In this project, a team of scientists from the three Fraunhofer Institutes ISE, IBP, and ISI is supporting "project management Jülich" in its accompanying research on energy transition construction. This joint effort focuses on several areas: Firstly, cross-sectional evaluations of completed and ongoing research projects from the "Energiewendebauen" (Energy Transition Buildings) funding program are being carried out, which aim to bring together the results from the many individual projects and place them in a broader context. These cross-sectional evaluations cover topics related to the energy transition in the areas of buildings and districts, renovation, heat network expansion, integration of renewable energies, and more. WiSE's work also provides the basis for identifying new research topics and providing imputs for the further development of the BMWE's 8th Energy Research Program. In addition, the PTJ is supported in the planning and execution of events.