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Fusion Energy News
Independent intelligence on the global fusion industry
Monday, July 20, 2026
Vol. III · Edition · Web
M&A · med impact
Kyoto Fusioneering signs JV agreement with UKAEA on tritium fuel cycle
Japanese engineering firm and UK national lab co-develop tritium handling for STEP and beyond.
Kyoto Fusioneering and the UK Atomic Energy Authority signed a joint-venture agreement to co-develop tritium fuel-cycle technology for the STEP programme and for third-party customers. The JV will operate from UKAEA's Culham Science Centre, with engineering staff from both organizations.
Tritium handling is broadly recognized as the bottleneck constraint for any near-term D-T pilot plant. Civilian tritium inventories sit at roughly 25 kilograms globally and grow at a few kilograms per year — a fraction of the rate any commercial fleet would require.
Tritium handling is broadly recognized as the bottleneck constraint for any near-term D-T pilot plant.
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