Fraunhofer Institute for Energy Economics and Energy System Technology


Research fields

The Fraunhofer IEE in Kassel researches for the national and international transformation of energy systems.



Business units

As an applied research institute, we research and develop solutions for the transformation of energy systems and offer a rich portfolio of services, know-how and products.





pandapower: Open-source-tool hits 500,000 downloads

pandapower is an easy-to-use tool for modelling, analyzing and optimizing power grids with a high degree of automation. It was developed at both the University of Kassel and the Fraunhofer IEE in Kassel. Thanks to its international use and integration into various processes, the software has already achieved 500,000 (partly automated) downloads since its release in 2016.  



Paving the way for large-scale production of green hydrogen energy carriers in Chile

Together with its partners, Fraunhofer IEE is paving the way for the establishment of large-scale production of green hydrogen and its downstream products in Chile. The project’s research focuses on the production potential of hydrogen and liquid fuels from solar energy. In addition to technical issues, researchers are investigating the economic, logistical, and socio-economic aspects of scaling up, through which they will also support the installation of a pilot plant.



Digitalization as the Enabler for High Performance District Heating Systems

Digital technologies are expected to improve the efficiency and system integration of additional renewable sources, as well as making the entire energy system reliable, smarter, and more efficient. Future digital applications may allow district energy systems to fully optimize the operation of their plant and network assets while realizing immediate and feasible decarbonization of urban heat supply: With data to optimize district heating systems and new business opportunities.



Photovoltaic Converters: Reducing Size, Weight and Cost

Within the Research Project “PV-MoVe”, Researchers at the Fraunhofer IEE investigated how to use active switching loss reduction networks for power semiconductors to enable smaller, more lightweight, and more cost-efficient photovoltaic converters.



High efficiency in DC-DC converters based on silicon carbide semiconductor

The aim of the MUSiCel research project is therefore to research and test innovative components and methods for an efficient, locally emission-free energy supply for agricultural and construction machinery. At the heart of the supply system is a mobile and compact high-performance DC-DC converter that is integrated into the vehicle.



UrbanGroundHeat develops guidelines to
advance geothermal heat supply in urban neighborhoods

It is warm underground. Accessing this energy source on a large scale to heat houses and apartments is the task of the new UrbanGroundHeat research project. Geothermal energy is  CO2-free and can be easily tapped in many places in Germany, but has not yet been widely developed for legal and economic reasons. As a result of the energy crisis, conditions have changed. A cooperation of research and industry under the leadership of the Fraunhofer Institute for Energy Economics and Energy System Technology IEE now intends to facilitate the use of geothermal energy for municipal utilities, cities and communities.



English and Spanish versions of the PtX Atlas published for international use

The map shows the global potential for power-to-X technologies in coastal and inland sites in countries outside the European Economic Area. Now the interactive tool has been published in an English and Spanish version for international use.




In favour of cosmopolitanism, diversity, democracy, and the rule of law

Research at Fraunhofer-Gesellschaft would be inconceivable without its employees, including those with migration backgrounds - they are the foundation of our scientific system. Internationality, diversity, and respect are integral components of the Fraunhofer mission statement and the Fraunhofer Code of Conduct.

Current events and trade fairs


Online-Summer School/ 17.06. - 21.06.2024

Summer School

Learn to use pandapower for your power system modelling, analysis and grid planning - with excellent guidance and through independent learning.

 17.06. - 21.06.2024 | online


Workshop/ 19 - 20th June 2024

Power Hardware In-The-Loop Meets Grid-Forming Control

Learn how  rapid control prototyping systems (RCP), together with power hardware-in-the-loop systems (PHIL) enable an easy entry into the laboratory validation of power converter-based applications.

19 - 20th June 2024 | Kassel, Germany


Company fair for computer science / electrical engineering

Get to know us!

Establish valuable connections and find out why we are the perfect employer in the fields of computer science / electrical engineering for you!

25.06.2024 | 12:00 - 17:00 | University of Kassel Entrance Hall C, Wilhelmshöher Allee 73, Kassel


28.06. | 13:00-18:00

Open Day

We look forward to seeing you and your interest in our institute.


28.06. | 13:00-18:00 | Fraunhofer IEE


Summit / 21.08 - 23.08.2024

PELSS Power Electronics Student Summit

The Power Electronics Student Summit is a specialist conference in the field of power electronics - organized by Hochschule Bonn-Rhein-Sieg (H-BRS) in cooperation with the Fraunhofer IEE. The conference enables students to gain initial experience in the preparation, publication and discussion of their own research work in front of a specialist audience.

 21.08 - 23.08.2024 | Kassel



Call for Abstracts | Conference of the German AI Service Centers

This year’s focus is on AI in healthcare and the energy sector. The conference is aimed at researchers and interested parties from science and industry, especially from small and medium-sized enterprises with a need for computing power and AI expertise.

18.-19.09.2024 | Göttingen, Alte Mensa

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Social Media

Fraunhofer IEE in Social Media

The YouTube format "" publishes high-quality journalistic films in a cooperation project of Fraunhofer IEE, the non-profit project company m4future and Jörg Moll Filmproduktion.