Microsoft Pulls Out of Nscale's £2bn Essex AI Data Centre as Grid Power Slips to the 2030s

There is a particular kind of embarrassment reserved for a country that announces the future, builds the stage, invites the cameras — and then discovers it cannot plug the thing in. Britain arrived at that moment this weekend. Microsoft has walked away from Nscale's planned £2 billion AI data centre in Loughton, Essex, the site ministers once hailed as the country's largest sovereign AI project. The reason, according to The Telegraph, which broke the story on Sunday, is as mundane as it is damning: there is no electricity to run it, and there will not be for years.

Photo: Ana Las Heras via Wikimedia Commons (CC BY-SA 4.0). Server halls like these were meant to fill Nscale's £2bn Loughton campus — but the site has no power connection.

I have read a lot of corporate break-up statements in my time, and Nscale's deserves a place in the hall of fame. "We remain committed to both the Loughton project and the UK," a spokesman said, "and we are exploring alternative power sources for the site." Alternative power sources. For a data centre that was supposed to open next year. Microsoft, for its part, declined to comment — which in corporate language is usually the loudest comment of all.

Microsoft's Nscale Essex deal: what collapsed

The facts, as reported by The Telegraph and confirmed by the BBC and The Guardian, are these. Microsoft was to be the anchor tenant at Loughton — the first big committed customer, the contract that lets investors price the risk of a build. It had agreed to fund an AI supercomputer at the site. Then UK Power Networks, which runs the grid across London and the South East, told Nscale earlier this month that it could not supply enough power to the site until the early to mid-2030s. The BBC reports the data centre had been due to receive its power connection at the end of this year. That is not a delay. That is a decade.

Without Microsoft, Nscale has lost its only publicly announced customer for the Essex site, The Guardian reported. Reuters, carrying the Telegraph's reporting on Sunday, noted that Nscale filed for a US initial public offering last month — so the timing could hardly be worse. There is nothing investors like less than a flagship project losing its flagship customer weeks before a listing.

A supercomputer with no plug socket

What makes this sting is the backstory. Thirteen months ago the Loughton supercomputer was announced in front of Jensen Huang and Microsoft's leadership during President Trump's state visit to Britain, part of the £31 billion US-UK Prosperity Deal that promised tens of thousands of Nvidia's Grace Blackwell chips to Nscale. The BBC reported at the time that the Essex site would create up to 250 permanent jobs and open in 2026. Last month, The Guardian reported the launch had already slipped, possibly into the mid-2030s, with the grid connection the binding constraint. Nobody, it seems, told the press releases.

Nscale is not some flailing start-up, and that is what should worry ministers. The company has grown its contracted value from $100 million to more than $103 billion in two and a half years, Reuters reported, and it still works with Microsoft on projects in Norway, Portugal and the United States. The Essex project did not die because Nscale is weak. It died because a £2 billion building without electricity is just a building.

The UK grid queue is the real story

Strip away the corporate choreography and the story is about infrastructure. Britain wants to be an AI superpower — the government has said so repeatedly — but high electricity prices and years-long waits for grid connections are strangling the very projects meant to deliver it. The Times, covering the withdrawal on Monday, put it bluntly: the delays remain a significant barrier for AI infrastructure being built in the UK.

Nscale says the Loughton site makes up a small proportion of its $103 billion in contracted revenues with Microsoft, and that its Norway project — also behind schedule — continues. Fine. But the symbolism is hard to escape: the single largest AI investment announced for Britain, the one unveiled on a state-visit stage, cancelled because the national grid could not wire it up. If Britain cannot power its own AI ambitions, somebody else's grid will host them. That is the sentence the government will be reading over and over this week.

Sources

• Reuters — Microsoft pulls out of UK data center deal with Nscale, Telegraph reports
• The Times — Microsoft pulls out of Nscale data centre deal
• egov.mn — Microsoft pulls out of Nscale's Essex AI data centre over grid delays