TL;DR

Sky News reported on 1 November that National Grid had signed, in the preceding week, to buy more than 70 acres at Dorman Point on Teesworks, for a substation tipped as Britain’s biggest. Sources told Sky it would feed a neighbouring data centre likely to be Europe’s biggest, with no operator yet named. Power is the constraint that recently cost another UK project its anchor tenant, which is why a land deal counts as news.

The land purchase is on the record. National Grid’s head of lands, Matt Pearce, called it “an important step forward” in a statement, while Teesworks chairman Chris Musgrave said the focus now turns to remediation and preparing the ground for handover. The Guardian, following Sky’s report, gives the area as 29.5 hectares.

The data centre itself is less settled. Its scale and its tenants come from unnamed sources. Sky says US frontier labs and hyperscalers have shown significant interest, and that one industry source expects a preferred partner to be chosen within months.

Why grid access decides this

Ben Houchen, the Tees Valley mayor, told Sky that access to power is “the biggest problem” for anyone building in Britain, and that “up to 3.2GW of capacity” would let the site compete with the US and the Gulf. That figure is his claim, and neither report sets out when it would be available.

The contrast with the south of England is direct. The Observer noted on 30 October that Microsoft walked away as anchor tenant at Nscale’s Loughton project after UK Power Networks said sufficient supply would not arrive before the early to mid-2030s. Our report on the Loughton exit covered that episode.

The Teesworks site brings its own politics. Sky notes that the 2,500-acre estate, 10% publicly owned through the South Tees Development Corporation, has faced questions about what its owners have earned. The Guardian points to a planning application for a project of nearly 500,000 sq metres, and to last year’s reports that ministers had picked the location for an AI data centre.

Looking Forward

Two things come next: choosing a preferred partner and remediating the land. Sky’s sources name Balfour Beatty as the likely substation builder, with Steel River Power, the private network operator on the estate, also involved; the Guardian says both were approached for comment.

In our view, the sovereignty framing needs watching. One source told Sky that Teesside is the “only real opportunity” for true sovereign AI, yet the only interest that report describes comes from US-based companies. A British site running on a US tenant’s models would satisfy the data-location argument Houchen makes, but not necessarily the wider one about reducing reliance on overseas technology.