Newcleo
Updated: November 25, 2025
Co-founder and CEO Stefano Buono
Country: UK | Funding: $677.1M (+)
Founded: 2021
Website: https://www.newcleo.com/
Newcleo develops small modular reactors (SMRs) that uses MOX fuel technology to reprocess spent uranium from conventional nuclear power plants. The 200 MW reactor uses lead as a coolant. This is an ultra-compact module with improved energy density compared to other technologies. MOX fuel, which stands for Mixed Pu-U Oxides consists of depleted uranium (a byproduct of the enrichment process in modern reactors) and plutonium (which is extracted from spent nuclear fuel). The company intends to use already available nuclear material in France in synergy with the in-country environment. Newcleo plans to install the first 30 MW lead-cooled fast reactor (LFR-AS-30) in Savigny-en-Véron and Beaumont-en-Véron.
Founded: 2021
Website: https://www.newcleo.com/
Newcleo develops small modular reactors (SMRs) that uses MOX fuel technology to reprocess spent uranium from conventional nuclear power plants. The 200 MW reactor uses lead as a coolant. This is an ultra-compact module with improved energy density compared to other technologies. MOX fuel, which stands for Mixed Pu-U Oxides consists of depleted uranium (a byproduct of the enrichment process in modern reactors) and plutonium (which is extracted from spent nuclear fuel). The company intends to use already available nuclear material in France in synergy with the in-country environment. Newcleo plans to install the first 30 MW lead-cooled fast reactor (LFR-AS-30) in Savigny-en-Véron and Beaumont-en-Véron.
