This draft European Standard covers the requirements applicable to the Data Handling System (DHS) of an Energy Measurement System. This document also includes the basic requirements for the Data Collection Service on-ground, relating to the acquisition and storage and export of Compiled Energy Billing Data. The Conformity Assessment arrangements for the DHS and the DCS are specified in this document. The settlement system is outside the scope of this standard, and the specification of the interface between DCS and settlement system is outside the scope of this standard.