The UK’s grid connection queue now exceeds 600 gigawatts, nearly ten times peak demand. Data centres account for a growing share of that queue, and the cost of connecting them has traditionally been spread across every household’s electricity bill.
Ofgem is now consulting on a rule change that would force data centres to pay millions upfront for their own power connections, as reported by Qazinform. The proposal is straightforward: those who build the demand should pay for the infrastructure, not the households who already struggle with bills.
Who qualifies, and who doesn’t
The proposed rule targets large energy users, typically data centres above 10 MW of capacity. Smaller commercial users and residential developments would not be affected. Ofgem estimates that if all new data centres paid upfront, the annual saving for a typical household on a standard variable tariff would be roughly £20. That figure assumes the current pipeline of 15 GW of new data centre capacity over the next five years.
But the catch is timing. Data centres argue that upfront costs of £50 million to £100 million per site will deter investment. The UK already lags behind Ireland, Germany and the Netherlands in data centre build-out. Slower construction could mean higher costs for cloud services and streaming, costs that households pay indirectly.
What it costs a typical 3-bed semi
Households currently pay network charges through their electricity bill, about £180 a year for a typical 3-bed semi using 12,000 kWh. Of that, roughly £15–£20 is linked to the cost of connecting large users like data centres. Under the new rule, that portion would disappear for new connections. Existing data centres already connected would not be affected.
The Energy Saving Trust notes that network charges make up about 25% of a typical bill. Any reduction in that component is welcome, but £20 a year is modest, roughly the cost of one takeaway coffee per month. The real benefit is fairness: households no longer subsidise corporate infrastructure.
What this means for your EPC and home upgrades
Cheaper network charges won’t directly improve your EPC rating, but they free up household cash for energy efficiency measures. The average loft insulation install costs £300–£500 and saves £100–£200 a year on heating. Redirecting even part of the £20 saving into a draught-proofing kit (typically £50–£100) yields a far better return than letting it sit in the bill.
Ofgem’s consultation runs until 31 March 2025. Households can submit responses via the Ofgem website. The final decision is expected in late 2025, with new connection rules taking effect from April 2026.
If you’re on a standard variable tariff, check your bill for the network charges line, it’s usually labelled ‘distribution use of system’ or ‘transmission use of system’. That’s the line that could shrink by £20 if Ofgem pushes the cost onto data centres.
Frequently Asked Questions
Only new data centre connections will be affected. Existing connections are not subject to the proposed rule. Households should see a small reduction in network charges, roughly £20 a year, once the rule takes effect, likely in 2026.
Data centres may pass on higher upfront costs to customers. However, the impact on household streaming bills is expected to be minimal, less than £1 a month for a typical Netflix subscription. The trade-off is a fairer allocation of grid costs.
