Nscale loses Microsoft AI deal as power slips to 2030s

Nscale’s planned Essex AI data center will not supply Microsoft’s Azure cloud after UK Power Networks said enough grid capacity may not be available until the early-to-mid 2030s. The Nvidia-backed company had planned to install 23,040 Nvidia chips at the Loughton site and deliver 50 megawatts of computing capacity by early 2027.

Nscale announced the project last year with Microsoft, Nvidia and OpenAI. The company has since cleared the site and is exploring alternative ways to bring in power, while saying its other Microsoft contracts remain in place. The setback highlights a central constraint in the migration of bitcoin miners into AI infrastructure: securing electricity is proving as difficult as securing customers and financing.

Why it matters

Nscale grew out of Arkon Energy, a bitcoin-mining infrastructure company, and used its experience securing land and power to pursue AI computing contracts. The strategy has spread across the listed mining sector as operators seek steadier revenue than bitcoin mining can provide.

Public miners had announced more than $70 billion in AI and high-performance computing contracts, while cutting combined bitcoin holdings by more than 15,000 BTC from peak levels partly to fund construction. But the projects require far more capital. AI-ready facilities cost an estimated $8 million to $15 million per megawatt, compared with roughly $700,000 to $1 million for bitcoin mining.

Market impact

The revenue conversion gap is widening. CoinShares counted more than 4 gigawatts of AI capacity under contract across tracked miners, but only about 550 megawatts was actually billing customers. Contract backlogs exceeded $100 billion, while annualized AI revenue stood at just over $1 billion.

Britain’s data center connection queue adds another hurdle. Ofgem says proposed projects represent about 73 gigawatts of demand and is considering tougher rules for applicants that may never build. Unless Nscale secures its own power or the grid connection moves much faster, the cleared Essex site could remain idle for years.