Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what recent comparative assessment he has made of the technical and strategic suitability of the Wylfa site for (a) a gigawatt-scale nuclear reactor and (b) Small Modular Reactors.

In November 2025, following careful deliberation, the Government announced that Wylfa will host Great British Energy-Nuclear (GBE-N) first Small Modular Reactor (SMR) project. Wylfa has the potential to accommodate more SMR units than other potential sites.

To pursue the option of further potential large-scale nuclear, the government has tasked GBE-N with identifying other suitable sites that could potentially host such a project. GBE-N will report back by Autumn 2026 on potential sites to inform future decisions in the next Spending Review and beyond.