Newcleo

Paris, France
Active
LFR

Company overview

Founded
2021
Total funding
€645M+ total (€124M+ in 2025 alone)
Technology
LFR — Lead-cooled Fast Reactor

About

Newcleo is a Franco-Italian nuclear developer building lead-cooled fast reactors (LFRs) that use reprocessed nuclear waste as fuel. The company raised €75 million in early 2026 (its €88M article round) bringing 2025 fundraising to over €124 million and total funding to likely more than €645 million. Newcleo operates in France, Italy, the UK, Belgium, and Slovakia with approximately 1,000 employees. The design reduces long-term waste storage needs while generating clean power. The company completed the ASNR preparatory review in 2025 and is pursuing UK ONR justification simultaneously.

Key investors

Multiple private investors, institutional investors

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