Data centers raise U.S. electricity demand

U.S. electricity demand is rising after years of relative flatness, and federal energy officials are increasingly linking that growth to data centers built for artificial intelligence workloads. The shift has moved from investor chatter into official forecasts, grid rulemakings and company power-procurement plans over the past several months. The result is a more concrete picture of what AI infrastructure means in practice: more power demand, more stress on interconnection queues, and more competition for generation, transformers and transmission. Social-media posts on May 20-21 highlighted those pressures, but the underlying trend is already showing up in U.S. government and industry data. ### Where is the demand showing up first? The U.S. Energy Information Administration said on Jan. 13 that it expects the strongest four-year growth in U.S. electricity demand since 2000, and said data centers are a key driver. EIA said U.S. electricity use would grow 1% in 2026 and 3% in 2027 in that January outlook, marking the first time since 2007 that power demand would rise for four straight years. (eia.gov) EIA said again on March 12 that electricity demand had been rising steadily since 2020 after more than a decade of little change. Between 2020 and 2025, U.S. electricity demand grew about 1.7% annually, compared with 0.1% annual growth between 2005 and 2019, and the agency said electricity use by data centers was driving that growth. ### Which regions are under the most pressure? (eia.gov) ERCOT and PJM are the clearest examples in current federal forecasts. EIA said in its March analysis that annual electricity load was expected to rise 10% in ERCOT and 3% in PJM, on average, between 2025 and 2027. PJM covers all or part of 13 states and Washington, D.C., while ERCOT covers most of Texas. FERC staff said in its May 2026 summer reliability assessment that electricity consumption this summer is expected to be higher than in each of the previous five summers. (eia.gov) The report said new generator additions and transmission expansions are expected to help meet that demand, while warning that possible reliability challenges remain in parts of New England, western ERCOT and the Pacific Northwest under extreme conditions. ### Why are investors and operators talking about power instead of chips alone? The bottleneck is no longer only semiconductors. The Financial Times reported that five U.S. facilities from 2026 would each draw at least 1 gigawatt of electricity, and that data centers across the country represent about 51 gigawatts of combined capacity. It also cited S&P Global Energy estimates that new data centers would require 44 gigawatts of additional capacity by 2028, against about 25 gigawatts likely to be available, leaving a 19-gigawatt gap. (ferc.gov) Satya Nadella, Microsoft’s chief executive, told a podcast cited by the Financial Times that “the biggest issue” was power rather than a compute glut. The same report said hyperscalers including Amazon, Google, Meta and Microsoft had set out plans for more than $400 billion in capital expenditure. ### How are companies trying to get around grid delays? Nebius and Bloom Energy said on May 20 they would deploy Bloom fuel cells to support Nebius’s U.S. (ig.ft.com) AI infrastructure build-out. The companies said the first project would include 328 megawatts of installed capacity planned to be operational this year, with the systems intended to reduce dependence on new transmission build and shorten time to power. Andrey Korolenko, Nebius’s chief product and infrastructure officer, said in the announcement that “power remains a key constraint for AI infrastructure build-outs.” Bloom said the arrangement would provide behind-the-meter electricity for AI workloads. ### What do the longer-term forecasts say? EIA said on May 19 that electricity consumed by data center servers would keep rising across the commercial building stock through 2050. (markets.ft.com) In its Annual Energy Outlook 2026 cases, server consumption alone reaches 446 billion to 818 billion kilowatt-hours by 2050, and servers accounted for an estimated 7% of commercial-sector electricity consumption in 2025. The International Energy Agency said the United States is on course for data centers to account for almost half of growth in electricity demand through 2030. The agency also said supply chains for gas turbines, transformers and advanced chips have tightened, while data-center pipelines are straining grid-connection and permitting systems. (eia.gov) ### What happens next in Washington? FERC said on April 16 that it would act by June 2026 on a large-load interconnection docket aimed at integrating significant new electrical loads such as data centers into the transmission system. Chairman Laura V. Swett said the commission was addressing “rapid growth in demand from data centers and other large-scale consumers.” (iea.org) June 2026 is the next formal milestone to watch. FERC’s decision in docket RM26-4-000 will sit alongside utility forecasts from PJM and ERCOT and a growing list of company power deals as operators race to secure capacity for new AI facilities. (ferc.gov)