Microsoft has withdrawn from an agreement with British cloud infrastructure developer Nscale for a major artificial intelligence (AI) data centre in Loughton, Essex, according to a report published on Sunday, October 18, 2026. The decision threatens to complicate plans for one of the United Kingdom’s largest proposed AI computing facilities, with concerns over electricity availability highlighting the infrastructure challenges facing the industry.
The project was announced in 2025 and was expected to become a significant part of the UK’s expanding AI infrastructure. Microsoft had been identified as one of Nscale’s major customers, alongside AI developer Anthropic, according to documents filed by Nscale ahead of a planned initial public offering in the United States.
The UK’s Guardian newspaper reported that concerns about power supplies contributed to the setback, with the project facing difficulties securing sufficient electricity capacity for its planned operations. The facility had been expected to open in 2027, but delays to grid connections have raised questions about whether the original timeline remains achievable.
Microsoft and Nscale did not immediately respond to Reuters’ requests for comment outside regular business hours following the initial report. Microsoft’s reported withdrawal therefore leaves important questions about the precise reasons for terminating the agreement and the future commercial arrangements for the site.
Nscale provides computing infrastructure, data centres and software used to train and operate AI models. The company has expanded rapidly as technology firms compete to secure the computing capacity required to support increasingly sophisticated AI systems.
Reuters reported that Nscale had grown from $100 million to more than $103 billion in total contracted value in approximately two and a half years. The company’s reliance on a relatively small number of major customers makes the reported loss of a Microsoft agreement an important development for investors assessing its future growth prospects.
The setback also highlights a wider challenge for the UK, where electricity grid capacity and connection delays have become obstacles to proposed data centre developments. AI facilities require substantial and reliable power supplies to operate large numbers of processors, making access to electricity a central consideration in investment decisions.
For technology companies, delays in securing power can affect construction schedules, operating costs and the timing of new computing services. Developers may also need to reconsider project locations or explore alternative energy arrangements when grid connections cannot be delivered quickly enough.
Nscale’s next steps will be closely watched as the company works to advance its UK expansion plans and maintain investor confidence. The key developments to monitor are whether the Essex project secures an alternative major customer, obtains a workable electricity supply and receives a revised construction timetable.
