PROMETEO: Hydrogen PROduction by MEans of solar heat and power in high TEmperature Solid Oxide Electrolysers

PROMETEO aims at producing green hydrogen from renewable heat & power sources by high temperature electrolysis in areas of low electricity prices associated to photovoltaic or wind. Solid Oxide Electrolysis (SOE) is a highly efficient technology to convert heat & power into hydrogen from water usually validated in steady-state operation. However, the heat for the steam generation may not be available for the operation of the SOE when inexpensive power is offered (e.g. off-grid peak, photovoltaics or wind). Thus, the challenge is to optimize the coupling of the SOE with two intermittent sources: non-programmable renewable electricity and high-temperature solar heat from Concentrating Solar (CS) systems with Thermal Energy Storage (TES) to supply solar heat when power is made available.

In PROMETEO a fully integrated optimized system will be developed, where the SOE combined with the TES and ancillary components will efficiently convert intermittent heat & power sources to hydrogen. The design will satisfy different criteria: end-users’ needs, sustainability aspects, regulatory & safety concerns, scale-up and engineering issues.

The players of the value-chain will play key roles in the partnership created around the project: from developers and research organizations, to the electrolyzer supplier, system integrator/engineering and end-users. A fully-equipped modular prototype with at least 25 kWe SOE (about 15 kg/day hydrogen production) and TES (for 24 hours operation) will be designed, built, connected to representative external power/heat sources and validated in real context (TRL 5). Particular attention will be given to partial load operation, transients and hot stand-by periods.

Industrial end-users will lead to techno-economic & sustainability studies to apply the technology upscaled (up to 100 MW) in on-grid & off-grid scenarios for different end-uses: utility for grid balancing, power-to-gas, and hydrogen as feedstock for the fertilizer & chemical industry.

Participants: Agenzia Nazionale Per Le Nuove Tecnologie L’Energia e lo Sviluppo Economico Sostenibile (Coordinator) (ENEA), Capital Energy S.L (Capital Energy); Fondazione Bruno Kessler (FBK), Solidpower SA (SP), Fundacion IMDEA Energía (IMDEA Energy), SNAM S.P.A (Snam S.P. A)., Ecole Polytechnique Federale De Lausanne (EPFL), NextChem Srl. (NextChem), Stamicarbon B.V. (Stamicarbon).
Funding Institution/Program: This project has received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking (JU), under grant agreement No 101007194.This Joint Undertaking receives support from the European Union’s Horizon 2020 research and innovation programme, and Hydrogen Europe and Hydrogen Europe Research.
Call: H2020-JTI-FCH-2020-1 (Topic: FCH-02-2-2020 Highly efficient hydrogen production using solid oxide electrolysis integrated with renewable heat and power).
Type of Action: Research and Innovation Action (RIA)
Period: January 2021-June 2024
Principal Investigator: Dr. Manuel Romero