- PFALZWERKE AKTIENGESELLSCHAFT, Germany
- Pfalzwerke geofuture GmbH, Germany
- geo x GmbH, Germany
- G.E.I.E. Exploitation Minière de la Chaleur, France
- Green Rock Energy Ltd, Australia
- MILTECH UK Ltd, England
- EGS Energy Ltd, England
- Stadtwerke Dresden GmbH, Germany
- Stadtwerke Viernheim GmbH, Germany
- Dornier Consulting GmbH, Germany / Abu Dhabi
- Petratherm Ltd, Australia
- CEGE - Central European Geothermal Energy Generating Zrt., Hungary
- Energieried GmbH & Co. KG, Germany
- GGEW Bergstraße AG, Germany
- rubitec GmbH, Germany
- Hahn Gemüsebau GmbH, Germany
- NEXGEO Inc, Korea
- ÉCOGI, France
- Tuttlinger Bäder GmbH, Germany
- CDM Smith Consult GmbH, Germany
- AXPO Services AG, Switzerland
- Midia Investment s. r. o., Slovak Republic
- Geo-Energie Suisse AG, Switzerland
- RUB Ruhr-Universität Bochum, Germany
- KICT Korea Institute of Construction Technology, Korea
- SNU Seoul National University, Korea
- TuTech Innovation GmbH, Germany
- Handke International GmbH, Deutschland
- Millenium Geo-Venture SAS, France
- EnBW Energie Baden-Württemberg AG, Germany
- Électricité de Strasbourg, France
- ITT Corp., USA
- Baltalimani Enerji Yatirimlari Üretim VE Ticaret A.Ş., Turkey
- Frost Consulting, USA
- MODULE 3, France
- Pfalzsolar GmbH, Germany
- KIGAM Korea Institute of Geoscience and Mineral Resources, Korea
- Enesol Géothermie, France
- Geothermal Engineering Ltd, England
Energy is what drives us naturally
