ANALYSIS Three distinct credit signals in a single weekend point to a structural repricing of AI infrastructure risk: a hyperscaler walking away from a flagship facility, bond yields on neocloud debt climbing past 15%, and an elite AI lab offering double-digit returns just to secure chip financing. Taken together, the evidence suggests the capital markets that underwrote the AI buildout are now demanding materially higher compensation for the delivery and demand risks embedded in it.
Why it matters
The AI infrastructure boom has been financed largely through debt, and the cost of that debt is rising fast. CoreWeave's bond yield now tops 15%3,6. Some Oracle corporate bonds have risen above 8%, and some of its debt trades near 80 to 90 cents on the dollar. Oracle has accumulated more than $125 billion in debt to finance AI cloud infrastructure, against a book value of around $67 billion. Anthropic is offering Blackstone a 10%-plus yield on a proposed $9 billion investment that would form part of a $60 billion debt package to buy Google TPUs5. These are not isolated data points; they describe a market-wide reassessment of whether AI infrastructure can be built, powered, and filled with paying customers on the timelines that justified the original borrowing.
The big picture
Microsoft's cancellation of its anchor-tenant deal with Nscale at a planned data center in Loughton, Essex, crystallizes the delivery problem. Microsoft had agreed to rent 23,000 Nvidia AI chips at the facility4. But UK grid officials told Nscale they would not be able to provide adequate power to the site until the 2030s2. The project, which the UK government had described as the "largest UK sovereign AI datacentre" when it was announced in 2025, was already beset by delays; the Guardian had reported in March that the location was still an operational scaffolding yard1.
Nscale's troubles extend beyond Essex. Its flagship data center in Glomfjord, Norway, which serves ByteDance, is six months behind schedule, with only 6.4 megawatts of a planned 30 megawatts operating7. Cooling-system leaks, a fire, and construction setbacks have hampered that facility. Delays have already generated millions of dollars in contractual penalties, and some agreements allow customers to cancel portions of their commitments if capacity arrives late. The company holds more than $103 billion in contracts that it must convert into operating infrastructure, and it is seeking to raise up to $3 billion in an IPO as soon as October at a valuation target of as much as $35 billion.
A spokesperson for Nscale told The Telegraph that the company's relationship with Microsoft remains "strong and long-term" and that the grid issue has no impact on several other contracts it has signed with Microsoft. "We remain committed to both the Loughton project and the U.K., and we are exploring alternative power sources for the site, in addition to other expansion sites in the U.K.," the spokesperson said.
ANALYSIS The Nscale episode exposes a feedback loop that lenders are now pricing in. Data centers require firm power commitments before they can deliver contracted capacity. When grid connections slip, construction timelines extend, penalties accrue, and anchor tenants reconsider, all while debt service continues. Microsoft's willingness to walk away from a deal it had publicly backed alongside the UK government suggests that even the largest hyperscalers will not wait indefinitely for power that may not arrive on schedule.
Oracle's $664 billion backlog includes a $300 billion deal with OpenAI, and investors have become increasingly skeptical about whether OpenAI can afford to honor that agreement. ◆ Oracle's debt load of more than $125 billion against $67 billion in book value leaves little margin if a single large customer underperforms.
Anthropic's willingness to offer Blackstone a yield above 10% on a $60 billion debt package illustrates how expensive capital has become even for top-tier AI labs. High borrowing costs complicate Anthropic's goal of achieving investment-grade status, which would ordinarily be a prerequisite for debt of that scale.
What's next
Nscale's IPO filing targets a listing on the New York Stock Exchange under the symbol NSCL, with a raise of up to $3 billion as soon as October. The Microsoft cancellation and the Norway delays will now feature prominently in investor due diligence. Oracle reports its next quarterly results with a $664 billion backlog that the market is already discounting. And the broader AI debt market faces a test: CoreWeave's 15%-plus bond yields set a benchmark that other neocloud borrowers will struggle to undercut.