US private fusion energy company TAE Technologies and the UK Atomic Energy Authority have announced that TAE Beam UK - their joint venture focused on commercialising particle accelerator technology for fusion and non-fusion applications - has been formally established in the UK and is now fully funded.

The joint venture was announced in December 2025 as part of a bilateral and reciprocal investment commitment to commercialise TAE's proprietary particle accelerator technology for the global market. TAE Beam UK is a collaborative entity that will harness the partners' collective scientific leadership, commercialisation experience and market innovation to develop this highly versatile advanced particle accelerator technology, beginning with neutral beams for fusion. The venture aims to design, develop, and ultimately manufacture and service neutral beams for a wide range of fusion approaches, as well as adapt the accelerator technology for state-of-the-art cancer therapeutics, and other applications like food safety and homeland security.

TAE's approach to fusion combines advanced accelerator and plasma physics, and uses abundant, non-radioactive hydrogen-boron (p-B11) as a fuel source.

TAE's approach to fusion combines advanced accelerator and plasma physics, and uses abundant, non-radioactive hydrogen-boron (p-B11) as a fuel source. The proprietary magnetic beam-driven field-reversed configuration (FRC) technology injects high-energy hydrogen atoms into the plasma to make the system more stable and better confined. This solution is compact and energy efficient, California-based TAE says.