Power shortage stalls UK's flagship Nscale AI centre
A £2bn Nvidia-backed data centre anchored by Microsoft cannot open on time because Britain's grid cannot deliver the required electricity, exposing a critical flaw in Europe's AI growth strategy.
Nscale, an AI firm backed by Nvidia, has the money, the planning permission, and a 90-megawatt grid connection for its £2bn data centre in Essex. It also has Microsoft signed as its anchor tenant. However, the company cannot switch the facility on next year because the electricity simply will not arrive in time.
Rather than wait, Nscale is now looking to generate its own power on-site, reportedly talking to a California fuel-cell maker. “We remain fully committed to the Loughton project,” a spokesperson said. The company is not lacking financial momentum; it raised a $900m credit facility weeks ago and grew its headcount by 121% in the first half of 2026.
Nscale’s predicament is becoming standard across Britain, where grid-connection times are the single largest brake on new data centres. In 2025 alone, more than a quarter of planned data-centre capacity slipped, and some projects face waits approaching a decade. To bypass this queue, industry data shows more than 100 UK projects are now considering gas generation, creating a paradox for a government trying to clean up its power supply.
Sir Keir Starmer’s government has designated data centres as critical national infrastructure and a core pillar of its economic growth plan. The physical grid, however, is failing to support that political ambition. “Britain’s dreams of data centre sovereignty will disappear if we don’t get a grip on the grid,” warned Taco Engelaar of the infrastructure firm Neara. The strain is already pulling down climate targets, with forecasters expecting just 83% clean power by 2030, well short of a 95% goal.
This bottleneck carries heavy implications for the broader European tech economy, where sovereign-AI plans face identical physical limits. New York has frozen new data centre construction entirely, and Scotland’s governing party is pushing for a similar moratorium. For investors betting on European technological independence, the Essex delay proves a fundamental constraint: unlike capital, electricity cannot be raised in an afternoon.
