Uncertainty Over Data Centres' Impact on Net Zero Goals
Energy Secretary Ed Miliband has stated that the effect of the rapid expansion of data centres on the UK's efforts to reduce carbon emissions to net zero is "inherently uncertain".
Miliband expressed this view in a letter addressed to Members of Parliament who had raised concerns about the absence of data centres in the government's net zero strategy.
Following Miliband's letter, MPs have initiated a new inquiry into the environmental consequences of data centres within the UK.
Role and Growth of Data Centres
Data centres are large-scale facilities housing powerful computers that support digital services such as streaming and artificial intelligence (AI).
The UK government aims to establish the country as a global leader in AI and is actively seeking to attract investment in data centres to support this ambition.
However, there are concerns regarding the substantial water and electricity consumption required to operate these centres, including reliance on gas-powered generators.
Numerous new data centres, many financed by US technology companies, are planned, raising environmental campaigners' fears that this growth could significantly increase emissions.
The UK government is legally mandated to achieve net zero carbon emissions by 2050, following legislation passed in 2019 with cross-party support.
Government Modelling and Emissions Projections
In his letter, Miliband explained that the government's modelling "accounts for potential emissions from data centres through our projection of overall electricity demand growth, which reflects broader economic trends."
"Future demand from data centres, and interaction with wider energy system demands, remains inherently uncertain."
Miliband further stated that the modelling would "test a range of trajectories to assess the potential emissions impact under different outcomes."
This letter provides the most detailed insight yet into the Department of Energy's approach to incorporating data centres' impact into climate planning.
Inquiry into Increasing Energy and Water Demand
The response was prompted by a letter from Toby Perkins, chair of the Environmental Audit Committee, who queried whether data centres had been included in net zero plans.
The committee's new inquiry will investigate the anticipated energy and water usage of data centres and their potential effects on the government's net zero objectives.
"Will data centres power the UK's economic growth? Perhaps,"Perkins said.
"But what kind of implications will they have for energy and the environment?"
The Labour MP emphasized the importance of thoroughly considering data centres' impacts before approving their widespread development.
Political Perspectives on Data Centres and Climate Policy
Conservative shadow energy secretary Claire Coutinho argued that excluding data centres from the UK due to domestic net zero targets "will do nothing to tackle climate change, but it will make us all poorer."
"If we adopted a more rational approach we could have the benefits of growth from AI, focus our attention on exporting the clean tech the rest of the world needs, and protecting nature here and abroad."
The UK government has been investing significantly in renewable energy to meet a target of supplying 95% of electricity demand from clean sources by 2030.
However, the rapid increase in electricity demand could challenge the achievement of this goal.
Ofgem Report on Data Centre Energy Demand
This month, Ofgem, the UK's energy market regulator, reported that a surge in grid connection requests last year was "driven by the rapid growth" of data centres.
Ofgem's report identified 140 proposed data centres, which would require approximately 50 gigawatts (GW) of electricity—5GW more than the UK's current peak demand.
Environmental Campaigners' Concerns
Friends of the Earth, an environmental campaign group, warned that if all proposed data centres become operational, "they could consume more electricity each day than the entire country does now."
"It's no wonder the government views the future usage of data centres as 'inherently uncertain',"said Mary Stevens, a spokesperson for the group.
"What isn't uncertain is this government's growth-at-all-costs agenda."
"Having greenlit rampant airport expansion, and now potentially a raft of data centres, it's unclear how ministers will ensure the UK sticks to its legally binding climate targets and prevents rocketing emissions and water usage,"the spokesperson added.
