Spiral Hydrogen
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 28 Oct 2026.
Tartu, Estoniaspiralhydrogen.com ↗
Total raised
€3.4M
€3,400,000
Funding rounds
1
Investors
3
distinct backers
Active since
2026-04
latest 2026-04
Funding by year
EUR raised per year · 2026 YTDSpiral Hydrogen — funding by year — interactive chart.
Data table
| Spiral Hydrogen — funding by year | |
|---|---|
| 2026 | €3.4M |
Signals
High confidenceRaise-next likelihood21
base rate 24% for Pre-Seed
- ▼ In typical raise window
- ▼ Low backer re-investment
Timing: in window vs cohort gap · momentum unknown. Funding-only estimates, not predictions and not investment advice — see signals.
Funding rounds
1 round| Date | Stage | Amount | Investors | |
|---|---|---|---|---|
| 2026-04-30 | Pre-Seed | €3.4M | byFounders,Norrsken Evolve,Superangel | View deal → |