Potential value and technical gaps of CSP/T-assisted high temperature electrolysis

Abstract

High-temperature steam electrolysis assisted by concentrated solar power/thermal (CSP/T) could be a promising option to produce sustainable hydrogen by supplying both heat and electricity with a low-cost storage option to increase the capacity factor. At the elevated temperature (>800°C) required for electrolysis, CSP/T technology using fine-grained particles as the heat transfer fluid and storage medium is a prospective option to supply dispatchable energy demand to the high-temperature electrolysis process.