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- Newcleo
Newcleo Funding, Investors & Competitors
Newcleo has raised $766M across 5 funding rounds, most recently a $89M Series B in February 2026.
Last Newcleo funding round
$89M
Series B · Feb 2026
Cumulative funding Newcleo raised
$766M
across 5 funding rounds
Key investors in Newcleo
Club degli Investitori
MACAN
Walter Tosto
Exor Ventures
LIFTT
Indaco Venture Partners
Banca Patrimoni Sella & C.
Kairos Partners
About Newcleo
Newcleo is a United Kingdom-headquartered clean energy company developing small modular reactors using Lead-Cooled Fast Reactor technology. Its reactors employ lead coolant for enhanced safety, eliminating steam explosion risks, and incorporate a closed fuel cycle that recycles nuclear waste to minimize new uranium needs and long-term disposal challenges.
Founded
2021
HQ
Website
Status
Privately held
Customer focus
B2B
Revenue model
Product sales
Sectors
Newcleo Funding History
Newcleo has raised a total of $766M across 5 funding rounds.
Newcleo's first fundraising round was a $118M undisclosed-stage round in August 2021. The most recent completed round was a $89M Series B in February 2026.
Newcleo funding rounds
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Feb 2026 | Series B | CERN; Azimut Investments; Kairos Partners; Orion; Indaco Venture Partners; Danieli & C. Officine; Walter Tosto; Cementir Holding | $89M | Newcleo is a European nuclear technology company founded in 2021, headquartered in Paris with operations in Italy, the UK, Belgium, and Slovakia, employing around 1,000 people. It develops advanced small modular reactors (SMRs), specifically lead-cooled fast reactors that use recycled nuclear waste as fuel to generate clean electricity, positioning itself as a safer and more efficient alternative to traditional water- or sodium-cooled designs. The technology aims to support decarbonization for energy-intensive industries like steel, cement, and engineering by providing low-carbon power solutions. In early 2026 (reported around February-March), Newcleo closed a funding round of €75 million (approximately $85-88 million USD), matching the specified investors: new participants Danieli & C., Cementir Holding, Orion Valves (via Ecoline), and others like NextChem, alongside existing backers Azimut Investments, CERN pension fund, Indaco Venture Partners, Kairos Partners, and Walter Tosto. This round brought total funding since 2021 to over €645 million (~$755-760 million), with more than $124 million raised in 2025 alone. Proceeds will fund expanded R&D infrastructure in Europe, including the PRECURSOR non-nuclear reactor and OTHELLO 2 MW system at ENEA’s Brasimone Research Center, while accelerating U.S. market entry amid favorable policy shifts. Newcleo has made tangible progress in licensing, siting, and commercial partnerships across France, Italy, Slovakia, and the U.S., with strategic collaborations such as a $2 billion partnership with Oklo for U.S. fuel production and reprocessing infrastructure, and Italian deals with Fincantieri for nuclear-powered vessels, Saipem for floating plants, and Danieli for green steel. CEO Stefano Buono emphasized investor appeal in the company's vertical integration, regulatory advancements, and ability to deliver affordable nuclear energy. The investor mix of industrial firms and financial backers signals growing interest in SMRs amid global nuclear revival, differentiating Newcleo through waste-fueled tech and cross-border expansion strategies. |
| Sep 2024 | Series A | Ingerop; Club degli Investitori; Walter Tosto; Inarcassa | $150M | Newcleo is a European developer of advanced nuclear technologies, founded in September 2021 and based in Paris, France. The company specializes in lead-cooled fast reactor technology paired with fuel derived from recycled nuclear waste, positioning its approach as a solution for reducing costs and minimizing risks in nuclear waste management. It operates across France, the UK, Italy, Switzerland, Slovakia, and Belgium with approximately 950–1,000 employees across multiple locations. In September 2024, Newcleo closed a Series A funding round (described as Series A - II in some sources), raising €48 million as part of its broader effort to close a €1 billion funding target announced 18 months prior. This round brought total funding to approximately €535 million by September 2024, with additional raises in late 2024 and early 2026 pushing total capital raised to over €645 million by February 2026. The company is developing lead-cooled fast reactor technology and has established partnerships with major industrial firms including Fincantieri for nuclear-powered ships, Saipem for floating nuclear power plants, MAIRE for green chemicals production, and Danieli for green steel manufacturing. Revenue grew from €9 million in 2023 to €26 million in the first half of 2024, with the group reporting EUR 50 million in turnover during 2024, primarily generated through acquired companies and service contracts rather than reactor sales, as commercial reactor deployment remains years away. |
