Reference News Network, March 7 report - According to the Bloomberg News website on March 4, in the global energy transition, China is quietly leading a key area: long-duration energy storage.
Traditional lithium-ion batteries usually have a storage duration of no more than four hours, while long-duration energy storage systems can store and continuously discharge for much longer periods, even lasting several days. With the increasing share of intermittent renewable energy in the global power supply, long-duration energy storage is crucial for balancing the grid's supply and demand. Currently, China has made significant progress in this field, surpassing other countries.
According to a report released by Bloomberg New Energy Finance on March 2, the global newly added long-duration energy storage capacity reached a record high of 9.6 gigawatt-hours in 2025, an increase of about 30% compared to 2024. The report pointed out that almost all long-duration energy storage projects completed in 2025 were located in China. Although a number of well-funded startups have emerged in Europe and the United States, such as Form Energy in the United States and Hydrostor in Canada, they have not changed this situation.
Bloomberg New Energy Finance analysts believe that China's established leadership in this field is mainly due to policy support. In 2023, China included long-duration energy storage as a key component in its carbon neutrality roadmap. The following year, the National Energy Administration released 56 new energy storage pilot demonstration projects, promoting rapid industry development. Additionally, China has also formed a significant leading advantage in multiple clean energy technologies, including photovoltaics and hydrogen energy.
According to statistics, the total scale of planned and under-construction long-duration energy storage projects worldwide has reached 422 gigawatt-hours, with 95% located in China, only 2% in the United States, showing a significant gap between the two countries.
Currently, the market share of long-duration energy storage remains relatively limited. According to data from Bloomberg New Energy Finance, the global newly added energy storage capacity in 2025 was approximately 247 gigawatt-hours, with most being lithium-ion batteries. (Translated by Zhu Li)
Original source: toutiao.com/article/7614330332715811366/
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