AI data centres could block new UK homes from electricity grid

TL;DR:

• The UK government is consulting on letting “strategically important” projects including AI data centres skip the electricity grid connection queue, which grew 460% in the first half of 2025.
• The Home Builders Federation warns that excluding housing from the priority list would amount to an “effective moratorium” on new homes in capacity-constrained areas.
• Nearly 500 data centres already account for 2% of UK electricity demand, and the grid operator projects their consumption could increase six-fold by 2050.

The UK government wants to let AI data centres jump the electricity grid queue. Under new proposals, projects deemed strategically important for economic growth and job creation, including AI infrastructure, EV charging hubs, and industrial sites switching from fossil fuels, would receive priority grid connections.

The problem is what gets left behind. All new infrastructure currently joins a virtual queue for electricity connections, and that queue has become unmanageable. In the first half of 2025, it grew by 460%, driven largely by power-hungry data centre applications.

Housing squeezed out

The Home Builders Federation (HBF) has warned that new homes are not included in the priority category. Steve Turner, HBF’s executive director, said the arrangement would effectively prioritise “energy intensive data centres over energy efficient homes for families.”

This is not a theoretical risk. London Assembly members warned in December that housing developments in west London had already been temporarily delayed after the local grid reached capacity. Data centres already receive preferential treatment in planning after being designated critical national infrastructure, meaning local objections cannot block them.

Speculative projects clogging the queue

Energy regulator Ofgem has flagged a separate issue: many projects in the queue are speculative, lacking sufficient financing, planning permission, or land rights to proceed even if granted a connection. Genuine projects with real economic potential are stuck behind applications that may never materialise.

The government’s proposal attempts to address both problems simultaneously: tightening entry requirements while fast-tracking projects with clear economic value. AI Minister Kanishka Narayan framed the reforms as essential to “seize AI’s potential.”

The tension between AI infrastructure ambitions and housing supply mirrors a pattern seen across UK planning policy: competing national priorities that cannot all be served by the same constrained resource. With data centre electricity demand projected to increase up to six-fold by 2050, the grid capacity question will only sharpen.