Microsoft has pulled out of a deal to support Nscale’s planned AI data centre in Essex, a setback for what had been billed as the UK’s largest such project.¹

The decision followed a warning from local electricity-grid officials that the site would not receive power until the 2030s. For a facility intended to serve the power-hungry AI boom, that timetable turned a flagship plan into a long wait.²

The withdrawal does not, however, mean the site has been abandoned. Construction is still expected to proceed without Microsoft’s backing, according to the account of the deal’s collapse.²

Nscale’s position is notably more defiant than Microsoft’s retreat. The British company says its partnership with Microsoft on other projects “remains strong,” framing the Essex reversal as a problem for one development rather than a rupture in the wider commercial relationship.²

The episode leaves an awkward contrast. Microsoft has treated the delayed grid connection as reason enough to walk away; Nscale is pressing on, betting the project can outlast the power bottleneck. The immediate loser is the timetable for a major AI hub — and the broader warning is clear: data-centre ambitions can be announced quickly, but electricity infrastructure moves on a far slower clock.