Key facts
- AI data centers must help bring down energy bills and not strain the UK's electricity network, according to Energy Minister Michael Shanks.
- Shanks warned that public support for AI infrastructure expansion depends on households seeing clear economic benefits.
- Grid capacity is a growing concern, with some AI projects facing connection delays of up to a decade.
- Government estimates suggest AI data centers could produce between 34 million and 123 million tonnes of CO2 over the next decade.
- New York has implemented a one-year moratorium on new large data center construction to assess impacts on electricity prices and water usage.
Energy Minister Michael Shanks has stated that the rapid expansion of AI infrastructure, particularly power-hungry data centers, must contribute to lowering energy bills rather than placing further strain on Britain's electricity network. Speaking at the UKAI Infrastructure Summit, Shanks warned that public support for AI development could diminish if households do not see tangible economic benefits, emphasizing that affordability is the government's top mission.
The minister's comments come amid growing concerns that grid capacity limitations could hinder investment in the UK's AI ambitions. AI developers are racing to secure the large and reliable power supplies necessary for data centers, adding pressure to a grid already struggling to expand its capacity. Shanks highlighted the opportunity for Britain to lead in the AI revolution while simultaneously improving energy system efficiency and reducing consumer costs.
Recent government estimates indicate that AI data centers could generate between 34 million and 123 million tonnes of carbon dioxide over the next decade, depending on efficiency improvements and the pace of grid decarbonization. The upper estimate represents approximately 3.4% of Britain's projected emissions for the period.
Evidence suggests grid constraints are already impacting AI investment. Nscale, a British company backed by Nvidia, is reportedly seeking alternative power sources for its planned £2 billion data center in Essex due to delays in its National Grid connection. Some projects are facing connection delays that could stretch towards a decade, despite data centers being central to the government's strategy for building domestic AI capacity. Over 100 UK developments are reportedly considering on-site gas generation while awaiting permanent grid access.
Shanks proposed that strategically placed data centers could help alleviate grid pressure by absorbing excess renewable energy, such as surplus power from Scotland that the network cannot always transport south. This could prevent wind farms from curtailing output and ultimately lower consumer bills. He also noted that increased industrial demand could help spread the cost of the electricity system beyond domestic customers.
Globally, New York has become the first US state to halt construction of large new data centers for a year, allowing officials to examine their impact on electricity prices and water supplies. Governor Kathy Hochul cited concerns that unchecked development could raise utility bills and deplete natural resources. Meanwhile, Scottish politicians are also reviewing the need for tougher conditions on data centers.
Britain's overall electricity consumption is projected to double by 2050 due to increased demand from data centers, electric vehicles, and heat pumps, though the exact pace of this rise remains uncertain. Some forecasts suggest AI could accelerate this demand increase, even as overall UK electricity use has declined in recent years. Shanks reiterated that the energy system is ultimately funded by consumers.