Rolls‑Royce SMR has formally signed the contract with Great British Energy – Nuclear to deliver the UK’s first Small Modular Reactors (SMRs).

Rolls-Royce SMR was selected as the preferred technology partner last June and £2.6bn was allocated in the 2025 Spending Review towards the wider programme delivery.

The UK’s first SMR project at Wylfa on Anglesey in North Wales will support around 3,000 jobs at peak construction and thousands more across the UK supply chain.

The contract will require Rolls-Royce SMR to deliver against key milestones as it commences site-specific design, regulatory engagement, and planning processes, ahead of a future Final Investment Decision.

Rolls-Royce SMR will build three units in the UK, each generating enough electricity to power 1m homes.

BAM Nuttall, Laing O’Rourke and Atkins are part of the consortium developing its SMR design.

Chris Cholerton, Chief Executive of Rolls-Royce SMR, said: “This contract unlocks the delivery of our first three units and brings certainty to the UK SMR programme.

“We are transforming the way nuclear projects are delivered, to give greater cost and schedule certainty with a standardised, factory-built approach.

“This project is important to the UK’s energy security and will power up our business and the UK supply chain, and we are excited by the opportunity and are focused on successful delivery.”