A 100-megawatt-class semi-solid-state lithium-ion battery energy storage project has been connected to the grid in Guangdong Province.

The project is invested and constructed by the Guangdong Branch of China Huadian Corporation Limited, with EPC general contracting undertaken by the Guangdong Electric Power Design Institute Co., Ltd. of China Energy Engineering Group. As one of the core suppliers of energy storage equipment, Guangdong Tianhui Energy Storage Technology Co., Ltd. (referred to as “Tianhui Energy Storage”) successfully delivered a total of 55 MW/110 MWh of energy storage systems for the project, providing a hybrid energy storage solution that combines semi-solid-state lithium-ion and sodium-ion technologies. This grid connection marks the first large-scale engineering application of Tianhui Energy Storage’s 100 MW-class, high-capacity semi-solid-state lithium-ion battery energy storage system—the fifth batch of China’s National Energy Administration’s first-of-its-kind major technical equipment in the energy sector. It has thus completed a full closed-loop process, from technology development to 100 MW-level grid-scale validation, providing crucial empirical evidence for the wider deployment of this highly safe technological approach. After the project is put into operation, it will serve as critical infrastructure for enhancing grid resilience and flexibility, providing robust peak-shaving support to the regional power grid, and effectively facilitating the efficient integration of new energy sources. It will also set a positive example for building a safer, more flexible new-type power system. Tianhui Energy Storage stated that it will take this successful grid connection as an opportunity to continuously deepen innovation in electrochemical energy-storage system integration and safety technologies, thereby contributing its expertise to the energy transition and the development of a new type of power system.