Photo-electrochemical hydrogen generation: Scaling and commercialization
Sophia Haussener a
a Laboratory of Renewable Energy Science and Engineering, EPFL, Station 9, Lausanne 1015, Switzerland
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Fall 2024 Conference (MATSUSFall24)
#SOLTEC - Solar Technologies for Renewable Fuels and Chemicals: On the Way to Industrial Implementation
Lausanne, Switzerland, 2024 November 12th - 15th
Organizers: Víctor A. de la Peña O'Shea and Miguel García-Tecedor
Invited Speaker, Sophia Haussener, presentation 332
DOI: https://doi.org/10.29363/nanoge.matsusfall.2024.332
Publication date: 28th August 2024

Solar hydrogen generation systems’ path towards commercialization relies on their competitiveness in terms of performance, longevity, cost and sustainability. Utilizing solar irradiation concentration and thermal management are two features that can lead to a competitive system [1,2]. I will discuss our journey from our laboratory scale demonstration (output power in the range of 10 W) under controlled irradiation conditions to our demonstrator scale (output power in the range of 1 kW) under realistic solar irradiation conditions [3], and the planned industrial demonstrator (targeted output power in the range of 100 kW). I will provide data that shows and quantifies the operational stability of the system. I will discuss operational strategies that increase the competitiveness and capacity factor of the system, including strategies for 24h operation of the system or for constant hydrogen production rates. I will end with an outlook on how such systems can be further scaled to the MW scale, how they can be integrated in the current energy landscape, and how they can be extended to incorporate C-based inputs to contribute to the production of sustainable liquid fuels.

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