National operational storage reached 52 GW in June 2026, with developers planning another 54 GW of capacity through 2028, according to the latest EIA data.
Utility-scale battery storage capacity in the United States grew at an average annual rate of 70% over the last three years, driven by rapid utility-scale solar deployment and wholesale price arbitrage, according to the latest Preliminary Monthly Electric Generator Inventory report from the U.S. Energy Information Administration (EIA).
The U.S. power grid closed 2025 with 43.6 GW of operational battery storage capacity. During the first six months of 2026, project developers brought an additional 8.3 GW online, pushing total nameplate storage capacity to nearly 52 GW.
Looking ahead, project developers report plans to bring another 54 GW of battery storage online over the next two and a half years. The planned pipeline includes 14 GW scheduled for the second half of 2026, 26 GW scheduled for 2027, and 14 GW scheduled for 2028.
Total national operational storage capacity is expected to pass 105 GW by the end of 2028.
