The UK Power Grid Has a Phantom Data Center Problem
Ofgem is proposing tougher rules to remove speculative “phantom” data centre projects from the UK electricity grid connection queue. The measures aim to speed up access for credible developments, which is important for the UK’s AI ambitions and wider economic growth, but could also make the country less attractive for investment.
Developers may have to pay large non-refundable deposits, secure customers and prove funding before receiving grid capacity; for the biggest sites, deposits could reach hundreds of millions of dollars. Projects seeking connections rose from 41GW in November 2024 to 125GW by June 2025, including 73GW from data centres—around one and a half times the UK’s peak electricity demand last year. Cheap queue entry has encouraged developers to reserve capacity without firm plans, worsening delays and enabling some to profit by reselling land with grid access.
- Ofgem targets speculative data centre grid applications.
- Data centre requests now total 73GW.
- Rules must deter speculation without deterring investment.
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Britain’s electricity grid has limited capacity to connect new projects, including factories, housing schemes, renewable power sites and data centres. A queue system decides which developments get access and when, but developers have often been able to apply before their plans are fully financed or built.
Data centres are large buildings full of computers that store and process digital information, and they need substantial amounts of electricity. Demand has grown as companies expand cloud services and develop artificial intelligence, leading many developers to seek grid connections for proposed sites.
Ofgem is the independent regulator for Britain’s energy system. It is considering rules intended to give priority to projects that are more likely to go ahead, while also balancing the need to keep the UK open to future investment in data infrastructure.
Both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
Tougher entry requirements could make grid planning more credible by distinguishing funded, customer-backed projects from speculative reservations. Supporters argue that scarce connection capacity should go first to developments likely to be built, reducing delays for productive data centres, clean-energy projects and other businesses while limiting opportunities to profit simply from holding a queue position. They see meaningful deposits and evidence of finance as proportionate safeguards for infrastructure whose expansion requires long-term public and private investment.
The case against
High non-refundable deposits and demanding proof requirements could favour established, well-capitalised developers over innovative newcomers and smaller British firms. Opponents argue that data-centre demand and customer commitments often develop gradually, so imposing certainty too early may deter legitimate projects before they can secure financing or tenants. They contend that the UK risks weakening its appeal as an AI and digital-infrastructure destination unless queue reform is paired with faster grid build-out and flexible routes for credible early-stage schemes.