UK Announces Fusion Strategy & £2.5bn Funding Allocation

16 March 2026

The UK government has published its 2026 Fusion Strategy, confirming over £2.5bn across five years, first committed at the June 2025 Spending Review, to accelerate commercial fusion development, with a funding breakdown that reveals several new capital commitments alongside an ambitious policy reform agenda. The strategy is framed around three delivery themes: accelerating R&D, growing investment and supply chains, and policy innovation. It explicitly identifies the shift from scientific leadership to industrial competitiveness as the central challenge, citing accelerating international investment from China, Germany, Japan, and the United States as the competitive context.

The largest single allocation is £1.3bn for UK Fusion Energy, the renamed successor to UK Industrial Fusion Solutions (UKIFS), which will lead delivery of the STEP prototype plant at West Burton in Nottinghamshire. The renaming, announced as part of the strategy, signals the organisation’s intended evolution into a commercial systems integrator capable of raising external investment.

On the R&D side, the government is allocating £740m to infrastructure and facilities covering both magnetic and inertial confinement fusion, and £180m to LIBRTI, a lithium breeding facility described as a global first-of-a-kind for tritium fuel technology. Total planned investment in LIBRTI reaches £220m. A further £125m is earmarked for the Culham AI Growth Zone, which includes £45m for Sunrise, a 1.4MW fusion-dedicated supercomputer described by the government as the largest of its kind in the world. The remaining allocations cover industry support and commercialisation (£110m), international collaboration (£80m), and skills development targeting over 2,000 trainees (£50m).

On policy, the strategy commits the UK to developing what it describes as the world’s first market framework for fusion energy, and to publishing a draft National Policy Statement for Fusion (EN-8) in summer 2026 to streamline planning approvals. The government also said it would engage the energy insurance market to develop fusion-specific coverage outside standard nuclear exclusion clauses.