System and method for electrical power and/or energy metering on multiple channels

System for power and/or energy consumption metering on an AC powerline network, said network supplying a plurality of channels with a respective electrical load, the system comprising:

• A central unit connected to said AC powerline network, said central unit comprising a single central voltmeter and a power supply unit, said central voltmeter being supplied by the power supply unit;
• A plurality of clamped-on units, distributed over each channel to be measured, each clamped-on unit being clipped around existing cables of said AC powerline network, and comprising a current transformer in order to measure current values,
• wherein said plurality of clamped-on units are connected to the central unit for data transmission and synchronization, and for power supply by said power supply unit,
• wherein a wireless link is provided between the plurality of clamped-on units and the central unit, wherein said clamped-on units are mounted on an electrical panel, and wherein an induction coil is further provided around said electrical panel for power transmission to said clamped-on units, and data transmission to and from said clamped-on units.