The United States hosts more than 4,500 active data center facilities that together consume an estimated 176 terawatt-hours of electricity each year, roughly 4.4 percent of national consumption, with over 700 additional facilities under construction across 38 states. The figures illustrate how concentrated and fast-growing the sector's power footprint has become.

S&P Global projects that data center grid-power demand will rise about 22 percent in a single year and nearly triple by 2030, one of the steepest sustained demand increases in the modern grid era. In gigawatt terms, U.S. data center demand is forecast to reach 75.8 gigawatts in 2026 and 134.4 gigawatts by 2030, driven by AI training and inference workloads that require dense, power-hungry server clusters.

National generation is climbing to meet the load. U.S. electricity generation is expected to reach about 4,400 terawatt-hours in 2026, with the potential to rise toward 5,200 terawatt-hours by 2030, an increase of nearly 24 percent from 2023 levels. Much of that incremental demand traces directly to computing.

The growth is regionally uneven, clustering where land, fiber, and power converge. That concentration places heavy pressure on specific utilities and transmission corridors, forcing accelerated investment in generation and grid upgrades. The data depicts a power system absorbing a structural new source of demand rather than a temporary surge.

Source: S&P Global - https://www.spglobal.com/energy/en/news-research/latest-news/electric-power/101425-data-center-grid-power-demand-to-rise-22-in-2025-nearly-triple-by-2030