The U.K. government is facing a legal challenge from campaigners over its decision to override a local authority and wave through development of a new "hyperscale" data center. Last year, the local authority of Buckinghamshire, England, denied planning permission for proposals to build a new 90-megawatt data center on green belt land. The green belt is a term in British town planning that refers to an area of open land on which building is restricted. Data centers, large facilities that house floods of computing systems to enable remote delivery of various IT services, have seen huge demand in recent years amid a global rush to develop powerful new AI systems, such as OpenAI's popular ChatGPT chatbot. At the same time, they have been met with concerns from environmental campaigners and activists due to the vast amounts of power they require to keep them running on an ongoing basis. AI, in particular, has been criticized for consuming massive amounts of energy. Plans to develop the Buckinghamshire facility were twice rejected by the council previously. However, they were again resurrected under the Labour government, which is pushing to make the U.K. a global artificial intelligence hub by ramping up national computing capacity. Buckinghamshire council again rejected the planned data center in June 2024, saying it would be "inappropriate" to develop it on the green belt. Then, last month, British Deputy Prime Minister Angela Rayner granted planning permission for the project, overturning the local authority's decision.