U.S. Battery Storage Capacity Grows 66% In 2024, Reaching 26 GW – EIA

In 2024, battery storage capacity in the United States grew by 66%, according to data from the January 2025 Preliminary Monthly Electric Generator Inventory. The total utility-scale battery storage capacity in the country reached over 26 gigawatts (GW) by the end of 2024. During the year, 10.4 GW of new battery storage capacity was added, making it the second-largest source of new generating capacity after solar energy.

Even though battery storage is growing quickly, it still made up only about 2% of the total 1,230 GW of utility-scale electricity generating capacity in the United States in 2024. However, battery capacity is expected to continue growing in 2025. Operators have reported plans to add 19.6 GW of utility-scale battery storage to the grid, which could set a new record for battery capacity growth.

Battery storage systems do not generate electricity on their own. Instead, they store electricity that is already produced by power plants or taken from the electric power grid. These systems act as secondary sources of electricity, helping to store and supply energy when needed.