A Washington-based nuclear energy company has achieved a key milestone for the UK deployment. TerraPower has begun the formal commencement of the UK regulatory review for its Natrium plant, and the launch of its subsidiary, TerraPower UK Ltd.<\/p>\n
These regulatory and commercial activities mark the company\u2019s most significant steps to date toward deploying a fleet of Natrium reactors in the United Kingdom, according to the company.<\/p>\n
Generic Design Assessment (GDA) process begins<\/p>\n
\u201cTerraPower is entering the UK market with a long-term commitment to supporting the nation\u2019s clean energy future and establishing ourselves as a serious and reliable deployment partner,\u201d said<\/a> Chris Levesque, President and CEO of TerraPower. <\/p>\n \u201cStarting Step 1 of the GDA process and establishing TerraPower UK mark major advances in our mission to bring the Natrium technology to Britain. These milestones demonstrate TerraPower\u2019s dedication to working alongside the UK to deploy safe, clean and reliable nuclear energy for decades to come.\u201d<\/p>\n TerraPower has now begun Step 1 of the Generic Design Assessment (GDA) process. The company submitted its GDA application in October 2025, its first international regulatory filing for the Natrium technology and received formal acceptance by the Department for Energy Security and Net Zero in February 2026. The start of Step 1 of the GDA process marks a significant step toward Natrium advanced reactor deployment in the UK, supporting Britian\u2019s ambition to accelerate innovative, sustainable and next-generation energy solutions, according to<\/a> a press release.<\/p>\n \u2018Delivering a golden age of nuclear\u2019<\/p>\n \u201cTerraPower\u2019s decision to establish a UK presence is an important vote of confidence in the UK as a leading destination for nuclear projects and investment,\u201d said<\/a> Lord Vallance, Minister for Science, Innovation, Research and Nuclear. <\/p>\n \u201cWe are delivering a golden age of nuclear and recognise the role advanced nuclear technology could play, providing clean, reliable power and strengthening our energy security.\u201d<\/p>\n Natrium technology is first mover in advanced reactor sector<\/p>\n The company revealed that the Natrium technology<\/a> is the first mover in the advanced reactor sector and is well positioned to support rapidly increasing energy demand. The Natrium plant design features a 345 MW sodium-cooled fast reactor with a patented molten salt-based energy storage system. <\/p>\n The storage technology can boost the system\u2019s output to 500 MW of power when needed as it is designed to keep base output steady, ensuring constant reliability, and can quickly ramp up when demand peaks\u2014it is the only advanced reactor design with this unique feature.<\/p>\n \u201cConfirming arrangements is an important enabling step for ONR to engage with and assess TerraPower\u2019s Natrium<\/a> design,\u201d said Diego Fernandez Lisbona, ONR\u2019s Head of Regulation for the TerraPower Natrium GDA and Advanced Nuclear Technologies. <\/p>\n \u201cInteractions in 2025, through our framework for Early Engagement, have provided early design familiarity and we will continue to engage closely with TerraPower and broader stakeholders as GDA progresses.\u201d<\/p>\n TerraPower has been successfully working through the regulatory requirements in the United States, where the first Natrium plant is being constructed. This includes the recent construction approval by the U.S. Nuclear Regulatory Commission to begin building the plant. The UK\u2019s GDA process will expand on the company\u2019s experience and efforts in the U.S. and will allow TerraPower to establish deployment timelines for Natrium sites in the country, as per the release<\/a>.<\/p>\n \u201cWe welcome TerraPower\u2019s entry into the UK\u2019s Generic Design Assessment (GDA) process,\u201d said Yeliz Marshall, NRW\u2019s Radioactivity and Industry Policy Senior Specialist Advisor. <\/p>\n \u201cIt provides a valuable route to embed environmental protection early in the Natrium design and address key risks ahead of any future deployment. This GDA also creates scope to benefit from closer international regulatory working under the UK\u2013U.S. Atlantic Partnership for Advanced Nuclear Energy.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"A Washington-based nuclear energy company has achieved a key milestone for the UK deployment. 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