OpenAI Hits Pause On ‘Stargate UK’ AI Data Center Plan Over Energy Costs And Regulation

OpenAI has paused its planned Stargate UK data centre initiative, a flagship AI infrastructure project designed to bolster the United Kingdom’s sovereign computing capabilities, according to a report from Bloomberg.

Stargate UK, developed in partnership with NVIDIA, was announced in September and framed as a way for the UK government to run leading AI models on infrastructure located inside the country. The goal was to support “specialist use cases where jurisdiction matters,” keeping sensitive workloads on domestic soil rather than relying solely on overseas cloud resources.

Despite that ambition, OpenAI is now putting the project on hold, with the company citing high energy costs and regulatory issues as the reasons for stepping back for now.

In a statement provided to the publication, OpenAI said it still sees “huge potential for the UK‘s AI future” and described AI compute as “foundational to that goal.” The company added that it continues “to explore Stargate UK” and intends to move forward “when the right conditions such as regulation and the cost of energy enable long-term infrastructure investment.”

The project emerged after OpenAI formed a strategic partnership with the UK government months before the formal Stargate UK announcement. The data centre effort was meant to be a physical embodiment of that collaboration, giving the government direct access to high-end AI computing inside its own jurisdiction.

For now, that vision is on pause rather than cancelled. OpenAI’s statement signals the company is tying any future restart to clearer, more favourable regulatory conditions and more sustainable energy economics for power-hungry AI infrastructure.

When it unveiled Stargate UK, OpenAI said it would offer similar arrangements to other governments that want to grow their own sovereign AI capabilities. That work sits under OpenAI’s “OpenAI for Countries” initiative.

The initiative is also working with Australia, Greece, the United Arab Emirates, Slovakia, Kazakhstan and other regions. It is not clear from the available information whether the pause affecting Stargate UK alters any timelines or plans in those countries, or whether those efforts face similar energy and regulatory constraints.

For the UK, the move underscores how energy pricing and evolving AI regulation are now central to decisions about where and how next-generation data centres get built. OpenAI maintains that the country remains a promising market for advanced AI, but its biggest UK infrastructure bet will wait until the underlying conditions improve.