We design 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




Data-based methods for the development of a digital planning and simulation tool for energy supply in neighborhoods.



MTD® – Micro Turbine Drilling

Process to increase permeability even in very hard extraction horizons.




District and process heat supply by heat pumps as a replacement for coal combustion.



Geothermal paper drying

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




Solving problems in drilling for geothermal resources.



D2 Grids

The aim of the d2grids project is to build a 5th generation heating and cooling network on Mark 51°7, the former Opel site in Bochum.