HYDROSOL (short for Solar hydrogen via water splitting in advanced monolithic reactors for future solar power plants ) is a series of European Union funded projects for the promotion of renewable energy . Its aim is the generation of hydrogen using Concentrated solar power with a specific thermochemical cycle .


The Fifth Framework Program for Research and Technological Development (FP5) HYDROSOL project started in December 2002 with a budget of € 2.6 million. A pilot-scale solar reactor was designed, [1] built and operated at the German Aerospace Center [2] with a solar furnace facility in Cologne (Germany), “continuously producing” solar hydrogen. [3]

The FP6 HYDROSOL II is a pilot reactor of 100 kW scale for solar thermochemical hydrogen production at the Solar Plataforma of Almería in Spain , which started in November 2005 and has been in operation since 2008. [4] [5]

The FP7 HYDROSOL-3D project, [6] started on January 1, 2010 and ran until January 1, 2013. [7] The Hydrosol series was conceived and coordinated by the Aerosol and Particle Technology Laboratory of the Center for Research and Technology- Hellas and Ciemat . In 2006, the Hydrosol project was awarded the Descartes Prize by the European Commission for Collaborative Scientific Research. [8]

In early 2017, the Synlight project at the German Aerospace Center (DLR) was created in the sun. [9] [10] [11] In an effort to better optimize solar hydrogen production at scale, the electrically powered ‘sun’ is able to provide focussed temperatures approaching 3,000 ° C .

See also

  • Cerium (IV) oxide-cerium (III) oxide cycle
  • Water splitting


  1. Jump up^ Kostoglou, M .; Lekkos, CP; Konstandopoulos, AG (2011). “On mathematical modeling of solar hydrogen production in monolithic reactors”. Computers & Chemical Engineering . 35 (9): 1915. doi : 10.1016 / j.compchemeng.2011.03.019 .
  2. Jump up^ “Solar Energy for Chemical Processes” . Institute of Solar Research.
  3. Jump up^ Pregger, Thomas; Graf, Daniela; Krewitt, Wolfram; Sattler, Christian; Roeb, Martin; Möller, Stephan (2009). “Prospects of solar thermal hydrogen production processes”. International Journal of Hydrogen Energy . 34 (10): 4256. doi : 10.1016 / j.ijhydene.2009.03.025 .
  4. Jump up^ “European Commission: CORDIS: Projects and Results: Solar Hydrogen via Water Splitting in Advanced Monolithic Reactors for Future Solar Power Plants” . europa.eu .
  5. Jump up^ “DLR Portal – DLR” . dlr.de .
  6. Jump up^ Hydrosol-3D, 3rd Generation Design Study 2010
  7. Jump up^ Hydrosol-3D Scale-up of thermochemical hydrogen generation in a monolithic solar reactor
  8. Jump up^ Descartes Prize for Research
  9. Jump up^ “World’s largest artificial Sun rises in Germany” .
  10. Jump up^ Devlin, Hannah (23 March 2017). “Let there be light: Germans switch on ‘largest artificial sun ‘ ” – via The Guardian.
  11. Jump up^ “Hydrogen Production: Thermochemical Water Splitting” . Department of Energy.

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