This article was published in our nuclear briefing, Nucleus.
The UK has entered a new phase for its civil nuclear sector. Driven by legally binding climate targets and an urgent need for energy sovereignty, the Department for Energy Security and Net Zero (DESNZ) published its Advanced Nuclear Framework earlier this year.
The framework marks a decisive shift away from the traditional model of state-backed, large-scale nuclear plants, towards enabling smaller, factory-fabricated, private sector-led advanced nuclear projects. It outlines government commitments to provide targeted support, including revenue stabilisation mechanisms and risk protections, and to reforms of the planning and regulatory systems, intended to reduce barriers and delays. Through closer collaboration between industry, government, and regulators, DESNZ aims to make the UK one of the most attractive destinations for nuclear innovation, supporting economic growth, job creation, and the transition to a clean, secure energy future.
The framework also introduces the UK Advanced Nuclear Pipeline, a structured process for evaluating and supporting privately led advanced nuclear projects. The framework aims to give developers and investors a clear and predictable operating environment, by streamlining the planning, regulatory and financing pathways.
The pipeline will function as an official registry of credible, privately led Advanced Modular Reactor (AMR) projects. AMRs plan to use novel (accident-tolerant) fuels, neutron spectrums, and/or coolants to provide high-temperature heat and low-carbon electricity. These features unlock specialised non-grid markets, including industrial process heat, hydrogen generation and dedicated sovereign power for AI data centres.
To capture this market, interested developers can demonstrate project maturity by applying to enter the Advanced Nuclear Pipeline. Applications then move through a three-stage process, jointly managed by DESNZ and Great British Energy Nuclear:
The pipeline does not offer government-grant funding and is not a public procurement of new nuclear capacity. Even so, entry to the pipeline gives developers an opportunity to build momentum, de-risk projects, clear market barriers, and protect their intellectual property. It offers a number of commercial benefits to developers:
+ Unlocking global institutional capital
Admission to the pipeline confers a formal “statement of limited, in-principle, endorsement”. While not a formal regulatory approval or investment advice, the statement signals to relevant institutional equity and debt partners that the UK government considers the project a credible delivery prospect. This in turn, could help to unlock private investment for early-stage development and master planning.
+ Access to targeted revenue support and HILP protections
Crucially, membership allows developers to potentially negotiate bespoke revenue-stabilisation models directly with DESNZ, including customised contracts for difference. It additionally enables negotiations on high-impact, low-probability (HILP) protections, and state-backed insurances; designed to shield decades-long private capital investments from regulatory shifts, political change, or uninsurable systemic risks.
+ Engaging the National Wealth Fund
The National Wealth Fund (NWF) manages over £27 billion in strategic capital and has a dedicated nuclear investment team. It is positioned to act as a catalytic co-investor alongside private funds, deploying debt, equity, and hybrid structured instruments to bridge capital-intensive deployment phases. The framework treats the pipeline as a key funnel for NWF project reviews.
+ Clearing siting and property hurdles
A historic roadblock for nuclear developers has been a commercial catch-22: landowners refuse to grant options on premium nuclear licensed land without proof of project viability, yet developers cannot demonstrate viability without a site. The pipeline process, and particularly the PRA, offers an objective benchmark capable of breaking that deadlock. It supports land acquisition negotiations with public land managers, such as the Nuclear Decommissioning Authority, which is actively repurposing hubs like Pioneer Park and Trawsfynydd for advanced civil deployment.
+ Government-backed concierge navigation
Successful projects gain access to the newly established Advanced Nuclear Business Engagement Unit inside DESNZ. Operating as a concierge service, the unit aims to act as a dedicated intermediary, to guide developers through Office for Nuclear Regulation licensing procedures, the planning requirements under the updated National Policy Statement (EN-7), and if appropriate, the grid connection pipeline managed by the National Energy System Operator.
With these opportunities come compliance challenges. AMR models must account for domestic fuel limitations - with a stated preference for the uranium fuel cycle and noting the UK Government’s HALEU Future Fuels Programme. Developers must also build robust safety cases and engage with the Export Control Joint Unit, to protect dual-use technology and IP transfers.
The application window is open as a continuous, rolling process. Given resource limitations, DESNZ retains the right to prioritise projects most closely aligned with the UK national interest, for example those with an increased UK content. Therefore, proactive structuring of commercial, engineering, and financial documentation will be key to securing early-mover advantage. Our Nuclear Team can support applicants with any submissions, as well as being available to help negotiate agreements, and guide AMR projects through the pipeline.
