How and when will the European energy transition succeed? In the EU LIFE project TANDEMS, together with Belgian, Bulgarian and Dutch partner organizations, we are testing possible ways and solutions to produce and market energy in a clean, locally and decentrally managed way. TANDEMS aims to actively engage citizens in the transition to clean energy through knowledge exchange, the development of open collaboration models, and the designing and testing of pilot processes and prototypes. TANDEMS brings together three European regions for this purpose: Antwerp in Belgium, Achterhoek in the Netherlands, and Burgas and Gabrovo in Bulgaria. And we, Oikoplus, supported the project consortium in communicating the project results by implementing an output-oriented participation process and designing a road show.