Hephaestus
Hephaestus is a provider of high temperature superconducting (HTS) magnets and negative triangularity fusion energy technology.
Hephaestus has raised €15M across 1 funding round from 5 investors, most recently a round in Oct 2026. Based in London, UK; active in Energy. Data as of 28 Oct 2026.
London, UKwww.hephaestus.energy ↗
Total raised
€15M
€15,310,664
Funding rounds
1
Investors
5
distinct backers
Active since
2026-10
latest 2026-10
Funding by year
EUR raised per year · 2026 YTDHephaestus — funding by year — interactive chart.
Data table
| Hephaestus — funding by year | |
|---|---|
| 2026 | €15M |
Signals
High confidenceRaise-next likelihood10
base rate 30% for Other
- ▼ Raised very recently
- ▼ Low backer re-investment
Timing: too soon vs cohort gap · momentum unknown. Funding-only estimates, not predictions and not investment advice — see signals.
Funding rounds
1 round| Date | Stage | Amount | Investors | |
|---|---|---|---|---|
| 2026-10-21 | Other | €15M | CiRi Ventures,Climate Capital,Prescience Ventures,TeamPact Ventures,Unruly Capital | View deal → |