China will start constructing a 10-gW wind farm in Jiuquan, Gansu province on Friday, the first in a batch of similar mega wind power projects the country has planned for over the next few years to increase the share of clean energy sources in its power consumption mix.

Wind power on-grid tariff has been fixed at 0.526 yuan per kWh for the first phase of 3.8 million kW by 2010, involving 19 power generating companies, Wang Jianxin, director of Jiuquan Development and Reform Commission told China Daily.

The province plans to expand its installed wind power capacity to 20 gW by 2020, surpassing even the 18.2-gW capacity of the Three Gorges Dam, the world's largest hydropower station in terms of total capacity.