Apparatus and methodology are provided for measuring energy, particularly in a useful way for a multiphase system. Individual, like single-phase metrology blocks are provided to monitor energy in selected phases of a multiphase system. Individual data from a relatively upstream metrology block is passed to a relatively downstream metrology block, with the data stream being concatenated as the stream tracks from one metrology block to another. Energy data is coded as a predetermined small quantum of energy such that the last metrology block in a seriatim configuration of such metrology blocks may compute total energy consumption in the effective multiphase system by simple addition of the energy quantum data arriving at such last metrology block.