How Much Power Does an AI Data Center Use? 120 kW a Rack, 812,000 Homes per Gigawatt, and the GPUs and HBM Inside (Oct. 2026)
One AI rack draws about 120 kW. A 1 GW campus equals about 812,000 US homes. US data centers used 4.7% of the nation’s power in 2024, heading to 11.8% by 2030. GPUs, HBM and water, sourced.