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Hephaestus Technologies: Funding, Investors & Team (Oct 2026)

AI enhanced nuclear fusion startup

hephtechnologies.com LinkedIn London, United Kingdom 11-50 employees Founded 2021
Total raised
$17.2M
Rounds
1
Latest
Undisclosed round
Oct 2026

Hephaestus Technologies has raised $17.2M across 1 funding round on record, the most recent an undisclosed round of $17.2M announced in Oct 2026.

That round is above the $4.1M median round size for United Kingdom companies tracked on FundedIQ over the last two years.

Hephaestus Technologies Company Profile and Key Stats

Total funding raised
$17.2M
across 1 round on record
Funding rounds on record
1
Latest funding round
Undisclosed round
$17.2M in Oct 2026
Employees
11-50
reported band
Founded
2021
Headquarters
London, United Kingdom
Investors on record
6
5 named below

Latest funding round on record: Oct 2026.

Hephaestus Technologies Funding Rounds

Date
Round
Amount
Undisclosed round
$17.2M

Hephaestus Technologies Investors

Unruly Capital Climate Capital Teampact ventures Ciri Ventures Climate Insiders

6 investors are recorded in total; the 5 named above are those the record identifies.

Hephaestus Technologies Founders and Leadership Team

Name
Role
Contact
Andrew Malcolm-Neale
Co-Founder & VP Fusion Engineering
Locked
Jay Barrymore
COO
Locked

Contact details for the Hephaestus Technologies team: 2 of 2 have an email address on file, 2 have a LinkedIn profile.

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Hephaestus Technologies Funding in Context

Segment
Companies
Median round
5,376
$4.1M

Hephaestus Technologies' latest round of $17.2M is above the median round in United Kingdom. Medians cover the last 24 months of disclosed rounds.

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Hephaestus Technologies Funding FAQs

What does Hephaestus Technologies do?

AI enhanced nuclear fusion startup

How much funding has Hephaestus Technologies raised?

Hephaestus Technologies has raised $17.2M across 1 round on record. The most recent is an undisclosed round of $17.2M announced in Oct 2026.

When did Hephaestus Technologies last raise funding?

Hephaestus Technologies' most recent funding round on record is an undisclosed round of $17.2M, announced in Oct 2026.

Who has invested in Hephaestus Technologies?

Investors on record for Hephaestus Technologies include Unruly Capital, Climate Capital, Teampact ventures, Ciri Ventures, Climate Insiders. FundedIQ records 6 investors in total.

Who founded Hephaestus Technologies?

FundedIQ lists Andrew Malcolm-Neale (Co-Founder & VP Fusion Engineering) at Hephaestus Technologies.

Where is Hephaestus Technologies headquartered?

Hephaestus Technologies is based in London, United Kingdom.

How many employees does Hephaestus Technologies have?

Hephaestus Technologies is in the 11-50 employee band.

When was Hephaestus Technologies founded?

Hephaestus Technologies was founded in 2021.

About FundedIQ's Hephaestus Technologies Funding Data

FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.

Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Hephaestus Technologies is left off this page rather than filled in.

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