| 摘要 |
There is provided a device for determining a rental capacity of a storage battery in which an appliance load predicting unit predicts a demand amount of a household electrical appliance; a power generator predicting unit predicts a power generation amount of a power generator; a constraint condition creating unit creates a constraint condition including first and second constraint expressions, the former matching the predicted demand amount with total electric power supplied to the household electrical appliance and the latter matching the predicted power generation amount with a sum of a power sale amount to the power supplier, a charge amount into the storage battery, and a supply amount to the household electrical appliance; an objective function creating unit creates an objective function based on a sale benefit function, a rental benefit function, a purchase cost function; and an optimization computing unit optimize the objective function to obtains a rental capacity.
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