Spiral Hydrogen Raises €3.4M to Build Green Hydrogen Pilot in Rotterdam

Why It Matters

By tackling the persistent bubble‑loss inefficiency, Spiral’s electrolyser could slash hydrogen production costs, making renewable hydrogen a realistic alternative to fossil‑based fuels and speeding industry‑wide decarbonisation.

Key Takeaways

• Spiral Hydrogen raised €3.4M ($3.7M) pre‑seed and grants
• New rotating electrolyser eliminates bubble losses, >90% efficiency
• Pilot electrolyser slated for Port of Rotterdam within two years
• Technology targets lower capex and opex for green hydrogen
• Aims to make hydrogen competitive for steel, fertiliser, transport

Pulse Analysis

Green hydrogen has long been touted as a cornerstone of the global energy transition, yet its commercial rollout stalls under high production costs. A primary inefficiency stems from gas bubbles forming on electrode surfaces during electrolysis, which dissipate energy and limit conversion rates. Spiral Hydrogen’s rotating, bubble‑free electrolyser re‑engineers this process by channeling gases through a porous electrode into a dedicated flow path, pushing efficiency past the 90% threshold. This breakthrough not only improves energy utilization but also reduces the size and complexity of the system, laying groundwork for more compact, modular plants.

The €3.4 million financing round, led by byFounders, Norrsken Evolve and Superangel, underscores growing investor confidence in next‑generation hydrogen technologies. Coupled with €0.7 million in public grants, the capital enables Spiral to move from lab‑scale prototypes to a full‑scale pilot at the Port of Rotterdam—a logistics hub already experimenting with low‑carbon fuels. Partnering with SwitcH2, the pilot will operate under real‑world industrial conditions, providing critical data on durability, maintenance and integration with existing energy infrastructure. Successful validation could accelerate the timeline for a commercial unit, positioning the company as a key supplier for European decarbonisation projects.

If Spiral’s claims hold, the cost curve for green hydrogen could shift dramatically, narrowing the gap with natural‑gas‑derived hydrogen. Lower capex and opex would make renewable hydrogen attractive for energy‑intensive sectors such as steelmaking, ammonia production, and heavy‑duty transport, where carbon‑intensity penalties are tightening. Moreover, the modular nature of the technology could enable rapid deployment in ports, refineries and industrial clusters, fostering localized clean‑fuel ecosystems. As policy frameworks increasingly reward low‑carbon inputs, investors and corporates are likely to prioritize technologies that deliver both efficiency and scalability—criteria that Spiral Hydrogen’s approach directly addresses.