X-Energy Applies for UK GDA for Xe-100 Reactor

Key Highlights

• X-Energy submitted an application for the UK's Generic Design Assessment (GDA) process for its Xe-100 reactor.
• The GDA is a critical step for deploying up to 6 GW of new nuclear in the United Kingdom.
• The assessment is expected to conclude by the end of 2029.
• The Xe-100 is an 80 MWe High Temperature Gas-cooled Reactor (HTGR).
• X-Energy and Centrica signed a Joint Development Agreement in September 2025 for the UK's first advanced nuclear fleet.
• Hartlepool is the preferred first site for a 12-unit/960 MWe Xe-100 plant.
• The project is estimated to generate a minimum of 40 billion in lifetime economic value for the UK, with 12 billion from the first project.