Proxima Fusion Valuation, Funding & Investors

Proxima Fusion is valued at $2.7B as of July 2026.

Last Proxima Fusion valuation

$2.7B

Series B · Jul 2026

Last Proxima Fusion funding round

$468M

Series B · Jul 2026

Cumulative funding Proxima Fusion raised

$684M

across 7 funding rounds

Key investors in Proxima Fusion

  • UVC Partners
  • HTGF
  • Balderton Capital
  • CDP Venture Capital
  • Cherry Ventures
  • Bayern Kapital

Proxima Fusion Overview

About Proxima Fusion

Proxima Fusion is a Munich-headquartered startup founded in 2022 that engineers fusion power plants using quasi-isodynamic stellarator technology. It advances compact stellarator designs for stable plasma confinement to generate clean electricity. The company collaborates with research institutions like Max Planck Institute and has raised seed funding to prototype high-temperature superconducting magnets for commercial fusion reactors.


Founded

2023

HQ

GermanyMunich

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Valuation

$2.7B (Jul 2026)

Proxima Fusion Valuation

Proxima Fusion is currently valued at $2.7B, based on its Series B in July 2026.

The $468M round was led by East X Ventures, Bradley Horowitz, RWE and XTX Ventures, with participation from redalpine, Elaia, Balderton Capital, UVC Partners, KfW Capital and 6 other investors.

Proxima Fusion valuation by funding round

Proxima Fusion valuation by funding round
DateStageValuation
Jul 2026Series B$2.7B

Proxima Fusion Funding History

Proxima Fusion has raised a total of $684M across 7 funding rounds.

Proxima Fusion's first fundraising round was a $8M pre-seed round in May 2023. The most recent completed round was a $468M Series B in July 2026.

