POWER CALCULATION APPARATUS AND POWER CALCULATION METHOD

A power calculation apparatus predicting and calculating an amount of power suppliable from a vehicle having a battery to a power grid via a connection apparatus, the power calculation apparatus includes a microprocessor and a memory connected to the microprocessor. The microprocessor is configured to perform: predicting a position of the vehicle after a predetermined duration; predicting a degree of likelihood of connection of the vehicle to the connection apparatus after the predetermined duration, based on a predicted position of the vehicle after the predetermined duration and the connection apparatus; and predicting the amount of power suppliable from the vehicle to the power grid after the predetermined duration, based on the degree of likelihood.