| May 2024 | Undisclosed stage | - | $94M | Newcleo is a European nuclear technology developer founded in September 2021, headquartered in Paris, that designs and builds next-generation lead-cooled fast reactors (LFRs) fueled with MOX, powered by recycled nuclear waste. The company operates as a small modular reactor (SMR) developer positioning itself in the advanced nuclear energy sector amid renewed policy support for nuclear power in the United States and Europe. Newcleo has raised substantial capital from both venture and industrial investors, including venture capital firms Kairos and Indaco Ventures, asset manager Azimut Investments, the CERN pension fund, and industrial partners such as Danieli & C (steel manufacturing), Cementir Holding (cement), Orion Valves, NextChem (energy engineering), and Walter Tosto. The company has grown to over 1,000 employees across multiple locations in France, Italy, the UK, Switzerland, Belgium, and Slovakia, with three manufacturing facilities and partnerships exceeding 90. Newcleo's funding trajectory shows significant capital deployment: the company has raised more than €645 million ($645 million equivalent) since its 2021 launch, with €75 million ($88 million) secured in recent months and $124 million raised across 2025 alone, reflecting strong investor confidence in its technology and market positioning within the growing advanced nuclear sector. |
| Jun 2022 | Undisclosed stage | MACAN; Banca Patrimoni Sella & C. | $315M | - |
| Aug 2021 | Undisclosed stage | Club degli Investitori; Exor Ventures; LIFTT; MACAN | $118M | Newcleo, a clean and safe nuclear technology company headquartered in London, UK, was incorporated on August 31, 2021, with the closing of a USD 118 million founding capital round led by visionary individuals and institutional investors including Exor Seeds (New York-based), LIFTT, and Club degli Investitori (both Turin-based). The company simultaneously acquired Hydromine Nuclear Energy S.à r.l. (HNE), leveraging an existing significant patent portfolio to develop safe, clean, inexpensive nuclear energy solutions aimed at achieving a carbon-neutral world. Founded by Stefano Buono, who previously created Advanced Accelerator Applications in nuclear medicine, Newcleo seeks to disrupt the energy sector through scalable industrial applications of innovative nuclear technologies combined with existing ones. The funding supports Newcleo's strategy of pursuing global M&A transactions, partnerships with energy sector players, institutions, academia, and investors to rapidly bring projects to market and establish a new industrial standard. Subsequent funding includes a $314.7 million round on July 19, 2022, and additional rounds in 2024 totaling around $244.4 million, bringing total funding to over $559 million across three rounds as of recent data, with operations expanding to Paris, France, Italy, the UK, Belgium, and Slovakia, employing 501-1000 people focused on lead-cooled fast reactors powered by nuclear waste for small modular reactors (SMRs). |
Who has invested in Newcleo?
15 investors have backed Newcleo across its funding rounds, including Club degli Investitori, MACAN, Walter Tosto, Exor Ventures, LIFTT and Indaco Venture Partners.
Newcleo Investors
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 2 | Participant | Aug 2021 | ||
| 2 | Participant | Sep 2024 | ||
| 2 | Participant | Aug 2021 | ||
| 1 | Participant | Feb 2026 | ||
| 1 | Participant | Feb 2026 | ||
| 1 | Participant | Sep 2024 | ||
| 1 | Participant | Feb 2026 | ||
| -- | 1 | Participant | Feb 2026 | |
| 1 | Participant | Feb 2026 | ||
| 1 | Participant | Feb 2026 | ||
| 1 | Participant | Aug 2021 | ||
| 1 | Participant | Feb 2026 | ||
| 1 | Participant | Aug 2021 | ||
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Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
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Start Free TrialAcquisitions by Newcleo
Newcleo has acquired 3 companies to date.
Last acquisition by Newcleo was on June 7th 2023. Newcleo acquired Fucina Italia for undisclosed valuation.
