Spiral Hydrogen is developing a rotating, bubble-free electrolyser designed to improve the efficiency of green hydrogen production.
Spiral Hydrogen has raised €3.4M across 1 funding round from 3 investors, most recently a Pre-Seed round in Apr 2026. Based in Tartu, Estonia; active in Deeptech. Data as of 7 Aug 2026.
Timing: too soon vs cohort gap · momentum unknown. Funding-only estimates, not predictions and not investment advice — see signals.
| Date | Stage | Amount | Investors | |
|---|---|---|---|---|
| 2026-04-30 | Pre-Seed |
| €3.4M |
| byFounders,Norrsken Evolve,Superangel |
| View deal → |
