Apparatus for controlling supply of electric power and apparatus for controlling electric power

A power control apparatus which controls use of electric power of an electronic apparatus in a facility, the power control apparatus comprising:

• a storing unit which stores a power supply-distribution capacity for the electronic apparatus with respect to each state indicating status of use of electric power in the electronic apparatus;
• a communication unit which receives a state change request from the electronic apparatus;
• a specifying unit which specifies, based on the received state change request, the power supply-distribution capacity for the electronic apparatus by referring to contents stored in the storing unit;
• a sender unit which sends, to the power control apparatus, a change request to change the power supply-distribution capacity supplied to the electronic apparatus into a specified power supply-distribution capacity;
• a receiver unit which receives, as a result of the change request which has been sent, a change response indicating whether or not a change in the power supply-distribution capacity supplied to the electronic apparatus is allowable, from the power control apparatus;
• and
• a power control unit which controls the use of electric power of the electronic apparatus based on the received change response.

A power supply control method comprising:

• receiving a change request of a power supply-distribution capacity supplied to one electronic apparatus among a plurality of electronic apparatuses from a power control apparatus controlling use of electric power in the one electronic apparatus;
• calculating a sum of a power supply-distribution capacity supplied to the one electronic apparatus in response to the received change request and power supply-distribution capacities supplied to the other electronic apparatuses except the one electronic apparatus;
• comparing a maximum power supply-distribution capacity to the sum of the calculated power supply-distribution capacities;
• determining, based on a result of the comparison, whether or not a change in the power supply-distribution capacity supplied to the one electronic apparatus is allowable;
• and
• sending a result of the determination to the power control apparatus.