Electrolysis of steam rather than liquid water has a much higher efficiency, practically up to 85%, in theory even higher than 100%. Energetically it makes sense to do this if steam is available from an industrial processes, or alernatively from a CSP-plant. In Rotterdam in the Netherlands, a consortium of European organisations is busy building a 2.6 MW plant to electrolyze steam or ca. 65 kg hydrogen/hour. Later they hope to scale that up to 100 MW. The initial project will run until 2024, that is 16,000 operating hours and 960 ton hydrogen produced.
The project involves Neste, worlds’s leading provider of renewable diesel and renewable jet fuel, and as key technology partners the French research organisation CEA, plant builder Paul Wurth, the energy utility ENGIE and the cleantech company Sunfire. The consortium will install, integrate and operate the world’s first high-temperature electrolyser (HTE) system in multi-megawatt-scale. The project consortium led by CEA, as project coordinator, is part of the EU Horizon 2020 FCH2-JU program with an overall funding of EUR 6.9 million.
A group of companies led by French public research organisation CEA plans to install a 2.6-MW high-temperature electrolyser (HTE) to produce green hydrogen in Rotterdam. The capacity could at a later stage be expanded up to 100 MW, according to the announcement on Wednesday.
The project is being developed at Neste’s renewable products refinery in Rotterdam. It will demonstrate the integration of HTE in an industrial refining process. The system will be able to make 60 kg of green hydrogen per hour reaching an electrical efficiency of up to 85% AC to LHV H2.
[sunfire.de] – MULTIPLHY – Green hydrogen for renewable products refinery
[renewablesnow.com] – Neste to host green hydrogen production
[ec.europa.eu] – What is Horizon 2020?
[wikipedia.org] – Horizon Europe
[spglobal.com] – Consortium launches 2.6 MW Rotterdam green hydrogen project
[green-industrial-hydrogen.com] – GrlnHy-2.0 project site (Green Industrial Hydrogen via Steam Electrolysis)
[solarserver.de] – Grüner Wasserstoff für Raffinerie in Rotterdam
Sunfire steam-to-hydrogen electrolyser in a steel factory in Salzgitter, Germany. Capacity 150 kW or 40 Nm3 (40 m3 at 1 bar and 0 C) per hour, with an electrolysis efficiency of more than 80%. In the fuel cell mode, the module in reverse can generate 30 kW.