Five Horizon 2020 projects joint forces for the EUSEW – European Sustainable Energy Week, co-organising a joint meeting in the framework of the Architects’ Council of Europe’s one-day symposium. Alexandros Deligiannis of the iBroad project, coordinated by Sympraxis Team, along with ALDREN, Fit-to-NZEBHAPPEN and TripleA-reno, presented complementary perspectives and solutions for the attainment of the ambitious goal of improving the energy efficiency of European buildings as required by the Paris Climate Agreement. The BUILD UP Platform filmed the entire symposium for future projection, thus greatly expanding its audience. The collaboration between the five projects will continue on the basis of their scientific scopes.