Technical Information This page lists technical documents made publicly available by Elia in order to support data exchanges implementation. Metering manual: Describes how to access, understand and use messages containing metering data transmitted by Elia. Metering manual for CDS: Describes the information exchange that needs to be set up between the CDS Operator and the Transmission System Operator to allow each party to fulfil their obligations. List of Distribution Grid Operators EAN codes List of Closed Distribution System Operators EAN codes Share