The £10 billion development announced last September, will see ten data centres built across a 133-acre site. Backed by US investment giant Blackstone and led by infrastructure firm QTS, the site is expected to emit around 184,000 tonnes of CO2 per year – a total higher than that produced by Birmingham Airport.
Planning documents show the facility will double industrial emissions in Northumberland and contribute 12% of the county’s total emissions by 2030.
The project is part of a broader government strategy to accelerate digital growth and support AI. Since September 2023, data centres have been classified as critical national infrastructure, with the government working to develop an “AI growth zones” strategy to encourage more deployments and eliminate restrictions.
Earlier this year, a Ciena survey of global data centre leaders found that bandwidth demand is expected to grow sixfold over the next five years, largely driven by AI-related computing. While these facilities are becoming essential for digital infrastructure, their growing energy demands have sparked concerns about long-term sustainability and power consumption.
Campaigners say the government’s approach could come at a serious environmental cost. The UK is legally bound to reach net zero carbon emissions by 2050, and critics argue projects of this scale risk derailing local and national targets.
“It is difficult to see how the Government plans to reach its manifesto commitment of hitting net zero by 2050 when it is approving construction projects that add the impact of a major regional airport to our annual emissions,” said Martha Dark, of the non-profit group Foxglove.
Data centres consume huge amounts of electricity to power and cool thousands of servers. While renewable energy is the cleanest option, it’s not always reliable or available when needed.
Sources such as wind and solar cannot produce power all the time, and the UK’s energy grid is not yet set up to store or deliver enough renewable power around the clock. Until that changes, there’s a risk that big developments like the Blyth site will still rely partly on fossil fuels, making it harder to cut emissions overall. Microsoft and Google, both of whom are investing heavily in data centres globally, reported higher carbon emissions in their latest annual reports, despite clean energy commitments.
A Government spokesperson defended the decision, saying “Our Clean Power Action Plan (the UK government’s strategy to achieve a mostly fossil fuel-free electricity system by 2030) will enable the development of new energy intensive industries such as data centres, helping to grow the economy.
“Advanced modular reactors will play a particularly important role in growing energy-hungry sectors like AI and we’re shaking up the planning rules to make it easier to build nuclear power stations across the country.”
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