FERC Reports 50 GW of Data Center Capacity in U.S. by End of 2025, MISO Leads Growth
The U.S. data center capacity exceeded 50 GW by the end of 2025, reflecting a 24% annual growth since 2020, as reported by FERC. MISO region experienced the highest growth at 43%. Other notable regions include ERCOT and SPP, with growth rates between 28% and 30%. Despite ongoing construction challenges, average data center sizes increased from 25 MW in 2020 to nearly 80 MW. Electricity prices rose by 25%, influenced by higher fuel costs and demand. Net power production and battery storage capacity also saw significant increases.
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By the end of 2025, U.S. data center capacity reached over 50 GW, representing a 24% compound annual growth since 2020, as per FERC. The Midcontinent Independent System Operator (MISO) led this growth with a 43% increase.
Other regions such as ERCOT and SPP followed with annual growth rates of 28% to 30%. Approximately 5,995 MW of data center capacity was under construction, a decrease from 6,350 MW in 2024, attributed to delays in permitting and zoning.
Average data center sizes grew significantly, while average electricity prices surged by 25% last year due to rising demand and fuel costs. U.S. power production increased by 3% to 4,275 TWh, and battery storage capacity expanded greatly, with California and ERCOT accounting for a large portion of this growth.
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