Proxima Fusion funding rounds

Proxima Fusion funding rounds
DateStageInvestorsRaisedValuationDeal Summary
Jul 2026Series BEast X Ventures (lead); Bradley Horowitz (lead); RWE (lead); XTX Ventures (lead); redalpine; Elaia; Balderton Capital; UVC Partners; KfW Capital; Bayern Kapital; Burda Principal Investments; CDP Venture Capital; Lightspeed Venture Partners; Cherry Ventures; DST Global$468M$2.7BProxima Fusion closed a €411 million ($468 million) financing round on July 7, 2026, raising capital at a post-money valuation of €2.4 billion ($2.7 billion), establishing it as Europe's best-funded fusion company. The round was led by XTX Ventures and East X Ventures, with strategic investors RWE and Google participating alongside returning investors including Balderton Capital, Cherry Ventures, Plural, UVC Partners, DST Global Partners, and the EIC Fund. Balderton Capital, which previously co-led Proxima's €130 million Series A in June 2025, participated again in this larger round as a returning investor. The company issued convertible preferred stock in the transaction, with the funding intended to accelerate development of Europe's first commercial stellarator-based fusion power plant targeted for the 2030s. Proxima Fusion, based in Munich with offices in Oxford and Zurich, is pursuing an alternative to fission-based nuclear energy using stellarator design technology. As a deep hard technology company, Proxima represents Germany's newest unicorn and positions Europe competitively against US and China in fusion investment.
Sep 2025Series AEuropean Innovation Council; Brevan Howard Asset Management; CDP Venture Capital; Leitmotif$18M-Proxima Fusion, a Munich-based fusion energy company spun out of the Max Planck Institute for Plasma Physics in 2023, develops stellarator-based fusion power plants. The company announced a €15 million extension to its Series A round on September 9, 2025, funded by CDP Venture Capital, European Innovation Council Fund, and Brevan Howard Macro Venture Fund. This extension brought total funding to €200 million ($230 million) in private and public capital. The extension followed the initial €130 million Series A closed in June 2025, co-led by Cherry Ventures and Balderton Capital with participation from investors including Leitmotif. Proxima Fusion grew to 100 employees post-extension and placed large-scale purchase orders to advance hardware execution. The funding supports development toward a commercial fusion power plant in the 2030s, leveraging Europe's fusion research legacy and supply chains.
Jun 2025Series ABalderton Capital (lead); Cherry Ventures (lead)$153M-Proxima Fusion, a Munich-based fusion energy startup spun out from the Max Planck Institute for Plasma Physics in early 2023, develops stellarator-based fusion power plants using high-temperature superconductors and advanced computing to magnetically confine plasma for clean energy production. The company closed an oversubscribed €130 million ($150 million) Series A funding round on June 11, 2025, co-led by Cherry Ventures and Balderton Capital, with participation from UVC Partners, DeepTech & Climate Fonds, Plural, Leitmotif, Lightspeed, Bayern Kapital, HTGF, Club degli Investitori, OMNES Capital, Elaia Partners, Visionaries Tomorrow, Wilbe, and redalpine, which led the prior seed round. This brings total funding to over €185 million in private and public capital, marking Europe's largest private fusion investment to date. The proceeds will fund completion of the Stellarator Model Coil demonstration, design and site selection for the Alpha demo stellarator, with plans to complete the coil and break ground by early 2027, targeting first plasma in 2031. Potential sites include Germany and other European countries like the UK. The raise, combined with anticipated non-dilutive capital, is expected to support operations through 2028, ahead of a Series B for Alpha construction. Proxima positions itself as Europe's leading stellarator fusion contender, leveraging scientific expertise from institutions like IPP with commercial ambitions to decarbonize energy grids. CEO Francesco Sciortino emphasizes fusion's role in shifting energy dependence to technological leadership, predicting fusion giants by the early 2030s. Investors highlight Proxima's engineering team and potential to lead in clean, limitless energy.
Jul 2024SeedEIC Accelerator (lead)$16M-Proxima Fusion is a Munich-based stellarator fusion startup developing current-free stellarator technology for commercial fusion power generation. The company received support from the European Innovation Council (EIC) Accelerator program in July 2024 as part of a cohort of 68 selected deep-tech startups across Europe. The EIC Accelerator provides blended financing combining grants (up to €2.5 million) and equity investments; Proxima Fusion was among the 96% of awardees accepting this dual-funding structure. The company has subsequently raised significant additional capital, extending its Series A round to €200 million total funding (approximately $230 million USD) by September 2025, with investments from CDP Venture Capital (Italy's largest venture capital operator), the European Innovation Council Fund, and Brevan Howard Macro Venture Fund. Proxima Fusion is developing the Stellarator Magnet Coil (SMC) prototype with a target completion date of 2027, alongside design work on its Alpha demonstration stellarator aimed at achieving net energy gain, positioning itself as Europe's flagship fusion pioneer.
Apr 2024Seedredalpine (lead); Plural Platform; UVC Partners; Max Planck Foundation; HTGF; DeepTech & Climate Fonds; Bayern Kapital; Leitmotif; Wilbe Capital; Visionaries Tomorrow$21M-Proxima Fusion is a Munich-based fusion energy startup spun out from the Max Planck Institute for Plasma Physics in April 2023, developing the first generation of fusion power plants using quasi-isodynamic stellarators with high-temperature superconductors. The company leverages collaborations with leading institutions like the Max Planck Institute, benefiting from Germany's forefront position in stellarator research. redalpine led the oversubscribed €20M ($20M) seed round in 2024, with participation from Bayern Kapital, DeepTech & Climate Fonds, HTGF, Leitmotif, Max Planck Foundation, Plural Platform, UVC Partners, Visionaries Tomorrow, and Wilbe Capital. The funding supports Proxima's engineering-first approach to practical grid deployment challenges in fusion technology. The seed investment highlights confidence in Proxima's world-leading team of experts in plasma physics, computational design, superconductivity, and stellarator engineering. redalpine emphasized the startup's strategic Munich location and partnerships as key advantages. The round positions Proxima to accelerate technological development, secure regulations, and access green energy grants from government and EU sources. Subsequently, Proxima raised a €130M ($149M-$150M) Series A in 2025, co-led by Cherry Ventures and Balderton Capital, with participation from many seed investors including redalpine, bringing total funding over €185M. This was Europe's largest private fusion investment to date, aimed at building the world's first stellarator-based commercial fusion power plant in the 2030s, with a demonstration system Alpha planned for 2031. In September 2025, Proxima extended Series A by €15M to reach €200M ($230M) total funding from CDP Venture Capital, EIC Fund, and Brevan Howard, growing headcount to 100 and placing hardware purchase orders.
Nov 2023Pre-seedFlixfounders; Visionaries Tomorrow$500K--
May 2023Pre-seedPlural Platform (lead); UVC Partners (lead); HTGF; Wilbe Capital$8M-Proxima Fusion is a Munich-based fusion energy startup spun out from the Max Planck Institute for Plasma Physics, developing stellarator-based fusion power plants using high-temperature superconductors and advanced computing to achieve clean, sustainable energy generation. The company raised a €7 million pre-seed round on May 30, 2023, co-led by Plural Platform and UVC Partners, with participation from High-Tech Gründerfonds (HTGF) and Wilbe Capital (Wilbe Group). Funds support further development of fusion power plant designs, aiming to deploy a high-performance stellarator and build the world’s first plant by the 2030s. Proxima Fusion leverages the Wendelstein 7-X stellarator's advancements for steady-state operation and high-performance plasma confinement. Subsequent rounds include a €130 million Series A co-led by Cherry Ventures and Balderton Capital, bringing total funding over €185 million, with later extensions reaching €200 million.

