device having a control circuit, the method comprising:

• predicting energy generation for each time zone of a plurality of time zones;
• predicting energy consumption for each time zone of the plurality of time zones;
• computing a required quantity of power for each time zone of the plurality of time zones based on the predicted energy generation and the predicted energy consumption;
• determining a power purchase time and a quantity of power to be purchased based on the required quantity of power for each time zone of the plurality of time zones and a Time of Use (TOU);
• and
• obtaining power based on the determined power purchase time and the determined quantity of power,
• wherein the computing the required quantity of power for each time zone of the plurality of time zones further comprises:
• calculating a required quantity of power on a daily total basis using the predicted energy generation and the predicted energy consumption;
• computing the predicted energy generation and the energy consumption for each time zone of the plurality of time zones;
• and
• compensating for the required quantity of power for each time zone of the plurality of time zones by compensating for the predicted energy generation and the predicted energy consumption for each time zone of the plurality of time zones at a predetermined time before a time point at which TOU rises.