Microsoft Abandons Major UK AI Data Centre Project Over Electricity Supply Delays

Microsoft has withdrawn from a major artificial intelligence data centre project in Loughton, Essex, dealing a significant setback to the UK government’s ambitions to establish the country as a leading hub for AI technology.

The project, developed by British AI infrastructure company Nscale, was announced in 2025 and promoted by the government as the UK’s largest sovereign AI data centre. The facility was expected to begin operations next year, but concerns over electricity supply and delays have cast doubt on its planned timeline.

The main obstacle is the lack of sufficient electricity to power the proposed facility. UK Power Networks has reportedly informed Nscale that the site may not receive the required power supply until the early to mid 2030s, potentially delaying operations by several years.

Microsoft was expected to be the project’s anchor customer, making its withdrawal a major blow to Nscale. The decision leaves the Essex facility without a publicly announced customer, raising questions about how the company will proceed with the development and attract other businesses to use its infrastructure.

The setback comes as the UK government seeks to expand its AI capabilities and attract investment in advanced computing infrastructure. Data centres are essential to running AI systems because they house the powerful computers and servers needed to train models, process information and deliver digital services.

Nscale, which has backing from major technology players including Nvidia, has been positioning itself as a key provider of AI infrastructure in Britain. The company has also been preparing for a potential stock market flotation in the United States, reportedly targeting a valuation of about $35 billion. The loss of Microsoft’s commitment to the Essex project could complicate those plans.

Despite the withdrawal, Nscale insists it remains committed to the Loughton development and its wider UK operations. A company spokesperson said it was exploring alternative power sources for the site, as well as opportunities to expand elsewhere in the country. The company also stressed that its wider relationship with Microsoft remained strong and that the setback would not affect other contracts, including a separate project in Norway.

Microsoft has not publicly detailed its reasons for terminating the Essex agreement. However, the reported electricity connection delays highlight a wider challenge facing the technology industry: the growing demand for energy is making it harder to build and operate large scale AI facilities on schedule.

The development raises broader questions about whether the UK’s electricity infrastructure can keep pace with its ambitions for artificial intelligence. While the government sees AI investment as an opportunity to boost economic growth and technological competitiveness, projects such as the Essex data centre demonstrate how shortages in essential infrastructure can undermine even high profile investment plans. Nscale says it is continuing to explore solutions, but the project’s future timeline remains uncertain.