Microsoft Exits Nscale’s UK Data Centre Project Over Power Supply Delays

Microsoft has withdrawn from an agreement to become the principal customer at a planned AI data centre in Loughton, Essex, developed by British infrastructure company Nscale. The decision, reported on October 18 and 19, 2026, follows delays in securing a reliable electricity supply for the facility. The project was originally expected to become operational much sooner, supporting Microsoft’s Azure cloud computing services with substantial AI computing capacity. However, electricity network officials reportedly informed Nscale that a grid connection might not be available until the 2030s. Microsoft said its decision concerned this particular site and stressed that its wider relationship with Nscale remained strong. The withdrawal highlights how power shortages and infrastructure delays are becoming major obstacles to the expansion of AI computing facilities.

The Loughton project was announced in 2025 as part of a wider effort to establish the United Kingdom as a major centre for artificial intelligence infrastructure. Microsoft had planned to use approximately 23,040 Nvidia GB300 graphics processing units, providing around 50 megawatts of computing capacity for its Azure services. The development was also associated with Microsoft’s broader commitment to invest billions of dollars in British AI infrastructure. However, building a data centre requires more than securing land, advanced processors and financing. Facilities of this scale need dependable electricity supplies, cooling systems, network connections and other infrastructure capable of operating continuously. The delay in obtaining grid power undermined the original timetable, making it difficult for Microsoft to rely on the site for its planned computing needs.

Nscale has said it remains committed to the Loughton development and is exploring alternative energy sources, alongside opportunities to expand at other locations in the United Kingdom. The company also stressed that the setback would not affect its other contracts with Microsoft. Nscale specialises in providing AI computing infrastructure, including data centres, Nvidia GPUs and software used to train and operate artificial intelligence models. Its business has expanded rapidly as technology companies seek more computing power for increasingly sophisticated AI systems. According to Reuters, Nscale’s contracted business value has grown from approximately $100 million to more than $103 billion in two and a half years. However, the company must still deliver the facilities and computing capacity required by its customers for those commitments to translate into actual revenue.

Microsoft’s withdrawal also comes at a sensitive time for Nscale as it prepares for a potential stock market listing in the United States. The company has reportedly been targeting a valuation of around $35 billion, although the precise value investors may ultimately assign to the business remains uncertain. Losing an important customer at a flagship project could raise questions about the company’s ability to deliver infrastructure on schedule and convert its large contract backlog into revenue. Investors are increasingly examining the financial risks associated with AI infrastructure providers, particularly businesses that borrow heavily to purchase expensive processors and construct data centres. If projects are delayed, companies may face financing costs without receiving the expected income. Nscale’s ability to secure alternative power arrangements and maintain confidence in its remaining customer commitments will therefore be important to its future plans.

The incident exposes a wider challenge facing Britain’s ambitions to become a global leader in artificial intelligence. Demand for AI data centres is increasing rapidly, but electricity networks cannot always provide new connections as quickly as technology companies need them. Reuters reported that grid connection bottlenecks have delayed some British data centre developments by years, with certain projects facing potential waits extending as far as 13 years. Without sufficient power, even facilities equipped with advanced Nvidia processors cannot operate at their intended capacity. The situation may encourage developers to investigate dedicated power generation, energy storage and alternative locations where electricity connections can be secured sooner. For Microsoft, the withdrawal allows it to reconsider how it obtains computing capacity for Azure, while Nscale must find a practical way to keep its Loughton project viable. The outcome will demonstrate whether Britain’s infrastructure can keep pace with the rapidly growing demands of the AI industry.