What's happening
Great British Energy-Nuclear signed a contract with Rolls-Royce SMR on April 13, 2026, for site-specific design of three initial small modular reactor units at the Wylfa site in Wales, generating at least 1.4 GW of power. The government allocated £2.6 billion in the 2025 Spending Review to enable the contract and wider SMR program delivery costs, while the National Wealth Fund committed up to £599 million as a loan facility to support Rolls-Royce SMR's design and development work.
Rolls-Royce SMR was selected as the preferred provider in June 2025, with each reactor generating 470 MWe and capable of powering the equivalent of three million homes for over 60 years. Great British Energy-Nuclear acquired the Wylfa site from Hitachi for £160 million in early 2024, and the project has already awarded £350 million in contracts across the UK supply chain this year. The units are expected to become operational by the mid-2030s.
Why it matters for markets
The contract represents a significant revenue opportunity for Rolls-Royce Holdings, which closed at $17.86 with a market cap of $148.77 billion and generated $21.21 billion in revenue. The SMR program extends beyond the initial three units, with the project expected to support around 3,000 jobs at peak construction and thousands more in the supply chain, creating substantial long-term revenue streams for the company's power systems division.
The timing aligns with growing power demands from AI data centers and electric vehicle infrastructure, sectors requiring reliable baseload power that SMRs can provide. Rolls-Royce SMR has already secured commitments for up to six additional units generating 3 GW in Czechia with ČEZ, indicating potential for international expansion beyond the UK market.
The £2.6 billion government backing and £599 million loan facility provide financial certainty for the program's development phase, reducing execution risk for Rolls-Royce while positioning the company to capture a larger share of the emerging SMR market as energy security concerns drive nuclear revival globally.
Sectors and assets to watch
Nuclear technology suppliers and engineering firms stand to benefit from the £350 million in supply chain contracts already awarded this year, though specific beneficiaries beyond Rolls-Royce SMR remain to be disclosed. The project's focus on UK-based supply chains suggests domestic industrial companies in steel, concrete, and specialized nuclear components may see increased demand.
Utility companies and power infrastructure investors should monitor the program's progress as the 1.4 GW capacity represents a significant addition to UK baseload power generation. Data center operators and AI infrastructure companies may also benefit from the reliable, carbon-free power source, particularly as energy-intensive computing demands continue growing through the 2030s.
What to watch next
Key milestones include the completion of site-specific design work and regulatory approvals required before construction begins. International expansion opportunities will depend on Rolls-Royce SMR's ability to replicate the UK model in other markets, with the Czechia project serving as an early indicator of export potential. Monitor quarterly updates on the £599 million loan facility drawdown and additional supply chain contract awards as the program advances toward its mid-2030s operational target.