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Data Centres: Boom and Backlash
6MAY

OpenAI puts a number on UK electricity gap

4 min read
13:52UTC

OpenAI cited UK industrial electricity at 'more than four times' US, Finnish, Norwegian, and Swedish rates as a primary driver of the Cobalt Park pause, the first time a hyperscaler has named energy cost as a co-equal barrier alongside the grid queue.

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IndustryDeveloping
Key takeaway

OpenAI's 4x figure makes UK energy cost a permanent siting blocker until the merit-order pricing structure is reformed.

OpenAI publicly attached the multiplier 'more than four times' to UK industrial electricity rates relative to US, Finnish, Norwegian, and Swedish equivalents on 27 April 2026, naming the differential as a primary driver of the Cobalt Park pause in North Tyneside . The figure aligns with IEA price data showing UK industrial rates near $0.20-0.22/kWh against US $0.06-0.07/kWh and Finnish $0.07-0.09/kWh. For a 100 MW campus running at typical AI-training utilisation, that gap means roughly $100 million in additional annual electricity cost compared with a US site, before any consideration of compute density or cooling overhead.

OpenAI quantified what hyperscalers had previously said off the record. Until this week, the UK's headline data-centre problem ran through the grid queue: 50 GW of contracted demand against 45 GW of national peak . Hyperscalers had been treating energy cost as a secondary issue subordinate to interconnection wait times, on the working assumption that NESO and the AI Growth Zone designations would ease the queue. OpenAI's intervention separates the two and quantifies the second. With a queue solution, the UK still loses the campus economics by a factor of four.

UK industrial electricity pricing is shaped 60 to 70 per cent by gas-marginal merit-order pricing, plus carbon and network charges. None of those components have been reformed since the AI boom began, and the DESNZ and NESO policy responses available within the next twelve months do not change the merit-order structure. The implication is that the UK's data-centre future is becoming a talent-and-research base rather than a compute base; the capital that would have built Cobalt Park, Nscale's Glasgow expansion, and the Nottinghamshire AI Growth Zone is now redirecting into Nordic, Aragón, and Abu Dhabi tracks. The 50 GW grid queue persists, but it has been joined by a structural cost ceiling no rule cycle can lift.

Deep Analysis

In plain English

OpenAI explained publicly that electricity for businesses in the UK costs more than four times what it costs in the US, Finland, Norway, and Sweden. For a large data centre using 100 megawatts of power, roughly what a mid-sized city hospital district uses, that difference adds up to about $100 million in extra costs every year compared to a US location. This is the first time a major tech company has put a specific number on the energy cost gap and tied it directly to a decision not to build in the UK. The gap exists because UK electricity bills for businesses include several layers of charges for subsidising renewable energy and maintaining the grid that do not appear in Nordic or US tariffs at the same scale.

Deep Analysis
Root Causes

UK industrial electricity rates have three distinct structural components that do not appear in Nordic or US rates at comparable magnitude.

Network charges account for roughly £60-70/MWh of UK industrial tariffs in 2026 because the UK's Contracts for Difference (CfD) subsidy mechanism for renewables is recovered through network tariffs rather than direct taxation. The CfD mechanism has underwritten approximately £90 billion of offshore wind investment since 2014 and its cost recovery is embedded in the tariff structure until the early 2030s.

Balancing costs (the cost of keeping the grid stable when intermittent generation and demand are mismatched) add another £15-25/MWh in a market with 35 per cent wind and solar penetration but limited grid-scale storage. The UK's balancing mechanism is more expensive per MWh than any comparable European market because the GB grid runs at higher residual demand variability than the larger continental ENTSO-E synchronous zone.

The third component is the absence of a co-payment mechanism for transmission reinforcement: in the US, large loads trigger a generator-style interconnection study that assigns upgrade costs to the triggering party, capping unexpected network cost socialisation. In the UK, transmission upgrade costs are socialised across all users before cost recovery flows into network tariffs, which means existing users partly subsidise new entrants' connection costs, inflating the aggregate tariff.

