How much electricity does AI consume? [2025 summary]

Hannah Ritchie does the numbers. In 2025 AI drew about 0.5% of global electricity and data centres as a whole 1.5% -- modest totals, but heavily concentrated: 5% of US demand, more than 20% in Ireland. The IEA expects data centres to reach 3% of global demand by 2030, with AI the main driver. The real problem isn't the aggregate, it's the concentration -- several US states already route more than 10% of their power to data centres.

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