A charged power control system comprising: a plurality of chargers (2-1, 2-2,..., 2-N); a switchboard configured to receive electric power from a power network and supply the electric power to the plurality of chargers (2-1, 2-2,..., 2-N) and electrical installations (1-1, 1-2, 1-3,..., 1-M) other than the chargers (2-1, 2-2,..., 2-N); a first power measuring unit configured to measure consumed power of the electrical installations (1-1, 1-2, 1-3,..., 1-M) other than the chargers (2-1, 2-2,..., 2-N); a second power measuring unit configured to measure consumed power of the respective chargers (2-1, 2-2,..., 2-N); an AC/DC conversion unit configured to convert the electric power supplied from the switchboard from an alternating current into a direct current and supply the resulting electric power to the chargers (2-1, 2-2,..., 2-N); and a power control unit configured to determine allocated power to the charger (2-1, 2-2,..., 2-N), wherein the charger (2-1, 2-2,..., 2-N) includes a charger control unit configured to receive a notification of the allocated power and determine, within a range not exceeding the allocated power, a charging current supplied to a secondary battery connected thereto; and a variable constant current circuit configured to output the determined charging current to the secondary battery, wherein the power control unit is configured to determine allocated power to the charger (2-1, 2-2,..., 2-N) on the basis of the consumed power of the other chargers, the consumed power of the electrical installations (1-1, 1-2, 1-3,..., 1-M) other than the chargers (2-1, 2-2,..., 2-N), conversion efficiency of the AC/DC conversion unit, and conversion efficiency of the variable constant current circuit. a plurality of chargers (2-1, 2-2,..., 2-N); a switchboard configured to receive electric power from a power network and supply the electric power to the plurality of chargers (2-1, 2-2,..., 2-N) and electrical installations (1-1, 1-2, 1-3,..., 1-M) other than the chargers (2-1, 2-2,..., 2-N); a first power measuring unit configured to measure consumed power of the electrical installations (1-1, 1-2, 1-3,..., 1-M) other than the chargers (2-1, 2-2,..., 2-N); a second power measuring unit configured to measure consumed power of the respective chargers (2-1, 2-2,..., 2-N); an AC/DC conversion unit configured to convert the electric power supplied from the switchboard from an alternating current into a direct current and supply the resulting electric power to the chargers (2-1, 2-2,..., 2-N); and a power control unit configured to determine allocated power to the charger (2-1, 2-2,..., 2-N), wherein the charger (2-1, 2-2,..., 2-N) includes a charger control unit configured to receive a notification of the allocated power and determine, within a range not exceeding the allocated power, a charging current supplied to a secondary battery connected thereto; and a variable constant current circuit configured to output the determined charging current to the secondary battery, wherein the power control unit is configured to determine allocated power to the charger (2-1, 2-2,..., 2-N) on the basis of the consumed power of the other chargers, the consumed power of the electrical installations (1-1, 1-2, 1-3,..., 1-M) other than the chargers (2-1, 2-2,..., 2-N), conversion efficiency of the AC/DC conversion unit, and conversion efficiency of the variable constant current circuit.