A New Category of Water Electrolysis Goes Mainstream: H2Pro’s Technology Featured in Nature Review of Decoupled Green Hydrogen Production
Nature Reviews Clean Technology spotlights Decoupled Water Electrolysis (DWE) – a novel approach to green hydrogen production pioneered by H2Pro that solves the issue of direct connection to solar and wind
Caesarea, Israel, May 13, 2025 — For decades, water electrolysis has remained stagnant, relying on conventional technologies like Alkaline and PEM, where ongoing development yields only incremental gains in overcoming the barriers to affordable green hydrogen production. Now, a new category is gaining global recognition: Decoupled Water Electrolysis (DWE) – an approach that aims to solve these problems with fresh thinking. At the center of its emergence is Israeli climate tech company H2Pro, whose bold reimagining of electrolysis is featured in a landmark review published in Nature Reviews Clean Technology.
The article identifies a critical challenge facing conventional electrolyzers: they struggle to operate safely and efficiently under the fluctuating conditions of solar and wind power. Membranes, gas crossover safety risks, and operational difficulties limit the ability of current technologies to respond dynamically to intermittent renewable energy – a barrier that drives up costs and restricts deployment.
H2Pro’s DWE technology is designed from the ground up to address this issue. By splitting hydrogen and oxygen production into two distinct steps, mediated by a proprietary redox cycle, DWE enables safe, hyper-flexible, and membrane-free hydrogen generation, even at partial loads. This makes it ideally suited for direct connection to renewable energy sources.
Rotem Arad, CBO of H2Pro and contributor to the Nature article, said:
To unlock the full value of cheap renewable electricity, we need electrolysis that can go behind the meter and be fit for green – hyper-flexible, ultra-low cost, seamless on/off, and high efficiency across a wide range of power loads,
“That’s exactly what H2Pro’s DWE enables.”
The review article was co-authored by a distinguished group of researchers: Prof. Avner Rothschild and Dr. Guilin Ruan (Technion – Israel Institute of Technology), Dr. Fiona Todman and Prof. Mark D. Symes (University of Glasgow), Dr. Tom Smolinka (Fraunhofer Institute for Solar Energy Systems), and Prof. Jens Oluf Jensen (Technical University of Denmark), Gilad Yogev and Rotem Arad (H2Pro). Together, they examine the chemistry, system architectures, and real-world implications of decoupling hydrogen and oxygen production, while validating the growing scientific consensus that DWE could be key to scaling green hydrogen production cost-effectively.
Dr. Hen Dotan, CTO and founding member of H2Pro, said:
When we conducted the groundbreaking Technion research that became the foundation for H2Pro’s technology, we knew incremental improvements to incumbent electrolysis methods were not the answer,
“We let go of assumptions that were holding back electrolysis, like the false notion that hydrogen and oxygen must be produced simultaneously. In doing so, we pioneered not just a breakthrough technology and category, but a new way of thinking about electrolysis. We’re thrilled to see DWE gaining momentum and honored to be featured alongside the esteemed researchers now helping to push this field forward.”
Building on these advancements, H2Pro is now gearing up to deploy the world’s first decoupled electrolysis system in the field – a key milestone in translating scientific progress into scalable, commercial infrastructure. Scheduled for installation later this year in Tziporit, Israel, the project will also mark the country’s first green hydrogen production.
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A New Category of Water Electrolysis Goes Mainstream: H2Pro’s Technology Featured in Nature Review of Decoupled Green Hydrogen Production
