Strong growth occurred for utility-scale battery projects, behind-the-meter batteries, mini-grids and solar home systems for electricity access, adding a total of 42 GW of battery storage capacity globally.
A Battery Energy Storage System (BESS) is a sophisticated setup that stores surplus electricity in rechargeable batteries, usually lithium-ion, and supplies it back to the grid or users when required. BESS mitigate issues such as peak loads, frequency stabilization, and excess renewable energy (waste.energy.gov).
Battery capacity is the amount of energy a battery can store, typically measured in ampere-hours (Ah) or watt-hours (Wh). Ampere-hours indicate the total charge a battery can deliver at a specific current over time, while watt-hours provide insight into the energy stored, factoring in voltage.
Data source: U.S. Energy Information Administration, Preliminary Monthly Electric Generator Inventory, January 2025 In the United States, cumulative utility-scale battery storage capacity exceeded 26 gigawatts (GW) in 2024, according to our January 2025 Preliminary Monthly Electric Generator Inventory.
Strong growth occurred for utility-scale battery projects, behind-the-meter batteries, mini-grids and solar home systems for electricity access, adding a total of 42 GW of battery storage capacity globally.
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