Microsoft canceled a deal to serve as the anchor tenant at Nscale’s planned data center in Essex, UK. The agreement involved the rental of 23,000 Nvidia AI chips.

Repeated development delays and power grid connection issues prompted the termination. The cancellation threatens Nscale’s plans for a multibillion-dollar public listing.

The private equity-backed startup viewed the project as a cornerstone of its growth strategy. This setback also impacts the UK’s broader ambition to lead in artificial intelligence.

Infrastructure challenges highlight the difficulty of meeting the massive power demands required for AI expansion.