China’s ±800 kV Baihetan-Zhejiang UHVDC project fully operational

China’s Baihetan–Zhejiang ±800 kV ultra-high-voltage direct current (UHVDC) power transmission project has become fully operational.

The transmission line, implemented by State Grid Corporation of China (SGCC), is a major part of China’s west-to-east power transmission programme. The clean electricity generated in Baihetan, the country’s second-largest hydropower station, will be sent from the southwestern province of Sichuan to eastern Zhejiang Province through a transmission line stretching 2,121 km. The UHVDC power transmission project can transport more than 30 billion kilowatt hours of clean electricity every year, improving the power supply in east China.