According to the U.S. Energy Information Administration (EIA), utility-scale battery storage capacity in the United States grew at an annual average rate of 70% over the last three years. By the end of 2025, operational capacity stood at 43.6 gigawatts (GW). Operators added another 8.3 GW during the first six months of 2026, bringing the total nameplate battery storage capacity to nearly 52 GW.