UK AI Supercomputer Project Faces Possible 2030s Delay Over Power Shortage

British start-up Nscale announced plans for the United Kingdom’s biggest AI supercomputer, to be housed in a Loughton data centre and linked to Microsoft’s Azure cloud. The facility will initially host around 23,000 Nvidia AI chips, with a future expansion that could draw between 50 and 90 megawatts—enough electricity to match the yearly usage of about 315,000 typical UK homes, according to 2026 Ofgem data. UK Power Networks has informed Nscale that the existing grid cannot meet this demand until the early to mid-2030s, pointing to required upgrades across the national transmission system managed by National Grid and coordinated with NESO.

In response, Nscale is considering on-site power generation and is in talks with the grid operator to accelerate the connection. The delay reflects a broader European trend, where data-centre electricity consumption is projected to more than double by 2035, leading countries such as Scotland, the Netherlands and Denmark to tighten approval rules for new facilities.