State Grid Corporation (State Grid), the world’s largest utility company, last week kick-off the construction of two ultra-high voltage (UHV) power transmission projects in China as part of efforts to ensure clean electricity supply.
With a total investment of ¥10.9 b and a total length of 525 km, the two 1,000-KV projects will link the eastern cities of Fuzhou and Xiamen, and the central cities of Zhumadian and Wuhan.
Industry experts pointed out that long-distance power transmission plays a crucial role in China’s renewable power expansion. China has set down the strategy to develop large centralized renewable bases in remote and deserted lands in the western provinces, which are generally far away from power demand centers.
State Grid previously stated that since the 14th Five-Year Plan period, the company’s cross-regional power transmission channels have gradually achieved full power transmission, increasing the power transmission capacity by 35.27 GW. The company plans to build seven UHVs, with an additional power transmission capacity of 56 GW. By 2025, the inter-provincial and inter-regional power transmission capacity of the company’s operating areas would reach 300 GW, and the proportion of renewable energy transmission would reach 50%. By 2030, the company’s inter-provincial and inter-regional power transmission capacity would increase to 350 GW.
So far, the State Grid has built 29 UHV projects, with a total length of lines in operation or under construction reaching 46,000 KM. The cumulative power transmission exceeds 2500 TWh.