Proxima Fusion

Proxima Fusion builds stellarator fusion power plants and the industrial platform to deliver them.

Climate and energy Manufacturing and industrial

Latest funding

$468M Series B+ · July 7, 2026

Led by East X Ventures · Source: fundraisingfox.com

Total raised: $662.8M across 5 sourced rounds

All 5 rounds ↓

Website: proximafusion.com.

X: @proximafusion · 1,988 followers.

LinkedIn: proximafusion.

Categories: Climate and energy Manufacturing and industrial.

Sectors: Clean Energy, Energy, Nuclear, Power Grid.

Stage: Series B+.

Based in: Munich, Germany.

Founded: 2023.

Total raised: $662.8M in 5 sourced rounds.

Last round: Jul 7, 2026 · 131 days ago.

Headcount: 101–250 employees.

On Recent Funding since: Sep 29, 2026.

Signals

X account@proximafusion · created Mar 22, 2023 (3 years old) · 1,988 followers

Website registeredNov 2, 2022 (4 years old)

About Proxima Fusion

It develops stellarator technologies as integrated systems. Proxima Fusion works with research institutions, industrial partners, and energy companies through the Alpha Alliance.

TIMELINE · MONEY RAISED

Proxima Fusion | 209 days from website to first raise on record

@proximafusion·Raised $663M in 5 sourced rounds·2 signals before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

Date	Round	Amount	Lead	Source
Jul 7, 2026	Series B+	$468M	EEast X Ventures	fundraisingfox.com
Sep 9, 2025	Series A	$17.6M	—	techfundingnews.com
Jun 10, 2025	Series A	$148M	BBalderton Capital	techcrunch.com
Apr 10, 2024	Seed	$21.7M	Rredalpine	tech.eu
May 30, 2023	Pre Seed	$7.5M	PPlural	pulse2.com

Timeline

March 22, 2023
X account created
November 2, 2022
Website created

Founders and team

FS
Francesco Sciortino Co-Founder and CEO

LinkedIn · source: proximafusion.com
JL
Jorrit Lion Founder

LinkedIn
LM
Lucio Milanese Co-Founder and Chief External Affairs Officer

@luciomilanese · LinkedIn · source: proximafusion.com
MK
Martin Kubie Founder

LinkedIn
BD
Barrington D'Arcy Chief Manufacturing Officer
SG
Sergei Galperin Chief Financial Officer

Investors

Companies like Proxima Fusion

TThea Energy$100M Series B+ · May 2026
TType One Energy$200M Series B+ · Oct 2026
CCellaresSeries B+ · Jul 2026
SStarlight EngineSeed · Oct 2026
VVoltus$225M Series B+ · Oct 2026
RRenaissance Fusion$37.62M Series A · Mar 2025

Other companies backed by East X Ventures

SStandardX$13.28M Seed · Sep 2026
AAstut$2.13M Seed · Oct 2025

East X Ventures portfolio →

Sources and API

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/proxima-fusion (get a free API key).