Battery energy storage capacity has experienced extraordinary growth according to the Energy Institute’s 2026 Statistical Review of World Energy. Global installed battery capacity reached 301.7 gigawatts in 2025, up from 182.0 GW in 2024, representing a one-year increase of approximately 120 GW. Over the past decade, the expansion has been even more dramatic, with capacity increasing from just 1.9 GW in 2015 to current levels—representing a roughly 158-fold expansion at an average annual growth rate of approximately 66%.
The surge in battery installations is closely linked to the rapid expansion of solar power generation, which surpassed wind in global electricity generation for the first time in 2025. Solar energy’s intermittency creates a natural need for storage solutions, as electricity output peaks during daylight hours while demand continues after sunset. Battery systems address this limitation by storing electricity during periods of abundance and releasing it when needed, thereby supporting grid stability and enabling greater renewable energy integration.
China leads global battery deployment with approximately 144.1 GW of installed capacity at the end of 2025, representing nearly 48% of the worldwide total. The country added almost 64.6 GW during the year alone, accounting for more than half of all new battery capacity deployed globally. The United States ranked second with 56.6 GW, representing almost 19% of the total. Europe collectively held approximately 57.7 GW, with Germany leading European markets at 17.5 GW. China and the United States together account for roughly two-thirds of world installed battery capacity and supplied more than 70% of the increase in global capacity.
A notable shift has occurred in battery deployment patterns, with front-of-the-meter installations—utility-scale systems connected directly to electric grids—now accounting for approximately three-quarters of global battery capacity compared with behind-the-meter residential and commercial systems. Front-of-the-meter capacity increased roughly 72% in 2025, compared with about 51% growth for behind-the-meter systems, indicating that batteries are increasingly becoming pieces of utility infrastructure rather than merely distributed consumer installations.
While battery storage remains modest relative to traditional generating capacity, it represents a significant evolution in energy infrastructure. Batteries do not generate electricity but rather enable temporal shifting of power availability, allowing renewable energy sources to better match electricity demand patterns throughout the day and supporting broader grid integration of intermittent power sources.
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