U.S. Battery Storage Capacity Rose By 66 Percent During 2024: EIA

Cumulative utility-scale battery storage capacity in the U.S. surpassed 26 gigawatts (GW) during 2024, according to a March 12 report published by the U.S. Energy Information Administration. Operators increased battery storage capacity by 10.4 GW during 2024, the second largest generation capacity addition, after solar. Despite the significant increase in battery storage capacity during 2024, it still accounts for only two percent of the total 1,230 GW of U.S. utility scale electricity generating capacity.

The U.S. power grid is expected to add 63 GW of new utility scale electric generating capacity during 2025, about 30 percent higher compared to the 48.6 GW of capacity installed during 2024. The increase in new utility scale electric generating capacity is expected to be driven by additions to solar and battery storage. Solar is the fastest-growing renewable source due to larger capacity additions and favorable tax credits policies. U.S. solar capacity has risen significantly since 2010, with the exemption of 2022 when solar additions fell by 23 percent year on year in 2022 due to supply chain interruptions and other COVID-19 associated challenges. Solar technological advancements have been incentivized by the previous administration. During September 2024, the U.S. Energy Department announced $40 million to bolster solar manufacturing, expand photovoltaic recycling, and foster new markets for solar technologies.

Capacity growth from battery storage is expected to hit a record high during 2025. Generators project plans to add 19.6 GW of utility-scale battery storage to the electricity network. Battery storage is helping operators to balance demand and supply and improve grid stability, amid higher renewable energy growth. Battery storage adds stability to variable energy sources such as wind and solar. Wind and solar are both intermittent resources; they can only provide electricity when the wind is blowing or when sunshine is available. Batteries solve the intermittency problem by storing extra energy produced by wind or solar generators for use later.