Energy-optimized buildings represent a focus of our researchers' work—and this from the planning stage onwards. For example, they develop energy and climate protection concepts for municipalities and institutions, accompany scientific research programs and are actively involved in standardization and the introduction and tightening of minimum standards in the field of energy-efficient buildings. In addition, our experts transfer innovative district concepts, building and facade technologies into practical application in customized evaluation programs. The core aspect is the use of demonstration buildings, which make it possible to evaluate both overall concepts and innovative structural and systems engineering components in terms of energy and to make statements about the practicability, energy efficiency and user-friendliness of the structural implementation. The Fraunhofer Energy Alliance is thus an important link between building research and building practice.

Competencies of the Fraunhofer Energy Alliance in the Field Energy Urban

Supply in Buildings - Planning

Energy supply to buildings accounts for around 35 percent of final energy consumption and 30 percent of CO2 emissions in Germany. The building sector therefore plays a special role in achieving national climate protection targets. The goal of a nearly carbon-neutral building stock by 2050 is to be achieved by improving building efficiency and decarbonizing the energy supply. Researchers of the Fraunhofer Gesellschaft accompany this task with feasibility studies, potential investigations, scenario analyses and scientific evaluations on different levels. This includes the development of energy and climate protection concepts for municipalities, ministries and institutions, the scientific support of research programs, active participation in standardization and norming as well as the evaluation of funding concepts and the introduction and tightening of minimum standards in the field of efficient buildings. In addition to decentralized energy supply concepts, our experts also develop centralized solutions for buildings and districts with heating networks incorporating renewable energies. To support the development and planning of climate-neutral supply concepts, we develop digital planning tools for different target groups and fields of application.




»BIM-based tools and technologies for a fast and efficient refurbishment of residential buildings – BIM4REN« aims to counteract this trend and to introduce innovative and user-friendly BIM tools that enable cross-industrial sector work between SMEs.



Together with partners, Fraunhofer IBP is working on cross-evaluations relating to specific topics. Through various networking, it is also promoting inter-project collaboration and assisting with public relations work. 


Climate neutrality in Oldenburg

Fraunhofer IBP supported the city of Oldenburg on its path to climate neutrality by evaluating three different scenarios.

Energy Supply in Buildings - Operation

Tailor-made evaluation programs are used to transfer innovative district concepts, building and facade technologies into practical use. To this end, researchers at the Fraunhofer-Gesellschaft use test buildings on outdoor test sites and evaluate buildings in real use, both in Germany and abroad. Such demonstration buildings provide an important link between building research and building practice. They show approaches, demonstrate feasibility and encourage imitation. Building and plant concepts are equipped with measurement technology during construction, which allows both the overall concept and innovative structural and plant components to be evaluated in terms of energy. After the measurement period, the measurement data can be used to make very valid statements about the practicability, energy efficiency and user-friendliness of the structural implementation. Our experts use methods of automated fault detection (rule-based or model-based) as well as methods for model-based operational optimization (model predictive control).




In the collaborative »OBSERVE« project, the methods developed in the »ModBen« and »ModQS« for monitoring and optimization of the energetic operation of heating systems will be extended and applied to other facilities systems.



»EnergieDigital« aims to establish an integral systematic for linking the domains building services engineering and building information modelling (BIM) in order to safely achieve highly energy-efficient buildings.



The research project »BUiLD-DIGITiZED« develops BIM methods for the commissioning and operational optimization of technical building equipment systems and demonstrates them on a lowest-energy building. 

Demand-oriented Energetic System Parameterization

Continuously rising energy costs and the CO2 price of fossil fuels, as well as an increasing awareness of the existential importance of climate neutrality, have ensured that numerous innovative developments for the use of regenerative energy sources and energy-saving construction have emerged in recent years. The resulting change in terms of technology requirements in turn demands constant adaptation and further development of the individual systems as well as their optimal interaction. For this purpose, the researchers support the commissioning teams on site with their technical expertise. Among other things, they use concepts of virtual commissioning of building automation systems based on Model-in-the-Loop (MiL), Software-in-the-Loop (SiL) and Hardware-in-the-Loop (HiL).



Herzo Op

The aim of the collaborative project was to scientifically study the terraced housing complex over a period of three years and to continue optimizing its operation. To monitor the project and to develop control strategies, different disciplines were combined.


LowEx-Bestand analysis

In the project  »LowEx-Bestand« LowEx system concepts for the heat supply of existing multi-family buildings are comprehensively analyzed, further developed and demonstrated.



The »GENERIS« software from Fraunhofer IBP offers an uncomplicated solution for preparing building LCA’s. The software tool has already been successfully implemented in various ways in research and industrial projects.