Fraunhofer IEE successfully cooperates with numerous public and industrial research institutes on a national and international level. The proximity to application is documented, among other things, in many projects with industrial participation and direct orders from companies.


Fraunhofer IEE cooperates intensively with various universities, in particular the universities in Kassel, Hannover, Darmstadt and Hochschule Hannover and Bonn-Rhein-Sieg.


Within the Fraunhofer-Gesellschaft, complementary competencies and experience of the partner institutes are integrated in particular via the Fraunhofer Groups "Energy Technologies and Climate Protection", "Materials, Components - Materials" and "IUK Technology" as well as the Fraunhofer Alliances "Energy" and "Battery" and the Fraunhofer Cluster of Excellence "Integrated Energy Systems CINES".


The Hessian Biogas Research Center HBFZ in Bad Hersfeld is operated by Fraunhofer IEE together with the Landesbetrieb Landwirtschaft Hessen LLH and the Landesbetrieb Hessisches Landeslabor LHL. Fraunhofer IEE is a board member of the House of Energy HoE of the State of Hesse. The HoE networks the major Hessian energy suppliers, companies from the service and production sectors, universities, colleges and research institutions as well as two Hessian ministries. In addition, the institute participates in the cluster networks deENet - Kompetenznetzwerk dezentrale Energietechnologien e.V. and - Netzwerk für die nordhessische Mobilitätswirtschaft.


Together with other non-university German research institutes, Fraunhofer IEE has joined forces in the Research Association for Renewable Energies FVEE.


On the initiative of Fraunhofer IEE, the leading European laboratories and research institutes in the field of decentralized energy sources have founded the DERlab network. Fraunhofer IEE is a member of the European Energy Research Alliance EERA, the association of European public research centers and universities.


Research results are incorporated into standardization and norming through the participation of numerous scientists from the institute in national and international bodies such as DKE, CENELEC and IEC. As an expert advisor, Fraunhofer IEE also contributes its know-how to political, legal and economic frameworks.