Project

Current studies show that Germany is in third place of all G20 countries in terms of per capita emissions in the building sector. On the one hand, this is due to the high number of buildings that were constructed before the first Heat Protection Regulation in 1978 and therefore were built with low energy requirements. On the other, the renovation rate for existing buildings has stagnated for years at less than 1 percent per year and there is no discernible acceleration in energy efficiency in the heating sector. Sector coupling is seen as a “key to a continued successful energy transition” to “make progress not only with electricity, but also with the all-important heat”. Based on the findings of this project, the technical, economic, ecological and social prerequisites, influencing factors, methods and potentials for a climate-neutral building stock in 2050 are to be analyzed, demonstrated and evaluated.

With this project, the accompanying research addresses the central issues for achieving a climate-neutral building stock in Germany. In addition to building renovation as a core task of the energy transition, new construction as a driver of innovation, smart building operation to avoid rebound effects and the integration of individual buildings into the overall system are being considered.

For existing buildings, holistically optimized renovation and modernization measures for different building types and roadmaps for their implementation are developed. The robustness against certain user-specific and economic boundary conditions will also be examined. Scenarios for the energy requirements of the German building stock up to 2050 will also be modeled.

In addition, the accompanying research team will quantify and evaluate the energy potential of smart building technologies and control systems and create a load profile database for different types of consumption and building types. The experts will also determine flexibility potentials and grid-responsive design options for individual buildings depending on the building type and urban structure.

1 October 2020 until 31 December 2024

• Forschungszentrum Jülich GmbH

• RWTH Aachen
• Fraunhofer Institute for Building Physics IBP

https://www.energieforschung.de/vernetzen/begleitforschung/bf-energiewendebauen

Szenariogenerator

• Alibas, Sirin, Mahsa Bagheri, and Songmin Yu. “Analyse der Einsparpotenziale an Energie und CO2-Emissionen im deutschen Gebäudebestand unter verschiedenen Szenarien.” Fraunhofer ISI, 2024. https://doi.org/10.24406/publica-4021.
• Bagheri, Mahsa, Ewa Dönitz, Songmin Yu, and Heike Brugger. “Exploration of Qualitative Scenarios towards Climate Neutrality of the German Building Sector,” 2024. https://doi.org/10.24406/publica-3335.
• Alibas, Sirin, and Songmin Yu. “Developing a Regionalized Representative Building Stock Model for Germany,” 2024. https://doi.org/10.24406/publica-3336.
• Brunzema, Iska, and Elisabeth Dütschke. “Who Builds the Energy Transition? Actors and Networks in a German Research Initiative,” 2022. https://doi.org/10.24406/publica-410.