In late December 2025, the world’s largest single-site electrochemical energy storage power station—the 4 GWh Envision Jingyi Chagan Hada Energy Storage Power Station—was successfully connected to the grid. The milestone marked the completion and grid connection of Envision’s 12.8 GWh energy storage cluster in Inner Mongolia.

In addition to the flagship project, Envision has developed energy storage facilities across multiple locations in Inner Mongolia, including Bayannur, Ordos, Hohhot, Ulanqab, Xilingol League, and Alxa League. Together, Envision-led energy storage projects in the region now exceed 14 GWh in total capacity. To support local deployment, the company has established a comprehensive industrial chain in Inner Mongolia, covering battery cell manufacturing, system integration, project delivery, and intelligent operation.

In early January, Envision reported that the 4 GWh flagship project successfully passed grid verification at rated power, completing “three charge and three discharge” tests as well as a 72-hour continuous trial operation on the first attempt. This makes it the largest energy storage project in China to complete such testing.

The achievement sets new global benchmarks for energy storage cluster scale and grid-connection speed, while also highlighting Envision’s capabilities in ultra-large-scale system integration, extreme-environment adaptability, deep grid interaction, and large-scale project delivery.