Latest Acquisitions by Newcleo
| Description | Fucina Italia is an Italian manufacturer of specialized machinery including cranes, lifting equipment, steel processing gear, innovative railway sleepers, and cellulose handling accessories. Based in Italy, the company supplies customized cranes, port handling tools, pressure tanks, containers, and radioactive waste storage units to enhance productivity across industrial sectors. | Servizi di Ricerche e Sviluppo is a Milan-based engineering firm designing, constructing, and testing industrial structures, systems, and components in Italy. The company specializes in automation, mechanical engineering, and prototyping for manufacturing sectors including automotive and energy. SRS collaborates with clients on custom machinery and quality assurance protocols. | Hydromine Nuclear Energy is a New York-headquartered developer of advanced nuclear reactor technologies, focusing on lead-cooled fast reactors like the LFR-AS-200 and LFR-TL-5 designs. The firm operates from Yaoundé as well, drawing on expertise in power project origination, financing, construction, and operations across Africa and internationally. Hydromine Nuclear Energy targets utility-scale projects emphasizing safety and cost-competitiveness in clean energy deployment. |
| HQ Country | |||
| HQ City | Livorno | Rome | New York City, NY |
| Deal Date | 7 Jun 2023 | 7 Jun 2023 | 31 Aug 2021 |
| Valuation | undisclosed | undisclosed | undisclosed |
| EV/Revenue | |||
| EV/EBITDA | |||
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Newcleo Competitors
Newcleo competitors include listed companies like Vistra, Cameco, CEZ Group and Uniper, and private ones like Valar Atomics and Commonwealth Fusion Systems.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $18B | $5B | $48B | 3.3x | ||
| Publicly listed | $2.5B | $825M | $41B | 16.1x | ||
| Publicly listed | $16B | $6.7B | $35B | 2.9x | ||
| Publicly listed | $70B | $2B | $24B | 0.4x | ||
| Private | - | - | $6B | - | ||
| Private | - | - | $3.4B | - |
Newcleo Public Comps
Newcleo is still privately-owned, but its public comps include Aramco, ExxonMobil, Chevron, PetroChina, Shell, GE Vernova, TotalEnergies, NextEra Energy, ConocoPhillips and Iberdrola.
| Last FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $446B | $213B | 3.9x | 3.7x | 8.2x | 7.1x | |||
| $324B | $68B | 2.2x | 1.8x | 10.5x | 8.0x | |||
| $184B | $41B | 2.4x | 2.0x | 10.8x | 7.2x | |||
| $427B | $70B | 0.8x | 0.7x | 4.7x | 4.4x | |||
| $267B | $55B | 1.2x | 1.0x | 5.8x | 4.5x | |||
| $38B | $3.2B | 6.2x | 5.4x | 73.5x | 43.5x | |||
| $182B | $38B | 1.3x | 1.2x | 6.3x | 5.0x | |||
| $27B | $16B | 10.5x | 9.6x | 17.9x | 16.2x | |||
This data is available for Pro users. Sign up to see all Newcleo competitors and their valuation data. Start Free Trial | ||||||||
Common questions about Newcleo
| When was Newcleo founded? | Newcleo was founded in 2021. |
| Where is Newcleo headquartered? | Newcleo is headquartered in Paris, France. |
| Is Newcleo publicly listed? | No, Newcleo is a private, VC-backed company. |
| How much funding has Newcleo raised? | Newcleo has raised $766M across 5 funding rounds. |
| What was Newcleo's last funding round? | Newcleo's last funding round was a $89M Series B in February 2026. |
| Who are Newcleo's investors? | Newcleo's investors include Club degli Investitori, Walter Tosto, MACAN, CERN, Azimut Investments, Ingerop, Kairos Partners, Orion, Indaco Venture Partners, Danieli & C. Officine and 5 others. |
| Which companies are comparable to Newcleo? | Companies comparable to Newcleo include Vistra, Cameco, CEZ Group, Uniper, Valar Atomics and Commonwealth Fusion Systems. |
| How many companies has Newcleo acquired? | Newcleo has acquired 3 companies, including Fucina Italia, Servizi di Ricerche e Sviluppo and Hydromine Nuclear Energy. |
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