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Proxima Fusion

EnergySeries B

Stellarator fusion for affordable, reliable clean energy

2Rounds
0Articles
General InformationProxima Fusion is a German nuclear fusion startup founded in 2021 with 51-200 employees, focused on developing stellarator fusion reactors for commercial power generation.
Funding & FinancialsThe company has raised approximately €50 million+ across multiple rounds, with Series B funding secured to advance its Stellarator technology toward demonstration plants.
Leadership & TeamFounded by Dr. Dirk Sauer and a team of fusion physics experts from Max Planck Institute and European fusion research centers, bringing deep stellarator expertise to commercial development.
Recent ActivityProxima Fusion is actively constructing its Proxima Fusion 1 (PF1) demonstration reactor and has secured partnerships with industrial suppliers and research institutions to validate stellarator commercial viability.

Highlights

Total Raised
2 rounds
Latest Round
$468
Jul 23, 2026
Stage
Series B
energy
Employees
51-200
Founded 2021
Headquarters
News Coverage
Talent Signals
SEC Filings

Backers

and others
Balderton
Bayern Kapital
Brevan Howard Macro Venture
Burda Principal Investments
CDP Venture Capital
Cherry Ventures
DST Global Partners
DTCF
East X Ventures
EIC Fund
Elaia
Google
KfW Capital
Leitmotif
Lightspeed
Plural
redalpine
RWE
SPRIND
UVC Partners
XTX Ventures

Funding History

$468
2026
Series (growth stage)
$468
2026
Series A
SEC Form D   Editorial
Jul 23, 2026
$468 millionSeries A · Editorial

Investors: XTX Ventures, East X Ventures, Google, RWE, KfW Capital, SPRIND, Burda Principal Investments, Plural, UVC Partners, Balderton, Cherry Ventures, DST Global Partners, Brevan Howard Macro Venture, Lightspeed, DTCF, redalpine, Leitmotif, Elaia, CDP Venture Capital, Bayern Kapital, EIC Fund

Proxima Fusion develops stellarator fusion reactors to commercialize Europe's first commercial fusion power plant, raising €411 million ($468 million) in Series A funding.

Jul 9, 2026
$468 millionSeries (growth stage) · Editorial

Investors: XTX Ventures, East X Ventures, RWE, Google, KfW Capital, SPRIND, and others

German-based fusion energy company developing stellarator reactors raised €411 million ($468 million) to commercialize fusion technology and build European fusion champion.

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