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Published December 15, 2022 | Version v1
Journal article Open

The H2020 project REFLECT - Redefining fluid properties at extreme conditions to optimise future geothermal energy extraction

  • 1. Helmholtz-Centre Potsdam German Research Centre for Geosciences (GFZ), Telegrafenberg, 14473 Potsdam, Germany
  • 2. Bureau de recherches geologiques et minières (BRGM), 3, avenue Claude-Guillemin, BP 36009, 45060 Orléans Cedex 02, France
  • 3. Technische Universiteit Delft, Stevinweg 1, 2628 CN Delft, the Netherlands
  • 4. Íslenskar orkurannsóknir (ÍSOR), Urðarhvarfi 8, 203 Kópavogur, Iceland
  • 5. Izmir Institute of Technology (IZTECH), Gulbahce, 35430 Urla, İzmir, Turkey
  • 6. Hydroisotop GmbH (HI), Woelkestraße 9, 85301 Schweitenkirchen, Germany
  • 7. Université de Neuchatel (UNINE), Faubourg de l'hopital 41, Neuchatel 2000, Switzerland
  • 8. British Geological Survey (BGS/UKRI), Keyworth, Nottingham, NG12 5GG, United Kingdom
  • 9. Miskolci Egyetem (UNIM), H-3515 Miskolc-Egyetemváros, Hungary
  • 10. Natürlich Insheim GmbH (NI), Amalienbadstraße 41, Bau 52, 76227 Karlsruhe, Germany
  • 11. Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek (TNO), Anna van Buerenplein 1, 2595 DA The Hague, Netherlands
  • 12. European Federation of Geologists
  • 13. Landsvirkjun (LVK), Háaleitisbraut 68, 105 Reykjavík, Iceland
  • 14. Institutt for Energiteknikk (IFE), Instituttveien 18, 2007 Kjeller, Norway


The efficiency and feasibility of geothermal utilisation depends strongly on the characteristics and behaviour of the fluids that transfer heat between the geosphere and the engineered components of a power plant. Chemical and physical processes such as precipitation, corrosion, or degassing are induced by pressure and temperature changes, with potentially serious consequences for power plant operation and project economics. The EU Horizon 2020-funded project REFLECT aims to avoid such problems by collecting high-quality chemical, physical, and microbiological data at extreme salinities, pressures or temperatures and improving the understanding of kinetic processes through laboratory experiments. These data are presented in a European geothermal fluid atlas and implemented in predictive models in order to provide recommendations on how to best operate geothermal systems for a sustainable future.



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REFLECT – Redefining geothermal fluid properties at extreme conditions to optimize future geothermal energy extraction 850626
European Commission