Estonian-Dutch deeptech startup Spiral Hydrogen has secured €2.7 million in pre-seed funding, complemented by €0.7 million in grant financing, to advance a new approach to hydrogen production.
The round includes backing from byFounders, Norrsken Evolve, and Superangel.
Eliminating A Core Inefficiency In Electrolysis
Founded by Juri Volodin and Fedor Stomakhin, Spiral Hydrogen is tackling one of the most persistent inefficiencies in hydrogen production: gas bubble formation during electrolysis.
In conventional systems, bubbles build up on electrode surfaces, limiting performance and increasing energy consumption. Spiral Hydrogen’s solution removes this bottleneck by separating gas generation from the electrode via a porous structure, combined with a rotating system that improves flow dynamics.
The result is a design targeting efficiency levels above 90%, with the potential to significantly reduce the cost of producing green hydrogen.
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Moving Toward Real-World Deployment
The newly raised capital will support the transition from lab development to industrial validation.
The company plans to install its first pilot system at the Port of Rotterdam, working alongside SwitcH2. The pilot project will test the system under real operating conditions and provide the foundation for commercial-scale deployment.
Enabling Cost-Competitive Green Hydrogen
Spiral Hydrogen’s long-term ambition is to make green hydrogen economically viable at scale—closing the gap with fossil-based alternatives.
By improving efficiency and simplifying system design, the company aims to unlock broader adoption across industries such as steel, chemicals, fertilisers, and heavy transport, where decarbonisation remains challenging.
“We’re addressing a fundamental limitation in current systems,” said Volodin. “By rethinking how electrolysis works at the core level, we can unlock a new level of efficiency and move closer to making green hydrogen commercially competitive.”
About Spiral Hydrogen
Spiral Hydrogen is a next-generation energy startup developing advanced electrolysis systems for green hydrogen production. Its technology focuses on eliminating inefficiencies in traditional designs, enabling higher performance, lower costs, and scalable deployment for industrial use.
