Microsoft Reportedly Withdraws from Nscale’s Power-Delayed Loughton AI Data Center Deal in the UK

A. Key facts

Reuters reported on October 18, 2026, citing The Telegraph, that Microsoft recently terminated its agreement for Nscale’s Loughton, Essex data center. Microsoft is one of Nscale’s two largest customers.

The Telegraph did not specify the reason for Microsoft’s withdrawal, but said the project had faced repeated delays and grid officials had told Nscale that power for the data center might not be available until the 2030s.

Microsoft did not immediately respond to Reuters’ weekend request for comment. Nscale said its Microsoft relationship remains strong and long term, that the London-wide grid issue does not affect its other contracts, and that it remains committed to Loughton while evaluating alternative power sources and other UK expansion sites.

Nscale’s official September 2025 announcement described Loughton as 50MW of AI capacity, scalable to 90MW, with 23,040 NVIDIA GB300 GPUs planned for delivery in Q1 2027. As checked today, Nscale’s website still lists Loughton as designed to scale to 90MW but provides no operational date.

B. Business significance · InveDeck interpretation

The management significance is that a power and grid-connection problem has progressed from an announced project risk to delayed delivery and the loss of an anchor customer. It demonstrates that GPU availability and AI demand alone cannot monetize data center capacity; power availability and interconnection timing determine the quality of RPO and backlog.

For Microsoft, the event means a specific UK Azure AI capacity deployment may need to be delayed or relocated. However, Nscale said other Microsoft contracts are unaffected, and there is no evidence that Microsoft has reduced total AI capex or ended the broader Nscale relationship.

For Nscale, losing the anchor customer at its flagship UK project matters for IPO-era contract-value credibility. Without alternative power or a replacement customer, the return profile of Loughton and the UK sovereign-AI infrastructure plan could be delayed for years.

C. Quantifiable impact

The disclosed project scope was an initial 50MW, scalable to 90MW, with 23,040 NVIDIA GB300 GPUs. The GPU count equals about 11.5% of the approximately 200,000-GB300 global Microsoft rollout Nscale announced in October 2025. This is only a unit comparison, not a measure of contract value or Microsoft’s total AI capacity.

The Loughton contract value, Microsoft prepayments, refunds, termination fees, delay credits and reduction to Nscale backlog have not been disclosed, so the revenue, margin, free-cash-flow and RPO effects cannot be quantified.

It is also unknown whether the 23,040 GPU orders were canceled or will be moved to another Nscale site or Microsoft data center. The event should therefore not yet be treated as a confirmed revenue loss for NVIDIA or Dell.

D. Link to earnings and expectations

In Microsoft’s fiscal Q4 2026, Microsoft Cloud revenue was $59.3 billion, up 27%, and Azure revenue grew 43%. Commercial RPO rose 84% to $678 billion, while operating cash flow was $55.4 billion and free cash flow was $19.6 billion.

On the prior earnings call, Microsoft said it continued investing in data center and AI infrastructure and that, outside the effect of a building useful-life change, its calendar 2026 capex investment expectations remained unchanged. This report has not produced an official guidance change.

The event is therefore better interpreted as a realized site-delivery and external neocloud-partner execution risk within Microsoft’s aggressive investment program, rather than evidence that Microsoft’s AI demand or companywide capex thesis has weakened.

E. Industry and supply chain · InveDeck interpretation

The timing of Loughton deliveries for NVIDIA GB300 systems, HBM, Dell-integrated infrastructure, networking, storage and direct-liquid cooling is now uncertain. If the capacity is transferred to another site, the effect may be a geographic or vendor shift rather than destruction of industry demand.

For the UK data center sector, the incident confirms grid interconnection as a primary constraint on attracting AI investment. A need for alternative power could support on-site generation, long-term PPAs, fuel cells, gas turbines or energy storage, but Nscale has not disclosed a specific solution.

Power-secured European and U.S. sites operated by Nscale rivals such as CoreWeave, Nebius, Crusoe and Lambda, as well as major cloud providers, may gain relative value. The signal is more about competition for powered capacity and workload relocation than about the disappearance of AI server demand.

F. What to watch next

• Whether Microsoft formally confirms the termination, its reason and its exact scope
• The specific Loughton SOW, prepayment refunds, termination fees, delay credits and reduction to Nscale backlog
• Whether the 23,040 NVIDIA GB300 GPUs remain ordered, are canceled or are reallocated, and the resulting Dell delivery schedule
• Nscale’s alternative power source or UK site, revised operational target and incremental capex requirement
• Microsoft’s next capex and AI-capacity commentary and any Nscale IPO amendments to customer concentration or contract value