UK datacentre emissions could surpass ExxonMobil's, threatening climate targets

27 August 2026 4 min readSource: theguardian.com
Two planned datacentres will have higher UK carbon emissions than ExxonMobil, analysis finds | Datacentres - UK | The Guardian

Executive summary

Two planned datacentres in Buckinghamshire and Bedfordshire are projected to emit more carbon annually than ExxonMobil's entire UK operations. This analysis highlights the significant energy demand and carbon impact of rapidly expanding AI infrastructure on the UK's legally binding climate goals, with proposals for on-site gas-fired power stations raising further concerns.

Reporting based on theguardian.com

Why it matters

For UK AI and energy readers, this article underscores the critical challenge that datacentre expansion, particularly for AI, poses to the national energy system and climate commitments. The demand for electricity from these facilities, including reliance on gas-fired generation due to grid connection delays, directly impacts grid stability, carbon budgets, and the viability of the UK's net-zero transition.

Sector impact

Analysis by AI Energy Intelligence UK

UK electricity demand

When fully operational, the Wapseys Wood and Quest Park datacentres alone are projected to use 1.3GW of power. Across the UK, there are 315 datacentres awaiting grid connection, representing 73GW of demand, which is almost double the UK's peak winter energy demand.

UK energy security

Due to extensive waiting times for grid connection, the Wapseys Wood and Quest Park datacentres are proposing to construct their own on-site gas-fired power stations. This approach could intensify reliance on fossil fuels for energy provision, potentially impacting the UK's energy security strategy aimed at decarbonisation.

Businesses

The analysis suggests that the rapid rollout of datacentres, if not managed within carbon budgets, might necessitate much stricter carbon allowances for other sectors of the economy. The use of the National Significant Infrastructure Project (NSIP) regime for these facilities indicates a fast-tracked development approach, bypassing some local planning scrutiny, which could affect local business environments.

Consumers

The article does not directly address the impact on consumers, but ClientEarth lawyer Sam Hunter-Jones states that every megawatt powering a datacentre means one less megawatt available to replace fossil fuels elsewhere, implying a broader systemic impact on the energy transition that could ultimately affect consumer energy costs and carbon footprint.

Key statistics

4.5m tonnes
Projected annual carbon emissions from two datacentres
3.9m tonnes
ExxonMobil's UK emissions in 2023
1.3GW
Power usage of two planned datacentres
315
Number of datacentres in UK grid connection queue
73GW
Total demand from queued datacentres

Figures as reported by theguardian.com. See original source for context.

Quotations

"serious threat"

Experts

"misleading"

A government spokesperson

"valid to look at those top level predictions"

Kierra Box, Friends of the Earth

"absolutely horrifying"

Caroline Lucas

"potent reminder that without the right measures in place, data centres could represent a serious threat to the environment and to our legally binding climate goals"

Toby Perkins, Labour MP

"catastrophic for our carbon budgets"

Oliver Hayes, Global Action Plan

"The reality is that unchecked datacentre growth is making the transition away from fossil fuels harder, not easier"

Sam Hunter-Jones, ClientEarth lawyer

"very worrying sign"

Oliver Hayes, Global Action Plan

"affront to local people"

Oliver Hayes, Global Action Plan

"insulates"

Caroline Lucas

"Datacentres are a vital part of our economy and our everyday lives, helping us interact with the services we need, while driving growth and renewal for communities. We will enable the development and growth of new industries, such as datacentres, by building unprecedented amounts of clean power."

A spokesperson for the Department for Energy Security and Net Zero

Long-term implications

The projected emissions from these datacentres, coupled with the overall demand from 315 queued facilities, present a serious long-term threat to the UK's legally binding climate goals and its seventh carbon budget. The reliance on gas-fired power for new datacentre infrastructure also signals a potential long-term lock-in of fossil fuel generation capacity, hindering the transition to a fully decarbonised grid.

AIDatacentresCooling equipmentGas-fired power stations

Frequently asked questions

What is the projected carbon footprint of the two planned datacentres?

When fully operational, the Wapseys Wood and Quest Park datacentres are projected to produce more than 4.5m tonnes of carbon emissions annually.

How does this compare to ExxonMobil's UK emissions?

The projected 4.5m tonnes of carbon emissions from these two datacentres exceed ExxonMobil's reported 3.9m tonnes in the UK for 2023.

Why are these datacentres a concern for UK climate goals?

Experts state that the high energy demand and associated emissions, particularly from planned on-site gas-fired power stations, pose a 'serious threat' to the UK's legally binding climate targets.

How much electricity will these two datacentres use?

The two datacentres, Wapseys Wood and Quest Park, are projected to use 1.3GW of power when fully operational.

What is the broader picture of datacentre demand in the UK?

There are 315 datacentres currently in the queue to connect to the UK's electricity grid, representing a total demand of 73GW, which is almost double the UK's peak winter energy demand.

Why are these datacentres planning their own gas power stations?

They are seeking to build their own on-site gas-fired power stations because of the long wait times to connect to the national electricity grid.

Original source

This story summarises reporting from theguardian.com. Read the original for full context.

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