Commonwealth Fusion Systems partners with UKAEA to join Lithium Breeding Tritium Innovation programme

Type: Partnership · Technology: Nuclear · Country: United Kingdom · Announced: 2026-07-01

Commonwealth Fusion Systems and the UK Atomic Energy Authority signed a partnership on 1 July 2026 to join the Lithium Breeding Tritium Innovation (LIBRTI) programme. The LIBRTI programme, funded by a GBP 410 million UK government investment that includes a GBP 220 million allocation for the programme, will create a dedicated facility at UKAEA’s Culham Campus in Oxfordshire to test lithium‑breeding blanket technologies in a fusion‑relevant environment. UKAEA has supplied a 14 MeV deuterium‑tritium fusion system from SHINE Technologies to serve as the high‑flux neutron source for the facility, while CFS will design and build test articles for the initial blanket investigations. CFS, the developer of the SPARC prototype fusion machine in Devens, Massachusetts, will use the collaboration to gain hands‑on experience with its ARC blanket system design ahead of its planned commercial fusion plant in Virginia in the early 2030s. The partnership accelerates the global pathway to demonstrated fusion power‑plant scale technology by combining CFS’s high‑field magnet expertise with UKAEA’s test‑bed capabilities.

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