In 2019, the Zhundong-Anhui ±1100 kV UHV DC transmission project was put into operation

On September 26, the ±1100 kV UHV DC transmission project from Zhundong to Southern Anhui was put into operation.

The Zhundong-Annan project is the world's highest voltage level, largest transmission capacity, longest transmission distance, and most advanced technology DC transmission project. The project starts in Changji Hui Autonomous Prefecture, Xinjiang, and ends in Xuancheng, Anhui. It passes through six provinces (autonomous regions) including Xinjiang, Gansu, Ningxia, Shaanxi, Henan, and Anhui. The transmission capacity is 12 million kilowatts and the total length of the line is 3,324 kilometers. The project has achieved a comprehensive improvement in DC voltage, transmission capacity, and AC grid voltage, and the economic transmission distance has been increased to 3,000 to 5,000 kilometers.

The project has the capacity to deliver 60 billion to 85 billion kilowatt-hours of electricity annually, which can effectively alleviate the medium- and long-term contradiction between power supply and demand in East China, and reduce coal consumption in East China by about 38 million tons per year. At the same time, the project can effectively promote the development and transmission of energy bases in the west and north, expand the scope of clean energy consumption, promote the transformation of local resource advantages in Xinjiang into economic advantages, and help Xinjiang achieve long-term stability and economic and social development.