China Southern Power Grid Corporation always insists on promoting core technology innovation and business model innovation, and early application of blockchain technology in the energy field. In Zhuhai, the Guangdong Power Grid Corporation Zhuhai Power Supply Bureau launched a pilot demonstration of a green card trading platform based on blockchain technology. In Shenzhen, Nanwang Electric Vehicle Co., Ltd. opened the first electronic invoice for charging electricity block blockchain on January 31 this year. As of yesterday, it has issued more than 5,000 pieces. It is expected that the electric travel service platform will be put into operation at the end of the year. Blockchain technology.