How much has Hephaestus Technologies raised?

Hephaestus Technologies has raised $17.2M in one sourced round on record, announced October 21, 2026.

Where is Hephaestus Technologies based?

Hephaestus Technologies is based in London, United Kingdom.

Hephaestus Technologies

AI enhanced nuclear fusion startup

Climate and energy

Latest funding

$17.2M · October 21, 2026

Led by Ciri Ventures · Source: lnkd.in

Funding history ↓

Website: hephtechnologies.com.

LinkedIn: linkedin.com.

Category: Climate and energy.

Sectors: Artificial Intelligence (AI), Generative AI, Information Technology, Renewable Energy.

Based in: London, United Kingdom.

Last round: Oct 21, 2026 · 2 days ago.

Domain age: 7 years.

On Recent Funding since: Oct 23, 2026.

About Hephaestus Technologies

Hephaestus Technologies is a company based in London, United Kingdom. Recent Funding lists it under Climate and energy. It raised $17.2M in a funding round in October 2026, led by Ciri Ventures, according to lnkd.in. Investors on record include Climate Capital, Climate Insiders, Prescience Ventures, Teampact ventures and 1 other.

Funding rounds

October 21, 2026
Round · $17.2M
CCiri Ventures (lead), CClimate Capital, PPrescience Ventures, TTeampact ventures, UUnruly Capital
Source: lnkd.in
September 22, 2019
Website created

Investors

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Questions and sources

Hephaestus Technologies: questions and answers

How much has Hephaestus Technologies raised?: Hephaestus Technologies has raised $17.2M in one sourced round on record, announced October 21, 2026.
Who invested in Hephaestus Technologies?: Investors on record for Hephaestus Technologies: Ciri Ventures, Climate Capital, Climate Insiders, Prescience Ventures, Teampact ventures and Unruly Capital. Ciri Ventures led its latest sourced round.
Where is Hephaestus Technologies based?: Hephaestus Technologies is based in London, United Kingdom.

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/hephaestus-technologies (get a free API key).