The Gansu wind farm complex will reach an installed capacity of 5.16 GW by the end of 2010 and 12.71 GW by the end of 2015, according to Wu Shengxue, deputy head of the Jiuquan Municipal Development and Reform Commission.

"The installed capacity will eventually reach 40 GW," he said. "Total costs on the project are predicted to exceed 120 bn yuan ($17.6