In the first step of a nationwide effort to fully assess China's wind resources, 19 wind measuring masts will be installed in the Hexi Corridor and Baiyin and Qingyang Cities in Gansu, Northwest China, says the Gansu Meteorological Bureau. Two of the masts will be 100 metres tall and the rest 70 metres. Across the country, in its most wind-rich areas, China plans to install a total of 400 meteorological masts that will collect wind data over a two year period. The project is slated for completion in 2011. The government hopes to establish a system that functions as a professional wind energy observation network, which can be used for numerical simulation and overall appraisement of wind resources. After taking into account conditions such as land use, transportation and power grids, it then hopes to identify sites for 50 GW of wind power.