Full Breakdown
Microsoft Withdraws from Loughton AI Supercomputer Project
By Drooid · · How we work
Power Grid Constraints Undermine the Initiative
The project’s viability hinged on securing a 50 MW power connection, expandable to 90 MW, to support 23,040 Nvidia GB300 GPUs. UK Power Networks warned that the required transmission capacity is not expected until the 2030s, citing obligations under the Utilities Act that prevent discussion of individual connections. The grid shortfall reflects a broader surge in data-centre demand: connection requests rose from 41 GW to 125 GW within a year, with datacentres accounting for at least 80 GW of that growth. Ofgem has proposed charging developers for connection requests to curb speculative projects that clog the queue.
Official Statements & Responses
- A UK Power Networks spokesperson said the company “cannot discuss individual connections” but noted many datacentres are awaiting work on the national transmission network it does not own.
- Microsoft did not respond to a request for comment.
Verbatim Quotes
- “We remain committed to both the Loughton project and the UK and we are exploring alternative power sources for the site, in addition to other expansion sites in the UK. Our relationship with Microsoft remains strong and long-term, and this unfortunate London-wide grid issue has no impact on our other contracts,” — Nscale
Data, Statistics, and Impact
- Planned hardware: 23,040 Nvidia GB300 GPUs.
- Power design: 50 MW baseline, up to 90 MW possible.
- Grid demand growth: from 41 GW to 125 GW in less than a year; datacentres now represent at least 80 GW of that demand.
- The grid bottleneck has already forced some UK developers to consider gas-powered generation, while community opposition has risen at sites such as Google’s Waltham Cross facility.
The episode highlights that while billions are being allocated to AI infrastructure, the practical challenge of connecting massive compute facilities to an overstretched electricity network may delay national AI ambitions by a decade.
