The construction of the world’s largest high-capacity high-temperature superconducting magnetic energy storage (SMES) device has officially begun in the Cuixiang New Area of Zhongshan, Guangdong. This project is undertaken by Zhongshan Rural Electric Power Engineering Co., Ltd., a subsidiary of Southern Kaineng (Guangdong) Electric Power Group Co., Ltd. As part of a national key research and development plan, this initiative aims to create a 5MVA/10MJ superconducting magnetic energy storage system, which will significantly enhance the stability of power supply for advanced industries, paving the way for “millisecond-level” energy stability.
The project is located next to the 110 kV Binhai Substation on Future Avenue (formerly Cuihai Road) in Cuixiang New Area, with a total investment of 208 million yuan. It plans to construct a 5MVA/10MJ SMES system that includes four core modules: a series-type boost converter system, a parallel-type boost converter system, the superconducting magnetic energy storage system itself, and a cooling system along with high and low voltage switchgear for power distribution. The project is expected to be completed and operational by November 2025.
High-temperature superconducting energy storage technology is essential for advancing new power systems and achieving carbon neutrality goals. Once operational, this system will have a maximum output power of no less than 5 megawatts and a storage capacity of at least 10 megajoules. It will serve three primary functions: first, it will act as a “stabilizer” for city-level power grids, delivering power stability at the millisecond level—over ten times faster than traditional chemical energy storage, effectively meeting the demands of advanced industries for reliable power supply; second, it will function as a “regulating valve” for renewable energy integration, promoting efficient utilization of renewable resources with lower operational costs than low-temperature superconductors, thus offering broader application fields and higher commercial value; third, it will create a “demonstration window” for superconducting energy storage technology, fostering collaborative development across the industry chain and injecting robust momentum into the high-quality growth of cities.
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