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Beijing, 16 July – China now operates the world’s largest battery energy storage fleet, and new analysis from Ember shows there is still headroom to do more with it. Used to its full potential, China’s utility-scale batteries could have shifted an additional 23 TWh of clean electricity in 2025 to the hours when the power system needs it most. This is equivalent to roughly powering Singapore’s entire economy for five months. Realising that potential means putting a massive fleet built at record speed to work as a multitool for a power system increasingly built on wind and solar.
China’s speed of battery build-out has no global parallel. In December 2025 alone, China added 18.76 GW/65.46 GWh of “new energy storage”, exceeding the full-year additions of the United States, the world’s second-largest market. By the end of 2025, China accounted for over half of global battery energy storage system (BESS) capacity. By the first quarter of 2026, the country had installed almost 150 GW of lithium-ion BESS. In June 2026, China raised its 2030 target for “new energy storage” to 300 GW.
