Energy Too Expensive, Rules to Be Reevaluated: OpenAI Pauses the Stargate Plan in the UK
OpenAI has paused the Stargate UK project, the data center that was supposed to host around 8,000 Nvidia AI processors in the northeast of England. The company cited two concrete obstacles: the cost of energy and the British regulatory environment, which are deemed insufficient to justify a long-term infrastructure commitment.
The official statement leaves little room for short-term optimism: "We continue to explore Stargate UK and will move forward when the right conditions, such as regulation and the cost of energy, allow for long-term infrastructure investments." This language amounts to an indefinite postponement rather than a temporally restricted pause. It is worth noting that OpenAI took almost a week to release this statement: between April 3 and 8, the project appeared stalled without any public explanation, with neither OpenAI nor the operating partner Nscale available for comment, fueling speculation about ongoing negotiations. The official position on April 9, reported by Bloomberg, clarified that this is not active commercial negotiations but a suspension conditional on the improvement of the external framework.
The September 2025 Announcement and Original Plan
The project had been grandly presented in September 2025 during President Donald Trump's visit to the UK, when Sam Altman and Jensen Huang (respectively CEO of OpenAI and Nvidia) accompanied a group of American tech executives to London to announce billions in investments in British digital infrastructure. OpenAI had described Stargate UK as "an important step in the US-UK technology partnership," while the government of Keir Starmer framed the initiative as part of its strategy to make the UK a global AI hub.
The plan called for the installation of 8,000 Nvidia AI chips at a facility located at Cobalt Park, Tyneside, with operational start-up in the first quarter of 2026. That deadline has already passed without any construction site being launched. The chosen operating partner was Nscale, a London-based data center operator that had already committed $2.5 billion in the UK sector over a three-year period. With the statement on April 9, the relationship between the two companies is no longer described as an active negotiation: OpenAI has shifted the frame to "external conditions to be met," leaving the question open as to when (if) Nscale will rejoin the project in its original form.
A Blow to Starmer's AI Strategy
The British government had strongly relied on Stargate UK as a core element of its technology agenda, publicly stating that the project would "help enhance AI infrastructure in the country, transforming public services and boosting the economy." The pause comes at a delicate moment: Starmer has built much of his economic policy profile around artificial intelligence, and the withdrawal of a partner like OpenAI undermines the government's narrative.
The cost of energy is a structural issue for the UK market: industrial electricity prices in the country remain among the highest in Europe, and the consumption of a large-scale AI data center makes this issue far from marginal. On the regulatory front, OpenAI did not specify which rules are inhibiting the project, but the regulatory framework on AI in the UK is still being defined, with an approach that distinguishes itself from that of the US by focusing more on oversight and developer accountability.
The Global Picture of Stargate
However, the pause of Stargate in the UK is not an isolated episode. In March 2026, OpenAI and Oracle had already canceled the 600 MW expansion of the Stargate campus in Abilene, Texas, after negotiations fell through due to differences over funding and continuously changing capacity projections. The Abilene campus itself, inaugurated as the centerpiece of the Stargate project announced by Trump at the White House in January 2025, has faced operational interruptions due to issues with the liquid cooling infrastructure during winter, with several buildings offline for multiple days.
In February 2026, Bloomberg had already reported deep frictions among the three original partners of the project, OpenAI, Oracle, and SoftBank, over site ownership and system control issues. The collapsed negotiations led OpenAI to sign separate bilateral agreements: with Oracle for a 2 million chip data center with committed computational purchases for $300 billion over five years, and with SoftBank for a 1 gigawatt facility in Texas where OpenAI manages the design and maintains a long-term lease. These agreements operate outside the formal Stargate framework.
The Stargate project had been presented by Trump as "the largest AI infrastructure project in history" and as a tool to maintain technological supremacy in the United States. With the canceled Texan expansion, the original partnerships restructured into bilateral agreements, and now the UK pause, the global ambition of the program appears scaled back compared to the launch rhetoric. OpenAI reiterates that London hosts its largest international research hub and that support for the UK's AI strategy remains valid, but without local computational infrastructure, and with a silence lasting almost a week before clarifying its position, OpenAI's statements come out diminished.