ABB has won an order worth about $120 million to engineer and supply key equipment for the Jinping-Sunan 800-kV ultra-high-voltage direct-current (UHVDC) power transmission project of the State Grid Corporation of China (SGCC).

The system and key equipment will be designed in close cooperation with SGCC and local Chinese partners, and ABB will also supply key components for both converter stations, including converter valves, the control and protection system and DC yard equipment.

UHVDC is particularly suitable for large countries like China, where centers of high power consumption are often located far from the energy sources.

The 2,090-km (1,299-mile) power link will transport clean hydropower from Sichuan province in central-western China to the highly industrialized coastal area in the eastern province of Jiangsu. The UHVDC link will have a rated capacity of 7,200 MW and is expected to be energized in 2013.