UK Power Grid Clogged by Speculative Data Center Applications
Britain's energy regulator Ofgem is proposing steep financial requirements to purge speculative, likely-never-to-be-built data center projects from the grid connection queue, while trying not to scare off genuine investment.
The queue for connecting to the UK's power grid has become clogged with data center projects that are unlikely to ever be built, worsening already lengthy wait times for legitimate developments and complicating efforts to forecast energy demand and plan network upgrades.
In July, energy regulator Ofgem outlined a proposal aimed at pushing these so-called phantom data centers out of the queue. Following an industry consultation period ending in September, the plan would require developers to pay a steep, nonrefundable deposit — potentially reaching hundreds of millions of dollars for the largest projects. Developers would also need to demonstrate secured customers and confirmed funding before their applications move forward.
A queue that exploded
The backlog began growing rapidly in late 2024, around when the government designated data centers as critical national infrastructure. Between November 2024 and June 2025, total energy demand from queued projects jumped from 41 gigawatts to 125 gigawatts, with new data centers accounting for 73 gigawatts of that figure — equivalent to one and a half times the UK's entire peak demand last year.
Experts attribute much of the problem to weak incentives: since joining the queue previously cost only a few thousand dollars, developers had little reason not to apply even without a solid plan to build. This dynamic has also attracted middlemen who apply for grid access hoping to later sell land and connection rights at a premium.
Balancing deterrence and investment
Ofgem says data centers remain central to the UK's AI ambitions, but experts warn that fees set too high could make the UK — already burdened by high energy costs and land scarcity — even less competitive against the US and parts of Europe. There are also concerns the rules could squeeze out smaller, AI-focused data center operators, leaving only the largest firms able to participate.
Still, many industry observers believe cleaning the queue of phantom projects will ultimately give the UK a stronger long-term position to capture a share of the hundreds of billions of dollars flowing into AI infrastructure, by enabling more targeted and efficient grid investment planning.