Who has invested in Proxima Fusion?

26 investors have backed Proxima Fusion across its funding rounds, including UVC Partners, HTGF, Balderton Capital, CDP Venture Capital, Cherry Ventures and Bayern Kapital.

Lead investors include East X Ventures, Bradley Horowitz, RWE, XTX Ventures, Balderton Capital and 5 other investors.


Proxima Fusion Investors

Investors in Proxima Fusion by funding rounds participated
InvestorHQRoundsRoleFirst check
UVC PartnersGermanyMunich3LeadMay 2023
redalpineSwitzerlandZurich2LeadApr 2024
Plural PlatformUnited KingdomLondon2LeadMay 2023
Balderton CapitalUnited KingdomLondon2LeadJun 2025
HTGFGermanyBonn2ParticipantMay 2023
Bayern KapitalGermanyLandshut2ParticipantApr 2024
CDP Venture CapitalItalyRome2ParticipantSep 2025
Cherry VenturesGermanyBerlin2LeadJun 2025
LeitmotifUnited StatesUnited States2ParticipantApr 2024
Wilbe CapitalUnited KingdomUnited Kingdom2ParticipantMay 2023
Visionaries TomorrowGermanyBerlin2ParticipantNov 2023
European Innovation CouncilBelgiumBrussels1ParticipantSep 2025
ElaiaFranceFrance1ParticipantJul 2026

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Proxima Fusion Competitors

Proxima Fusion competitors include listed companies like Chugoku Electric Power, Hubei Energy, Tohoku Electric Power and J-Power, and private ones like Commonwealth Fusion Systems and Sungrow New Energy.

Public and private companies comparable to Proxima Fusion
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Chugoku Electric PowerJapanJapanPublicly listed$9.3B$1.6B$2.6B2.2x
Commonwealth Fusion SystemsUnited StatesUnited StatesPrivate--$3.4B-
Hubei EnergyChinaChinaPublicly listed$2.6B$1.2B$4.7B4.1x
Tohoku Electric PowerJapanJapanPublicly listed$15B$2.4B$4.7B1.4x
J-PowerJapanJapanPublicly listed$7.6B$1.6B$4.8B1.9x
Sungrow New EnergyChinaHefeiPrivate--$2.8B-

Proxima Fusion Public Comps

Proxima Fusion is still privately-owned, but its public comps include Boralex, Solaria Energia, SJVN, Nexus Select Trust, Chugoku Electric Power, Meshek Energy Renewable, Grenergy Renovables, ReNew, Pertamina Geothermal and Cadeler.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Boralex$612M$357M10.2x10.7x17.4x13.0x
Solaria Energia$227M-19.1x10.0x-11.2x
SJVN$443M$264M13.1x11.1x22.0x15.9x
Nexus Select Trust$266M$188M11.8x11.2x16.8x16.6x
Chugoku Electric Power$9.3B$1.6B2.2x2.2x12.7x14.5x
Meshek Energy Renewable$44M$28M72.1x-113.2x-
Grenergy Renovables$804M$199M5.4x3.9x21.8x16.3x
ReNew$1.4B$976M7.3x6.2x10.4x9.8x

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Common questions about Proxima Fusion

When was Proxima Fusion founded?Proxima Fusion was founded in 2023.
Where is Proxima Fusion headquartered?Proxima Fusion is headquartered in Munich, Germany.
Is Proxima Fusion publicly listed?No, Proxima Fusion is a private, VC-backed company.
What is Proxima Fusion's valuation?Proxima Fusion was last valued at $2.7B in its Series B in July 2026.
How much funding has Proxima Fusion raised?Proxima Fusion has raised $684M across 7 funding rounds.
What was Proxima Fusion's last funding round?Proxima Fusion's last funding round was a $468M Series B in July 2026, led by East X Ventures, Bradley Horowitz, RWE and XTX Ventures.
Who are Proxima Fusion's investors?Proxima Fusion's investors include UVC Partners, redalpine, Plural Platform, Balderton Capital, HTGF, Bayern Kapital, CDP Venture Capital, Cherry Ventures, Leitmotif, Wilbe Capital and 16 others.
Which companies are comparable to Proxima Fusion?Companies comparable to Proxima Fusion include Chugoku Electric Power, Commonwealth Fusion Systems, Hubei Energy, Tohoku Electric Power, J-Power and Sungrow New Energy.

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