Abstract: The present invention is provided with: a player action prediction unit that predicts the action of a player and calculates a sales order information prediction value; a market physical restraint prediction unit that predicts the state of a power transfer path, which includes grid-connection line available capacity indicating excess transferred power between areas, and calculates a prediction value for the state of the power transport path; and a market prediction unit that predicts a market price on the basis of the sales order information prediction value and the prediction value for the power transfer path state.

Abstract: To improve a prediction accuracy of future demand. A demand prediction system includes a storage device and a processor which is connected to the storage device. The processor is configured to associate time-sequential load data of a resource demand of a plurality of consumers in a consumer set to a plurality of groups, and the storage device is configured to acquire demand pattern data indicating a shape representing the load data in each group and the number of consumers belonging to each group, and calculate shape data indicating a shape of the time-sequential load data of the demand of the consumer set in a predetermined prediction target period on the basis of a record value of the demand pattern data of each group and a record value of the number of consumers of each group.