- dataTec AG
- DLR - German Aerospace Center - Institute of Engineering Thermodynamics, Germany
- DiLiCo engineering GmbH
- E+E Elektronik Ges.m.b.H
- ebm-papst Mulfingen GmbH & Co. KG
- EE energy engineers GmbH
- EKPO Fuel Cell Technologies GmbH
- EKTechnologies GmbH, Germany
- e-mobil BW State Agency for New Mobility Solutions and Automotive Baden-Württemberg , Germany
- EP Ehrler Prüftechnik Engineering GmbH, Germany
- FEV Europe GmbH
- FEV Software and Testing Solutions GmbH
- FISCHER Fuel Cell Compressor AG, Switzerland
- Forschung Baden-Württemberg (ZSW)
- Fraunhofer Institut für Chemische
- Fraunhofer-Institut für Betriebsfestigkeit
- Freudenberg FST GmbH