On December 12th, the Inner Mongolia Energy Group's 400MW/1.600MW independent energy storage project in Dengkou County successfully connected to the grid and completed its first batch of energy storage unit charge and discharge cycles. This marks a significant increase in the total capacity of the Inner Mongolia Energy Group's Dengkou energy storage power station to 1.005MW/3.01MW, making it the world's largest operational energy storage power station to date.

The project employs a hybrid technology route combining vanadium redox flow batteries and lithium iron phosphate batteries, offering the dual advantages of long-term energy storage and rapid response. The vanadium redox flow battery energy system, as a key technology demonstration project under the Inner Mongolia Autonomous Region's "open competition for key projects" initiative, aims to achieve a single-cell rated current density of 500mA/cm²@80% and a system energy efficiency exceeding 72%, significantly surpassing relevant industry battery performance standards and providing important guidance for the rational design of flow batteries. Since its commencement, the project completed all main construction and grid connection commissioning in just over two months. From obtaining all necessary permits to grid connection, it took only 139 days, and from the official start of construction to grid connection for charging and discharging, only 80 days. Upon completion, the Dengkou Energy Storage Power Station will have a total capacity of 1,005 MW/3,010 MW, making it the world's largest operational energy storage power station.

Energy storage power stations possess the dual attributes of load and power source. They can both peak shaving and valley filling, supporting the power grid, and promote the consumption of new energy sources and improve the utilization rate of wind and solar power. They are key to achieving integrated development of electricity with energy consumption, industry, and the power grid.

The new energy company has already built photovoltaic projects with an installed capacity of 4.45 million kilowatts in Dengkou County. After the completion and commissioning of the 400,000 kilowatts/1.6 million kilowatt-hour independent energy storage project in Dengkou County, it will significantly improve the region's new energy absorption capacity and power system stability, provide greater development space for sand control and wind power-photovoltaic integrated projects, and provide key support and demonstration model for Inner Mongolia Autonomous Region to build a "new power system integrating source, grid, load and storage".