300 MW/1,200 MWh grid-forming hybrid energy storage facility in Inner Mongolia enters commercial operation

The project integrates lithium-ion and vanadium flow battery technologies, specifically lithium iron phosphate and vanadium flow batteries. It uses grid-forming power-conversion systems supplied by Sineng Electric, each at 1.25 MW. The system can provide power support, virtual inertia and damping support during grid disturbances, and black-start functions during outages. The facility is part of a 3 GW/12.8 GWh energy storage buildout in the Inner Mongolia region known as the Gushanliang energy storage power station. Performance validation testing was via a three-charge/three-discharge process. The project covers approximately 73 hectares. On December 30, 2025, the project was in testing. The facility will be connected to the 500kV Gushanliang substation, serving industrial and residential users in Ordos and western Inner Mongolia, and connected to broader northern China. Quotes: "integrating lithium-ion and vanadium flow battery technologies.", "The project uses a combination of lithium iron phosphate and vanadium flow batteries", "It uses grid-forming power-conversion systems supplied by Sineng Electric, each at 1.25 MW.", "The system can provide power support, virtual inertia and damping support during grid disturbances, and black-start functions during outages.", "The facility located in the Kubuqi Desert is part of a 3 GW/12.8 GWh energy storage buildout in the Inner Mongolia region known as the Gushanliang energy storage power station.", "Performance validation testing was said to be via a three-charge/three-discharge process.", "Covering approximately 73 hectares)", "On WeChat, Hunan Corun New Energy announced on December 30 2025, that the project was in testing", "According to Chinese media reports, the facility will be connected to the 500kV Gushanliang substation, serving industrial and residential users in Ordos and western Inner Mongolia. It will also be connected to broader northern China."