Full Breakdown
Microsoft Terminates Anchor Tenant Agreement for Nscale’s Loughton AI Data Center
By Drooid · · How we work
Core Event: Termination of the Loughton Deal
On October 18, Microsoft announced it was withdrawing from its anchor-tenant agreement with British AI infrastructure provider Nscale for the planned data centre in Loughton, Essex. The termination leaves Nscale without its only publicly announced customer for the flagship UK site.
Background & Context
Nscale, a “neocloud” firm backed by Nvidia and other tech investors, filed for a New York Stock Exchange listing in September 2026, seeking to raise up to $3 billion. The Loughton project was highlighted by the UK government in 2025 as the nation’s largest sovereign AI data centre and was slated to host 23,040 Nvidia GB300 GPUs for Microsoft Azure services beginning in the first quarter of 2027. Earlier reporting noted construction delays and that the site remained an operational scaffolding yard.
Data & Statistics
- Nscale’s prospectus lists $103 billion in total contract value, with $2.6 billion classified as active as of mid-2026.
- Microsoft and Anthropic together account for roughly 85 % of Nscale’s contracted revenue; Microsoft’s statements of work are valued at about $43.8 billion through December 2033.
- The Loughton facility was planned for 50 MW of power, expandable to 90 MW; grid operators have indicated a reliable connection may not be available until the early-to-mid 2030s.
- Nscale’s flagship Norway site is operating at 6.4 MW of the intended 30 MW capacity, six months behind schedule.
Official Statements & Responses
Nscale’s spokesperson said the company remains committed to the Loughton project and is exploring alternative power sources, adding that the grid issue does not affect other contracts. The spokesperson also emphasized that the relationship with Microsoft remains strong and long-term. Microsoft declined to comment on the termination.
Why It Matters / Impact
The loss of the anchor tenant undermines Nscale’s IPO narrative, which relied on the high-profile UK project to demonstrate market traction. Investors now face a concrete example of the “grid risk” analysts have flagged across the AI-infrastructure sector, where large-scale data-centre builds can be stalled by electricity-supply constraints. The setback also reduces the UK’s near-term AI compute capacity, as the Loughton site was slated to deliver a significant portion of Azure services in the region.
Timeline
- Late 2025 – early 2026 – Microsoft signs multiple statements of work with Nscale, valued at $43.8 billion.
- September 2026 – Nscale files IPO prospectus, discloses 85 % contract concentration with Microsoft and Anthropic.
- October 18 2026 – Microsoft withdraws from the Loughton agreement; Nscale confirms continued commitment and explores alternative power solutions.
Conflicting Reports & Gaps
All sources attribute the termination to power-supply delays, but no party has provided a detailed technical explanation or a confirmed timeline for when grid capacity might become available. The precise financial impact of losing the Loughton anchor tenant on Nscale’s IPO valuation remains undisclosed.
What’s Next
Nscale continues to target a New York Stock Exchange listing that could raise up to $3 billion as early as this month. The company is evaluating alternative power options for Loughton and pursuing other expansion sites within the UK. Market observers will watch how the IPO proceeds in light of the recent contract loss and broader sector concerns about AI-infrastructure financing.