On July 29, 2026, Ofgem proposed that data centres in the UK pay refundable deposits before securing spots on the national electricity grid. This move targets speculative power requests that threaten to overwhelm Britain’s energy infrastructure.
Currently, around 140 data centre projects are requesting nearly 50 GW of grid connection capacity. For context, the UK's peak electricity demand is about 45 GW. Essentially, data centres alone demand more power than the entire country uses at its busiest times.
The connections queue has ballooned dramatically, jumping from 41 GW in late 2024 to 125 GW by mid-2025. Meanwhile, the actual operational capacity of UK data centres remains near 2 GW, highlighting a huge gap between what’s applied for and what exists.
Only half of these projects, about 71, representing roughly 20 GW, have made firm investment decisions. The rest hover between vague plans and speculative ambitions that contribute to grid congestion and delay.
Ofgem’s plan involves refundable deposits and escalating commitment fees linked to project milestones. These deposits, potentially reaching hundreds of millions of dollars, would return only after projects demonstrate real progress, discouraging empty applications.
This proposal comes as the UK government fast-tracks AI-related infrastructure through special zones and national status for qualifying projects. While approvals speed up, the new financial barriers aim to sift out projects without serious funding from slowing down the grid connection process.
Ofgem expects to share its formal proposals by spring 2026, with final rules possibly set by late 2026 or early 2027. The stakes are high. Efficient grid use is critical as AI growth zones expand, and power-hungry infrastructure becomes a pillar of tech development in the UK.
This article provides informational content and is not financial advice.
