Microsoft has decided not to exercise an option to more than double its computing contract with the British artificial intelligence firm Nscale in Texas, according to filings and people familiar with the arrangement.
The decision was taken several months before Nscale’s listing in September, and the existing Texas contract is unaffected. Nscale’s total contracted value of about $103bn remains in place.
What was on the table
Statements of work signed between September 2025 and April 2026 gave Microsoft the right to expand its capacity commitment at the Texas site, in a deal worth up to $43.8bn through December 2033. Exercising the option would have more than doubled that figure.
Nscale is now talking to other large customers about taking the remaining Texas capacity. Reports suggest the company is also in discussions to sell computing capacity to Anthropic in an agreement worth around $45bn, although no contract has been confirmed.
The company operates as a so-called neocloud, renting out large blocks of graphics processors to AI developers who do not want to build their own data centres. Its customers are typically model developers and large enterprises that need capacity faster than they can construct it.
The Loughton problem
The Texas decision follows Microsoft’s withdrawal from anchoring Nscale’s planned data centre at Loughton in Essex, after delays to power connections pushed the site’s supply into the 2030s.
Grid connection queues have become one of the main constraints on data centre development in the UK. Projects can secure land and planning permission but wait years for the electricity capacity they need, and the delays have pushed developers towards sites with existing connections or towards countries with faster grid access.
For Nscale, the Loughton setback and the Texas decision are related tests of the same question: whether a young company can assemble the power, buildings and chips needed to compete with hyperscalers that build their own infrastructure.
What it means for the UK’s AI ambitions
The government has made AI infrastructure a central part of its industrial strategy, promising planning reforms and grid connections for data centres that support domestic computing capacity. The Loughton delay illustrates the gap between the ambition and the delivery.
Nscale is one of the few British companies operating at scale in this market, and its contracts with Microsoft gave it credibility with investors and customers. A decision not to expand does not invalidate the business, but it removes a signal that demand was assured.
The company’s listing in September was seen as a test of investor appetite for AI infrastructure outside the United States. Its shares have since traded in line with a sector that has been volatile as investors question how quickly the revenue from AI computing will arrive.
The wider context
Demand for AI computing has been growing faster than supply, but the market is not uniform. Hyperscalers are signing long-term contracts while also building their own capacity, and they have become more selective as they work out how much they need.
Neoclouds occupy a middle position: they offer speed and flexibility, at a price, to customers who cannot wait for a hyperscaler’s allocation. When the hyperscalers have spare capacity, the neoclouds’ advantage narrows.
Microsoft’s decision is therefore less a verdict on Nscale than a reflection of its own capacity planning. The question for the UK is whether the next tranche of demand is served from British sites or from abroad, and on current evidence the grid is the binding constraint.
