An electric-power management apparatus comprising: a communication section configured to receive electric-power accumulation information showing the amount of electric power accumulated in an electric-power accumulation battery of an electric-power accumulation facility comprising an electrical-charging/discharging control apparatus; and a point issuance section configured to issue points, which correspond to an amount shown by said electric-power accumulation information as said amount of electric power accumulated in said electric-power accumulation battery, to the electric-power accumulation facility, said electric-power management apparatus further having an electric-power management section configured to issue a command to transfer electric power accumulated in said electric-power accumulation battery to an electric-power network and a command to supply electric power from said electric-power network to said electric-power accumulation battery, wherein said communication section transmits said commands issued by said electric-power management section to said electrical-charging/discharging control apparatus, characterized in that said electric-power management section issues said command to transfer electric power accumulated in said electric-power accumulation battery to said electric-power network and said command to supply electric power from said electric-power network to said electric-power accumulation battery on the basis of the price of electric power in an electric-power transaction market, where the electric-power management apparatus acquires information on the amount of electric power accumulated in the electric-power accumulation battery immediately before the electric-power sale and information on the amount of electric power accumulated in the electric-power accumulation battery right after the electric-power sale separately from the operation carried out to acquire information on the amount of electric power accumulated in the electric-power accumulation battery in order to issue points. a communication section configured to receive electric-power accumulation information showing the amount of electric power accumulated in an electric-power accumulation battery of an electric-power accumulation facility comprising an electrical-charging/discharging control apparatus; and a point issuance section configured to issue points, which correspond to an amount shown by said electric-power accumulation information as said amount of electric power accumulated in said electric-power accumulation battery, to the electric-power accumulation facility, said electric-power management apparatus further having an electric-power management section configured to issue a command to transfer electric power accumulated in said electric-power accumulation battery to an electric-power network and a command to supply electric power from said electric-power network to said electric-power accumulation battery, wherein said communication section transmits said commands issued by said electric-power management section to said electrical-charging/discharging control apparatus, characterized in that said electric-power management section issues said command to transfer electric power accumulated in said electric-power accumulation battery to said electric-power network and said command to supply electric power from said electric-power network to said electric-power accumulation battery on the basis of the price of electric power in an electric-power transaction market, where the electric-power management apparatus acquires information on the amount of electric power accumulated in the electric-power accumulation battery immediately before the electric-power sale and information on the amount of electric power accumulated in the electric-power accumulation battery right after the electric-power sale separately from the operation carried out to acquire information on the amount of electric power accumulated in the electric-power accumulation battery in order to issue points.