H2-24/7

Design and development of a system for electricity and steam production using thermal storage for green hydrogen generation through electrolysis
The H2-24/7 project aims to produce green hydrogen continuously using solid oxide electrolysis (SOEL) powered by renewable heat and electricity sources. To address energy intermittency and limited heat availability, it integrates SOEL with thermal energy storage (TES) systems based on molten salts, enabling efficient hydrogen production by leveraging renewable energy for steam generation and electricity supply, even in the absence of solar or wind energy. A modular 100 kWe prototype, capable of producing 60 kg of hydrogen daily, will be developed and validated. This design will consider sustainability, scalability, safety, and end-user requirements to ensure practical and efficient implementation.
RPOW’s tasks within the consortium:
- Research into materials and components (salt mixtures, electric heaters)
- Design and engineering of molten salts TES and integration with the SOEL
- Validation of the technology at pilot scale



H2-24/7 project has been funded by the European Union (NextGenerationEU) and the Instituto para la diversificación y ahorro de la Energía (IDEA), under the code PR-H2CVAL4-C2-2023-000047.