Data centre debate heats up ahead of US midterms - here's what you need to know

Key Points:

• Data centres, essential for powering internet activities and AI services like ChatGPT, are rapidly increasing worldwide, with around 12,250 sites currently, up from 8,000 in 2021, and are predominantly concentrated in the US, Europe, and China.
• These facilities are growing in size, with some like China Telecom's data centre in Inner Mongolia covering areas equivalent to 140 football pitches, and new AI-focused mega-sites under construction, such as Colossus 2, which will house advanced AI chips and use methane turbines for power.
• Data centres consume vast amounts of electricity—more than the entire country of France—and require significant water resources for cooling, raising environmental concerns including increased carbon emissions, local pollution, and strain on energy grids.
• Public opposition to data centre expansion is rising globally, notably in the US where it has become a political issue ahead of the midterm elections, with some states proposing bans or restrictions, while similar concerns have emerged in countries like Mexico, France, Indonesia, and the UK.
• Despite environmental and social concerns, proponents argue data centres are vital for national security, AI development, and economic benefits such as job creation and investment, especially from large hyperscale facilities, with the tech industry projected to invest $765 billion in AI infrastructure in 2026, surpassing $1 trillion in 2027.