Institute Profile

Fraunhofer Institute for Energy Economics and Energy System Technology IEE

The Fraunhofer IEE in Kassel researches for the national and international transformation of energy systems.
It develops technical and economic solutions in order to further reduce the costs of using renewable energies, to secure the supply despite volatile generation, to ensure grid stability at the high level and to promote the success of the energy transition business model.

Business units

Our service portfolio deals with current and future challenges faced by the energy industry.

We explore and develop solutions for sustainably transforming renewable based energy systems.

  • Analysis and consulting for energy economics    
  • Energy meteorology information systems
  • Digital portfolio management
  • Grid planning and operation
  • Power electronics and electric drive systems
  • Hardware in the loop systems
  • Systems engineering
  • Measuring and testing
  • Wind resource assessment with LiDAR

Research fields

  • Energy informatics
  • Energy meteorology and geo informatic systems
  • Energy economics and system design
  • Energy process engineering and energy storage
  • Grid planning and grid operation
  • Grid stability and converter technology
  • Thermal energy technology

Test Centers and Laboratories

The Fraunhofer IEE disposes extensive testing and experimental facilities, laboratories, and state-of-the-art equipment.

Together with the know-how of our scientists and engineers, these facilities mean that the institute is able to offer its customers and partners future oriented research and development services and infrastructure. Our main facilities and activities are:

  • SysTec: Test center for smart grids and electro mobility
  • 200 meter wind measuring mast, laser wind measuring technics and wind measuring network
  • Laboratory for control systems for large wind turbines
  • Photovoltaic systems test field
  • Experimental center for bioenergy system technology
  • Accredited laboratory for inverters and EMC
  • Battery storage laboratory


The Fraunhofer Institute for Energy Economics and Energy System Technology IEE in Kassel was established in 2018 from the energy system technology branch of Fraunhofer IWES.

The Fraunhofer Institute for Wind Energy and Energy System Technology IWES had two main thematic areas, wind energy (northwest) and energy system technology (Kassel). It was established in 2009 as a merger of the former Fraunhofer Center for Wind Energy and Maritime Engineering CWMT in Bremerhaven and the Institute for Solar Energy Technology ISET founded 1988 in Kassel.

Since its founding in 2009, the Fraunhofer Institute for Wind Energy and Energy System Technology IWES had grown to almost 600 employees. As part of their strategic development and alignment, both divisions of the institute have developed largely independent profiles. The Executive Board and Senate of the Fraunhofer-Gesellschaft have therefore decided to continue the branches of the institute as independent institutes as of January 2018. For customers and industry partners, the sharpening of the profile will facilitate a clear allocation of activities.


Management of
the institute


Board of Trustees

Funding by


IEE Locations