Stargate UK: Why is OpenAI Halting its AI Data Centre Deal?
OpenAI has officially paused its Stargate UK infrastructure project.
The AI developer cited high energy costs and ongoing regulatory uncertainty as the primary drivers behind the decision to suspend the data centre rollout.
Announced in September 2025 alongside hardware partners Nscale and NVIDIA, the initiative was designed to significantly enhance the UK's sovereign computing capabilities.
At the time, OpenAI CEO Sam Altman said: “The UK has been a longstanding pioneer of AI, and is now home to world-class researchers, millions of ChatGPT users and a government that quickly recognised the potential of this technology.
“Stargate UK builds on this foundation to help accelerate scientific breakthroughs, improve productivity and drive economic growth.
“This partnership reflects our shared vision that with the right infrastructure in place, AI can expand opportunity for people and businesses across the UK.”
OpenAI’s scale back is a notable shift for an initiative previously viewed as a cornerstone of the national technology strategy.
The Cobalt Park pause
The facility was set for development at Cobalt Park in North Tyneside, among other unconfirmed sites.
Initial plans detailed the deployment of up to 8,000 GPUs during the first quarter of 2026.
This capacity was projected to expand to 31,000 GPUs over time to support specialist workloads across regulated industries, finance and national security.
Despite earlier enthusiasm, progress has abruptly stopped.
High industrial electricity prices – which remain among the most expensive globally – and grid connection delays have created substantial hurdles for operators seeking to establish new sites.
Nscale declined to comment on the project suspension when approached, while NVIDIA has also remained silent on the operational shift.
The North Tyneside installation was designed to be considerably smaller than OpenAI's domestic Stargate initiative in the United States, which involves a US$500bn infrastructure commitment over four years.
An OpenAI spokesperson confirmed the strategic pivot while reiterating a broader commitment to the region.
"We see huge potential for the UK's AI future," the spokesperson said in a statement.
"London is home to our largest international research hub and we support the government's ambition to be an AI leader."
Copyright concerns
Alongside power pricing, regulatory ambiguity has stalled the tech firm's infrastructure ambitions.
Industry sources indicate the developer is concerned about the legislative environment regarding copyright laws and training data.
Earlier this year, lawmakers reviewed potential changes to copyright rules that would have introduced a broad exception with an opt-out mechanism for creators.
This framework would have simplified the process for tech companies to use existing media to train generative models.
Following significant backlash from the creative sector, a government report published in March noted that public consultation respondents overwhelmingly rejected the proposal.
Without clarity on how models can legally ingest copyrighted material, major developers appear hesitant to commit extensive physical resources.
Government response
The suspension of the North East site represents a setback for the national technology agenda.
The September 2025 agreement originally formed part of a broader £31bn (US$41.6bn) investment package championed as a catalyst for domestic economic growth.
Technology Secretary Liz Kendall previously highlighted that the sector was expanding 23 times faster than the wider economy.
A UK Government spokesperson defended the country's track record, noting that the tech space has secured more than £100bn (US$134.2bn) in private investment under the current administration to deliver jobs and new opportunities.
"Our focus is on continuing to create the right conditions for investment in the UK's AI and data centre infrastructure," the spokesperson said.
"We are continuing to work with OpenAI and other leading AI companies to strengthen UK compute capacity."
Future operations
OpenAI maintains that it has not entirely abandoned the prospect of hardware expansion in the UK. The company continues to negotiate with Nscale regarding future collaborations.
"AI compute is foundational to that goal – we continue to explore Stargate UK and will move forward when the right conditions such as regulation and the cost of energy enable long-term infrastructure investment," the OpenAI representative stated.
The business intends to proceed with alternative commitments established in a July 2025 Memorandum of Understanding regarding the integration of frontier models within public services. The workforce will also remain a priority.
"In the meantime, we are investing in talent and expanding our local presence, while also delivering on the commitments under our MOU with the Government to adopt frontier AI in UK public services," they added.
