Microsoft has pulled out of a data center deal with British cloud provider Nscale, terminating its agreement for a site in Loughton, Essex, according to a report by Britain’s Telegraph newspaper carried by Reuters on Sunday. Microsoft is one of Nscale’s two largest customers, which makes the exit a significant test for a young company that has built its name on the AI infrastructure boom.
Nscale provides infrastructure — including compute, power and data centers — along with software for training and running AI models. It is backed by Nvidia and competes against better-known American rivals including CoreWeave, Nebius, Crusoe and Lambda.
The power problem
The Telegraph did not specify why Microsoft withdrew from the project, and Microsoft did not immediately respond to a Reuters request for comment outside regular business hours. But the reporting points to a familiar bottleneck: electricity.
According to the Telegraph, Nscale had faced repeated delays with the Loughton project, and national power grid officials had told the company they did not expect a power supply for the data center until the 2030s. A data center that cannot be powered for most of a decade is, for a customer planning AI capacity, a very different asset from the one that was contracted. Capacity planners buy delivery dates as much as buildings; a site whose power arrives in a different decade changes what the agreement is worth, regardless of how the original contract was written.
Nscale says the rest of its book is untouched
Nscale pushed back on any suggestion that the Loughton setback reflects a wider problem. “Our relationship with Microsoft remains strong and long-term, and this unfortunate London-wide grid issue has no impact on our other contracts,” a spokesperson told Reuters.
“We remain committed to both the Loughton project and the UK, and we are exploring alternative power sources for the site, in addition to other expansion sites in the UK,” the spokesperson added. In other words, the company is framing the termination as a site-specific power failure, not a loss of confidence from its largest customers.
An IPO makes the timing awkward
The timing matters because Nscale filed for an initial public offering in the United States last month. According to its prospectus, Microsoft and Anthropic were expected to be its major customers — the kind of anchor names a newly public infrastructure company points to when investors ask who will fill its data centers.
The growth story in that filing is steep. Reuters reports that Nscale has scaled from $100 million to more than $103 billion in total contracted value in just two-and-a-half years since its launch. Numbers like those depend on projects actually being built and powered on schedule, which is precisely what Loughton, on the reported grid timeline, could not offer.
What this does — and does not — show
Nothing in the reporting suggests Microsoft explained its decision, and readers should be careful about filling that silence. What is documented is narrower: a termination, a project with repeated delays, and a grid connection that officials reportedly did not expect until the 2030s.
Even so, the episode underlines a shift in the AI race. The scarce resource is increasingly not chips or capital but powered land — sites where the electricity actually arrives on a schedule a customer can plan around. Nscale’s own response concedes the point implicitly: its next move at Loughton is to hunt for alternative power. Whether that search, and its other UK expansion sites, can reassure the customers named in its prospectus is the question its IPO audience will now be asking.
