A late 2024 international report https://www.iea.org/reports/energy-and-ai/energy-demand-from... predicts that by 2035, datacenter electricity usage will increase from 2024's 1.5% to 2-4.4% of global usage. Currently about 1/3 of datacenter electricity usage is for AI (0.5% of that 1.5%), though that will presumably increase.