On June 29, the bipolar low-end power transmission of the ±800 kV UHV DC transmission project from Ningxia to Hunan (hereinafter referred to as the "Ningxia-Hunan Project") of State Grid Corporation of China commenced, with a power transmission capacity of 4 million kW. The Ningxia-Hunan Project is China's first approved UHV transmission corridor primarily for transmitting new energy from large-scale wind and PV power bases in the "desert, gobi, and barren land" areas. The project has a rated voltage of ±800 kV and a rated capacity of 8 million kW. It starts from the Zhongning Converter Station in Zhongwei City, Ningxia Hui Autonomous Region, passes through Gansu, Shaanxi, Chongqing, and Hubei, and ends at the Hengyang Converter Station in Hengyang City, Hunan Province. The total length of the transmission line is 1,616 kilometers, with a total investment of 28.1 billion yuan. It is expected that the bipolar high-end DC system will commence power transmission in September, at which time the entire project will be completed and put into operation, with a power transmission capacity of 8 million kW.