Data centre expansion and AI infrastructure growth are concentrating demand for traceable renewable electricity among a small number of very large buyers. I&C businesses across the UK are already experiencing the effects on renewable access.
The assumption that no longer holds
UK renewable generation has expanded faster than most forecasts predicted over the past decade. A new category of buyer entered the market at a scale the system was not designed to absorb.
UK data centres accounted for roughly three per cent of national electricity demand in 2023. Industry estimates project that figure could exceed six per cent within five years. Training a single frontier AI model can require as much electricity as a small city consumes in a year.
How demand concentration reshapes the remaining pool
Large-scale data centre operators do not procure electricity through standard retail supply contracts. They negotiate long-term bilateral agreements directly with renewable generators, securing traceable output years ahead of delivery.
Where a typical commercial buyer might seek five to fifteen megawatts, a single hyperscale data centre campus can absorb the entire output of a large offshore wind project.
The procurement gap widens
I&C businesses are competing for a shrinking share of traceable renewable generation. Many are discovering that supply they assumed was accessible has already been committed under long-term arrangements signed months or years earlier.
A structural shift, not a passing pressure
The question for boards and commercial directors is not whether data centre growth has affected their position in the UK business energy market. The question is whether their current energy sourcing strategy was designed for the market that now exists.
