Data centers worldwide consumed 788 terawatt-hours of electricity in 2025.
The Energy Institute’s 2026 Statistical Review of World Energy, produced in collaboration with Ember and supported by S&P Global Energy, includes data-center power demand tracking for the first time in the review’s 75-year history.
The numbers behind the surge
Global data-center electricity consumption jumped 19.7% year-over-year, climbing from 658.2 TWh in 2024 to 788 TWh in 2025. Zoom out further and the trajectory looks even more dramatic: consumption has roughly doubled since 2020, when data centers drew 410.8 TWh.
The US sits at the center of this acceleration. American data centers consumed 312.6 TWh in 2025, accounting for 39.7% of the global total. The country also contributed approximately 49% of worldwide growth, adding 63.5 TWh of new demand in a single year.
