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SNingxia Hunan ± 800 kV High Voltage Direct Current Transmission Project

The Ningxia–Hunan ±800 kV Ultra-High Voltage Direct Current (UHVDC) transmission line project is China's first UHVDC transmission corridor primarily designed to deliver renewable energy from "deserts, Gobi, and barren lands" wind and solar power mega-bases. It starts from the Zhongning Converter Station in Zhongwei City, Ningxia, and ends at the Hengyang Converter Station in Hunan, passing through six provincial-level regions (autonomous regions and municipalities): Ningxia, Gansu, Shaanxi, Chongqing, Hubei, and Hunan. The total line length is approximately 1,633.5 kilometers, with a rated voltage of ±800 kV and a designed transmission capacity of 8,000 megawatts . As a key project of the 14th Five-Year Plan for Electric Power Development, it is supported by a supporting power source installed capacity of 17,640 megawatts. After commissioning, it will deliver 36 to 40 billion kilowatt-hours of electricity to Hunan annually, of which the share of renewable energy will exceed 50%.

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