China's first large-scale sodium-ion battery energy storage facility officially began expanded operation on Wednesday in Nanning city, south China's Guangxi Zhuang Autonomous Region. After the second-phase expansion, the Fulin station can now support up to 600 charge-discharge cycles per year, integrating about 30 million kilowatt-hours of wind and solar power into the grid annually.

The project is expected to bring significant environmental benefits, cutting carbon dioxide emissions by 13,500 tonnes a year and meeting the annual electricity needs of about 20,000 households.