China’s SGCC completes ±800 kV Baihetan–Jiangsu UHVDC project July 5, 2022 | Asia-Pacific News Chinese State Grid Corporation of China (SGCC) has completed the ±800 kV Baihetan–Jiangsu Ultra-High-Voltage (UHV) Power Transmission Project. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password