This report provides a comprehensive overview of the results and key findings of the Interoperability test (IOP) on Common Grid Models Exchange Standard (CGMES) version 3.0 organised by the Interoperability Network for the Energy Transition (int:net project) and hosted by ENTSO-E in Brussels. The objective of this test was to foster the harmonisation and interoperability of energy services throughout Europe by focusing on the adoption and implementation of CGMES v3.0, an IEC standard (IEC 61970-600-1&2:2021). The report will be used by the project to further discuss interoperability aspects. It can also be used by organisations implementing CIM, such as ENTSO-E, in addition to Transmission System Operators (TSOs), Distribution System Operators (DSOs) or any project or organisation in general that would like to improve on interoperability.
