Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, with reference to the Written Statement of 6 February 2025 on Consenting and Regulation of Nuclear Energy, HCWS419, what assessment he has made of the potential merits of using the UK’s plutonium stockpile to support the delivery of the Government’s policies on nuclear power.

The Government has published a refreshed planning framework for new nuclear reactors (EN-7), including small and advanced modular reactors, for consultation. The new planning framework proposes to empower nuclear developers to identify potentially suitable sites in real-time against a robust set of siting criteria.

Plans for Government policies on nuclear power were taken into account when making the decision on plutonium disposition. All current reactor projects use uranium oxide fuel. In addition, the Nuclear Decommissioning Authority (NDA) conducted substantial technical, deliverability and economic analysis to identify a preferred option for a long-term disposition solution for the UK-owned plutonium, considering options for immobilisation and reuse of the material as fuel. Immobilisation is the solution that will place the material beyond reach soonest and with greatest delivery confidence. This is a key step towards dealing with our nuclear legacy and not passing the burden on to future generations.