The Netherlands is working on a fully climate neutral built environment by 2050. For the coming years, milestones have been determined and many technical and social innovations will be needed to realize these. The 4TU.Built Environment program Energy Transition is researching technologies and processes to speed up large scale renovation of existing buildings to reduce the energy demand and integrate technologies for the production, storage and distribution of sustainable energy. We do this in close cooperation with public and private parties through the national program BTIC.