ENTSO-E, for reasons of transparency, has been monitoring the implementation process of the Connection Network Codes (CNC) in the European countries reporting the necessary and publicly available information. The available information, links to national websites, and contact details are provided below.

In addition, ENTSO-E deployed the Implementation Monitoring Platform (IMP) for the CNC for handling internal monitoring activities. The IMP provides access to implementation monitoring reports that identified any divergences in the implementation of the European CNC at national level by each Member State, as well as non-exhaustive parameters for all CNCs of all countries falling within the scope of application.