Qinghai transmits 1.64 bln kwh of electricity to Tibet (4/4)

A worker of China's State Grid checks equipments at a convertor station in Golmud, northwest China's Qinghai Province, Feb. 20, 2014. After being put into test operation in Nov. 11, 2011, the Qinghai-Tibet AC-DC Interconnection Project has transmitted 1.64 billion kwh of electricity to Tibet Autonomous Region. (Xinhua/Zhang Hongxiang)