According to the International Energy Agency, data centers are projected to consume between 650-1,050 TWh by 2026, with these facilities accounting for roughly 1. 5% of global electricity consumption in 2024. This comprehensive guide explores exactly how much electricity data centers use, what drives their enormous energy appetite, and what the future holds as. Data centers power nearly every digital interaction in modern business, from cloud computing services to artificial intelligence applications. Data centers are burning through a staggering 42% of global energy share from hyperscale operators, and the global average PUE is still sitting at 1. This implies an annual growth on the order of 10–15% per year in the latter 2020s.