Power supply system, server, and power generation facility

A server communicable with a power generation facility configured to supply power to a consumer,

• the power generation facility including a fuel cell configured to generate, using fuel gas supplied via a supply path of the fuel gas to the consumer, power to be supplied to the consumer, and a gas amount measurement unit configured to measure a supply amount of the fuel gas used for the power generation of the fuel cell,
• the server comprising:
• an acquisition unit configured to acquire information concerning a supply amount of the fuel gas which was supplied to the consumer in a predetermined period;
• and
• a specifying unit configured to specify, based on a measurement result, in the predetermined period, of the gas amount measurement unit received from the power generation facility and the information acquired by the acquisition unit, a supply amount of the fuel gas which was not used for the power generation of the fuel cell in the supply amount of the fuel gas which was supplied to the consumer in the predetermined period.

A power generation facility, communicable with a server, for supplying power to a house, comprising:

• a fuel cell configured to be supplied with fuel gas via a supply path of the fuel gas to the house, and to generate, using the fuel gas, power to be supplied to the house;
• and
• a gas amount measurement unit configured to measure a supply amount of the fuel gas supplied to the fuel cell,
• wherein a measurement result of the gas amount measurement unit is transmitted to the server.