Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government what assessment they have made of the design of the Rolls-Royce nuclear reactor.

Rolls-Royce Small Modular Reactor (RRSMR) was given a grant of £210m in the Low-Cost Nuclear award in 2021 and is one of six selected technologies, in the first phase of the Great British Nuclear Technology Selection Process aiming to identify technologies best able to reach a project Final Investment Decision by the end of 2029 and deliver projects in the mid-2030s.

In April 2022, the regulators began a Generic Design Assessment (GDA) looking at the safety, security, and environmental impact of the RRSMR reactor design. The regulators concluded in April 2023, that all required activities for Step 1 of the RRSMR GDA have been completed and progressed to Step 2.