Abstract: An electric power trading support system includes a demand prediction unit, a demand prediction error evaluation unit, a demand predicted value upward adjustment ratio (quantity) setting unit, a private power generation/power purchase ratio (quantities) setting unit, an optimization unit for evaluating optimum values of the demand predicted value upward adjustment ratio (quantity) and the self power generation/power purchase ratio (quantities) based on costs, and a display unit for displaying the optimum values evaluated by the optimization unit, maximizing profit to an electric power retailer by minimizing the cost for power generation and power purchase when the electric power retailer sells electric power by use of a private power generator and backup electric power purchased from an electric power company.

Abstract: A memory unit stores selling electricity income data; profit data from the selling electricity, electricity generation cost at power plant, domestic carrying-in cost from the discharge at a discharge port to the carrying-in the power plant, importation cost from the shipping port of the producing country to the discharge port, and producing country carrying-out cost data from exploitation of the fuel through an oil refinery to the carrying-out to the discharge port. A calculation unit calculates a netback whole value of the fuel by subtracting an amount of profit data and an amount of electricity generation cost from an amount of the selling electricity income data.

Abstract: An electric power trading support system includes a demand prediction unit, a demand prediction error evaluation unit, a demand predicted value upward adjustment ratio (quantity) setting unit, a private power generation/power purchase ratio (quantities) setting unit, an optimization unit for evaluating optimum values of the demand predicted value upward adjustment ratio (quantity) and the self power generation/power purchase ratio (quantities) based on costs, and a display unit for displaying the optimum values evaluated by the optimization unit, maximizing profit to an electric power retailer by minimizing the cost for power generation and power purchase when the electric power retailer sells electric power by use of a private power generator and backup electric power purchased from an electric power company.