What could happen next?
  • Consequence

    The UK falls off the global top-10 shortlist for new hyperscale greenfield sites as long as the 4x cost gap persists, redirecting an estimated 2-4 GW of announced UK data centre pipeline to Finland, Spain, and the Gulf before 2028.

  • Opportunity

    Ofgem's 2026 transmission tariff review and NESO's direct connection agreement process could, if they produce a 30-40 per cent reduction in network charges for large greenfield users, narrow the gap to 2-2.5x and restore UK competitiveness for mid-scale operators not requiring the Nordic price point.

Sources:The Next Web
Mentions:OpenAI →Stargate →NESO →International Energy Agency →Aragón →DESNZ →Finland →Ofgem →North Tyneside →EirGrid →Norway →Nscale →Abu Dhabi →Glasgow →Sweden →
First Reported In

Update #2 · Maine veto, Seattle freeze, $725bn capex

The Next Web· 6 May 2026
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Causes and effects
Caused by
OpenAI pauses Cobalt Park Stargate site
OpenAI's Cobalt Park pause (ID:2785) was extended in this window by OpenAI attaching the specific 4x energy-cost figure, turning a vague regulatory complaint into a quantified site-selection barrier.
Occurred 23 Apr 2026
Read story →
This Event
OpenAI puts a number on UK electricity gap
For a 100 MW campus, the UK-US rate gap means roughly $100 million a year in additional electricity cost; the figure drops the UK off the global shortlist for new greenfield builds.
Led to
UK Gate 2 grid offers begin issuing
OpenAI's quantification of UK industrial power at four times US and Nordic rates forced the electricity discount concession that is now part of the Gate 2 AI Growth Zones offer.
Occurred 13 May 2026
Read story →
SoftBank bets EUR 75bn on France
OpenAI's quantification of UK electricity at four times US and Nordic rates provided the cost rationale for routing capital to France instead.
Occurred 30 May 2026
Read story →
Different Perspectives
Global hyperscale operators
Global hyperscale operators
Operators are still filing gigawatt-scale campuses and Meta is proceeding with its $10bn Lebanon, Indiana site despite the county-level bans nearby, betting Q2 capex outruns the patchwork of restrictions. Industry framing casts New York's freeze, Oregon's surcharge and Indiana's bans as taxes and levies that push build-out toward faster-permitting jurisdictions such as India and the Gulf.
EirGrid
EirGrid
EirGrid set a 900 MW instantaneous demand-loss ceiling because a single voltage dip can trip many data centres onto backup power at once, risking imbalance above 1,150 MW. It wrote the limit into a standing procedure rather than waiting for an emergency to force one.
US host communities and ratepayers
US host communities and ratepayers
Prince William residents backed the 8-0 denial of Dulles South over the Occoquan watershed, drinking water for eight million people, while Oregon's approved tariff cuts residential bills 1.3% by charging large loads 29% more. Their position: consent and cost-attribution belong in law, not left to a developer's or a utility's discretion.
Hassan Allam Digital Infrastructure
Hassan Allam Digital Infrastructure
Hassan Allam Digital Infrastructure, an Egyptian conglomerate rather than a foreign hyperscaler, reportedly secured a domestic hyperscale licence with a $400m first phase, per single-source reporting still to be verified. It reads as home-grown sovereign compute ambition, building national capacity rather than importing a US or Gulf operator's campus.
Damac Digital
Damac Digital
Damac Digital keeps building toward roughly 6,000 megawatts of hyperscale capacity across 13 countries while Virginia taxes power and New York weighs a freeze. Every dollar or month of delay a US state adds is capacity a Gulf developer can site somewhere with faster permitting and no equivalent levy.
Acequia communities, Santa Fe County
Acequia communities, Santa Fe County
Santa Fe County commissioners voted unanimously on 2 July to freeze any data centre over one megawatt, citing the acequia irrigation commons that has shared scarce water since Spanish colonial rule. They expect the low threshold to draw the same Fifth Amendment challenge RCM Hill brought against Hill County, Texas.