Recently, the international standard proposal for "Supercapacitors for Energy Storage in Electric Power" proposed by China was successfully approved by the International Electrotechnical Commission, marking the successful completion of the entire industry chain of research and development, production, and application of supercapacitors for energy storage in China. This will strongly support the implementation of China's "dual carbon" strategy and the construction of new power systems, and also provide a standardized solution for the future global energy storage market in China. This proposal is led by experts from China Huaneng Xi'an Thermal Power Research Institute and has received strong support from countries such as Germany, Japan, and Finland. It is the world's first international standard for supercapacitors applied in the field of power storage. Supercapacitors have excellent electrical characteristics, long cycle life, good environmental adaptability, and high levels of safety and stability. They have the potential to replace lithium-ion batteries in the field of power storage, especially in power frequency regulation, smoothing power fluctuations, and improving power quality. At present, China is at the forefront of supercapacitor energy storage technology in the world. It has successfully built the world's first 5-megawatt supercapacitor thermal storage frequency modulation demonstration project and the world's largest 16 megawatt full supercapacitor energy storage frequency modulation demonstration project. The installed capacity of global energy storage supercapacitors has now exceeded 1 gigawatt and is growing rapidly. It is expected that the scale of global energy storage supercapacitors will reach 5-10 gigawatts by 2030. The relevant person in charge of the State Administration for Market Regulation stated that this international standard is based on the technical route and application status of supercapacitors in the field of electric energy storage. It analyzes the gaps and shortcomings of existing international standards for supercapacitors in the field of electric energy storage, and proposes future standard planning suggestions, which will play a positive role in promoting the standardization development of supercapacitors for energy storage worldwide. (Reporter Li Chunjian)