New Datacentres Risk Doubling Great Britain’s Electricity Use, Regulator Says

The amount of power being sought by new datacentre projects in Great Britain would exceed the national current peak electricity consumption, according to an industry watchdog. From a report: Ofgem said about 140 proposed datacentre schemes, driven by use of artificial intelligence, could require 50 gigawatts of electricity — 5GW more than the country’s current peak demand.

The figure was revealed in an Ofgem consultation on demand for new connections to the power grid. It pointed to a “surge in demand” for connection applications between November 2024 and June last year, with a significant number coming from datacentres. This has exceeded even the most ambitious forecasts.

Meanwhile, new renewable energy projects are not being connected to the grid at the pace they are being built to help meet the government’s clean energy targets by the end of the decade. Ofgem said the work required to connect surging numbers of datacentres could mean delays for other projects that are “critical for decarbonisation and economic growth.” Datacentres are the central nervous system of AI tools such as chatbots and image generators, playing a vital role in training and operating products such as ChatGPT and Gemini.