Charge calculation method, charge calculation device and charge calculation program

摘要

PROBLEM TO BE SOLVED: To provide a new system for performing a charge request to a power use of each user, while binding the users by a retail entrepreneur of power and suppressing the excess of a power use amount as a whole.SOLUTION: A charge calculation method calculates an usage fee of power relating to power incoming facilities of a plurality of users connected to a commercial power source provided by an electric power supplier and an energy supply facility controllable by a retail entrepreneur of the power. Specifically, a computer executes: a step of acquiring the measured power consumption in a predetermined period from a measurement device provided in each power incoming facility for measuring a measured power consumption in the power incoming facility; and an usage fee calculation step of adding the usage fee based on a decrement of the power received from the commercial power source by the energy supply from the energy supply facility where the energy is operated or output when a sum total of the measured power consumption in the plurality of power incoming facilities exceeds the predetermined threshold value and the usage fee for the power actually supplied from the commercial power supply source and calculating as a billing amount to the users.SELECTED DRAWING: Figure 3