US and UK Forge Nuclear Alliance, Aiming for a ‘Golden Age’ of Clean Energy

September 18, 2025

The United States and the United Kingdom have solidified a significant partnership focused on advancing nuclear energy, particularly small modular reactors (SMRs) and microreactors. This collaboration aims to accelerate the development and deployment of next-generation nuclear technologies, enhance energy security, and drive down carbon emissions.

Key Takeaways

A new pact between the US and UK aims to speed up nuclear project approvals and investments.
Several major commercial deals worth billions are expected to be announced, involving companies like X-energy, Centrica, Holtec, and Rolls-Royce.
The partnership includes sharing research, aligning regulations, and boosting supply chains for nuclear components and fuel.
This initiative is anticipated to foster a new era of nuclear energy, potentially creating thousands of jobs and significant economic benefits.

A New Era of Nuclear Cooperation

The "Atlantic Partnership for Advanced Nuclear Energy" seeks to streamline the process for bringing new nuclear reactors online by sharing safety assessments between the two nations. This could reduce licensing times from several years to as little as two. The agreement is expected to unlock substantial private sector investment, with initial deals estimated to be worth around $100 billion.

Major Commercial Deals Announced

Several key commercial agreements are set to bolster this partnership. X-energy and Centrica plan to build up to 12 advanced modular reactors (AMRs) in Hartlepool, with a broader UK-wide program targeting 6 GW of power. Holtec International, EDF, and Tritax will develop data centers powered by SMRs at the former Cottam coal-fired power station. Additionally, Last Energy and DP World will establish microreactors for the expansion of London Gateway port, while TerraPower and KBR will explore sites for TerraPower’s Natrium advanced reactors in the UK. The nuclear fuel firm Urenco will also supply advanced nuclear fuel to the US market.

Driving Innovation and Economic Growth

This collaboration is seen as a catalyst for a "golden age" of nuclear energy, promising to create thousands of high-skilled jobs and deliver significant economic boosts. Companies like Rolls-Royce are already seeing positive market reactions, with their SMR technology gaining traction. The partnership also aims to eliminate dependence on Russian nuclear materials by 2028.

Addressing Energy Security and Climate Goals

In an era of increasing electricity demand and urgent climate action, nuclear power is being re-emphasized for its ability to provide reliable, low-carbon electricity. The International Energy Agency (IEA) projects a significant rise in global electricity use, making nuclear energy a crucial component in meeting net-zero targets. The UK government views the expansion of nuclear power as central to its clean energy superpower mission, enhancing energy security and reducing household bills in the long run.