Policy paper

Funding breakdown for fusion energy

Published 16 March 2026

© Crown copyright 2026

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This publication is available at https://www.gov.uk/government/publications/uk-fusion-strategy-2026/funding-breakdown-for-fusion-energy

The government is making a record investment in fusion energy of over £2.5 billion over 5 years (financial years 2025 to 2026 – 2029 to 2030). Current planned allocations are:

  • £1.3 billion delivered through UK Fusion Energy, for the next phase of delivering STEP in partnership with industry. Most of this will be invested in private industry including construction, engineering and other contracts
  • £740 million invested into cutting-edge R&D infrastructure and facilities in both magnetic and inertial confinement fusion
  • £180 million on building LIBRTI, a globally unique facility to develop fusion fuel technology for power plants
  • £125 million on developing the AI Growth Zone at Culham, including £45 million on the new ‘Sunrise’ fusion-dedicated supercomputer
  • £110 million on wider industry support, innovation, and commercialisation, supporting UK companies to develop new technologies
  • £80 million on international collaborations
  • £50 million on developing fusion skills training over 2,000 people in fusion related disciplines
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