Fraunhofer Research Institution for Energy Infrastructures and Geothermal Systems IEG

We are designing the climate-neutral energy systems of the future.

Welcome to the Fraunhofer Research Institution for Energy Infrastructures and Geothermal Energy IEG.

We act as a think-tank for the energy transition and develop our ideas from sketch to implementation along the entire value chain of energy system transformation. With our partners from industry and the public sector, we identify projects with great relevance for climate protection, make real applications possible and shape the energy transition. We are located in the structural transformation regions of Lusatia, the Rhineland, and the Ruhr Area, as well as in the industrial region of the Upper Rhine Valley. With the know-how of our team, we support sustainable transformation locally, nationally, and internationally. Our employees combine the necessary expertise in the fields of analysis, operation, and planning of sector-coupled electricity, gas and heating grids, drilling and geotechnologies, energy and process engineering, energy economics, georesources, and geosciences, storage systems, and hydrogen infrastructures.

Do you also want to shape the climate-neutral future? Get in touch with us! 

Selection of projects and fields of research




Provision of cold for cooling laboratories with regenerative environmental cooling.


Business Areas


Research into technical systems for the exploration, exploitation and development of underground reservoirs and storage systems and the technologies required for this.



Geosciences Lab

Research laboratories with state-of-the-art and partly unique test facilities.



Geothermal paper drying

Development of steam generation for paper drying based on deep geothermal heat.