DC substation comprising: - a first terminal adapted to connect the DC substation to an AC electrical power grid; - a plurality of second terminals (22, 24, 26) adapted to provide or receive DC current to or from a respective load (14, 16, 18); - a current supply chain comprising an AC electricity meter, an AC/DC converter, and a branching circuit, the AC/DC converter being electrically connected to the first terminal, the AC electricity meter being connected in series with the AC/DC converter, wherein the AC electricity meter is configured for measuring an electrical energy, and the branching circuit providing respectively one branch (48, 50, 52) for each second terminal (22, 24, 26), each branch (48, 50, 52) being connected to a DC terminal of the AC/DC converter; - a plurality of determination devices (54, 56, 58, 60); the DC substation being characterized in that: - each branch comprises a determination device (54, 56, 58) for determining a direct current in the respective branch (48, 50, 52), or - each branch except one is provided with a determination device (54, 56, 58) for determining a direct current at least in each branch (48, 50, 52) except one and a determination device is provided to measure the direct current between the branching circuit and the AC/DC converter; the DC substation further comprising: - a voltage meter for determining the voltage at the branching circuit; - a controller adapted to receive the measured values from the AC electricity meter, each determination device (54, 56, 58, 60) and the voltage meter and to determine, for each branch (48, 50, 52), the respective electrical energy consumption or production based on the received voltages, currents and electrical energy. - a first terminal adapted to connect the DC substation to an AC electrical power grid; - a plurality of second terminals (22, 24, 26) adapted to provide or receive DC current to or from a respective load (14, 16, 18); - a current supply chain comprising an AC electricity meter, an AC/DC converter, and a branching circuit, the AC/DC converter being electrically connected to the first terminal, the AC electricity meter being connected in series with the AC/DC converter, wherein the AC electricity meter is configured for measuring an electrical energy, and the branching circuit providing respectively one branch (48, 50, 52) for each second terminal (22, 24, 26), each branch (48, 50, 52) being connected to a DC terminal of the AC/DC converter; - a plurality of determination devices (54, 56, 58, 60); the DC substation being characterized in that: - each branch comprises a determination device (54, 56, 58) for determining a direct current in the respective branch (48, 50, 52), or - each branch except one is provided with a determination device (54, 56, 58) for determining a direct current at least in each branch (48, 50, 52) except one and a determination device is provided to measure the direct current between the branching circuit and the AC/DC converter; - each branch comprises a determination device (54, 56, 58) for determining a direct current in the respective branch (48, 50, 52), or - each branch except one is provided with a determination device (54, 56, 58) for determining a direct current at least in each branch (48, 50, 52) except one and a determination device is provided to measure the direct current between the branching circuit and the AC/DC converter; the DC substation further comprising: - a voltage meter for determining the voltage at the branching circuit; - a controller adapted to receive the measured values from the AC electricity meter, each determination device (54, 56, 58, 60) and the voltage meter and to determine, for each branch (48, 50, 52), the respective electrical energy consumption or production based on the received voltages, currents and electrical energy. - a voltage meter for determining the voltage at the branching circuit; - a controller adapted to receive the measured values from the AC electricity meter, each determination device (54, 56, 58, 60) and the voltage meter and to determine, for each branch (48, 50, 52), the respective electrical energy consumption or production based on the received voltages, currents and electrical energy.