DC POWER SUPPLY AND DISTRIBUTION SYSTEM

The present DC power supply and distribution system includes a plurality of distribution lines (L1, L2) provided respectively corresponding to a plurality of loads (A1, A2), a first converter (4) to convert an AC voltage from a commercial AC power source (10) into a plurality of DC voltages (VA, VB) and supply the DC voltages respectively to the distribution lines, a second converter (7) to convert a DC power from a power generation and storage source (11) into a plurality of DC powers (P1, P2) and supply the DC powers respectively to the distribution lines, and a power controller (9A) to control the DC powers such that the efficiency of the first converter is increased, based on information related to the efficiency of the second converter.