Energy setting device, energy setting method, and recording medium

An energy setting method comprising:

• receiving a reduction instruction for reduction in energy of an entirety of subsystems, each subsystem comprising a facility device and a controller configured to control the facility device;
• and
• upon receiving the reduction instruction,
• determining a correlation coefficient between individual energy histories that are histories of consumption energies for the respective subsystems,
• calculating a total margin energy, the total margin energy being a difference between a total target energy and the sum of the individual target energies,
• wherein the individual target energies are each a target value of a consumption energy for a corresponding subsystem of the subsystems,
• wherein the total target energy is a target value of a consumption energy of an entirety of the subsystems, and
• wherein the calculated total margin energy is determined based upon the correlation coefficient, with the total margin energy increasing with an increase in the correlation coefficient, and
• setting each of individual target energies for the respective subsystems such that (i) a sum of the individual target energies that are target values of consumption energies for the respective subsystems is smaller than a total target energy, and (ii) the total margin energy is equal to the calculated total margin energy;
• and
• transmitting, to the controller, control-instruction information for instruction of control of the facility device based on the individual target energies,
• wherein the controller controls the facility device such that the consumption of energy of the facility device is equal to the individual target energy.

A non-transitory computer-readable recording medium storing a program for causing a computer to function as:

• a first communication interface configured to receive a reduction instruction for reduction in electrical energy of an entirety of subsystems, each subsystem comprising a facility device and a controller configured to control the facility device;
• a processor configured to, when the first communication interface receives the reduction instruction:
• determine a correlation coefficient between individual energy histories that are histories of consumption energies for the respective subsystems,
• calculate a total margin energy, the total margin energy being a difference between a total target energy and the sum of the individual target energies,
• wherein the individual target energies are each a target value of a consumption energy for a corresponding subsystem of the subsystems,
• wherein the total target energy is a target value of a consumption energy of an entirety of the subsystems, and
• wherein the calculated total margin energy is determined based upon the correlation coefficient, with the total margin energy increasing with an increase in the correlation coefficient, and
• set individual target energies for the respective subsystems, the individual target energies each being a target value of a consumption energy for a corresponding subsystem of the subsystems, such that (i) a sum of the individual target energies is less than a total target energy, and (ii) total margin energy is equal to the calculated total margin energy;
• and
• a second communication interface configured to transmit, to the controller, control-instruction information for instruction of control of the facility device based on the individual target energies set by the processor,
• wherein the controller controls the facility device such that the consumption of energy of the facility device is equal to the individual target energy.