The sixth edition of the InnoGrid2020+ held in Brussels was an excellent opportunity to exhibit and share latest project results and general project information with interested stakeholders. Organised by the European Network of Transmission System Operators for Electricity (ENTSO-E) and the European Distribution System Operators for Smart Grids (EDSO), this year’s conference focused on the arising “network of networks”, where power grids and transport, telecom and IT, digital and physical link up in an unprecedented manner. Special attention was paid to the rapidly evolving transmission-distribution interface.