China's installed capacity of wind power will hit 10 million kilowatt this year, and the figure is expected to double in 2010, a senior official said on Sunday.

To develop clean energy, China will expand the installed capacity of nuclear power, making it account for more than 5 percent of the national total power installed capacity by the year 2020, said vice chairman of the National Development and Reform Commission Zhang Guobao.

China has vowed to develop nuclear power in its 11th five-year program for economic and social development (2006-2010), with the aim to realize 40,000 megawatt of operating installed capacity by 2020.

Currently, China's operating installed capacity of nuclear power stations stands at 8,600 megawatt.