The vanadium redox flow energy storage system stands as an optimal solution for long-duration energy storage. Featuring intrinsic high safety free from fire or explosion risks, it boasts ultra-long cycle life and consistent stable performance. Suited for large-scale and long-hour energy storage applications with flexible adjustable discharge duration, the system requires easy operation & maintenance and is eco-friendly and durable. Widely deployed in wind-solar energy storage, grid peak shaving and power station backup power supply, it effectively facilitates renewable energy consumption and underpins the stability of the new-type power system.