China's wind energy enrichment zone investigated and estimated the country's wind energy resources in 2006. The total reserves of China's wind energy resources reached 4.35 billion kilowatts, of which 297 million kilowatts can be developed technically, with a technically exploitable area of about 200000 square kilometers. China's geographical conditions are complex, with different wind power densities and different abundance of wind energy resources. According to the national standard of the people's Republic of China, wind energy resources are divided into different grades. The higher the grade, the greater the wind power density. Therefore, it is estimated that there are about 2.38-3.8 billion kw of potential development of wind energy resources in China's land area for grid connected wind power generation, and 1.56-1.93 billion kw of potential development of wind energy resources for off grid wind resources. China's wind energy resource rich areas are mainly distributed in the northern and coastal wind zones. The areas suitable for large-scale grid connected wind power generation are mainly distributed in Inner Mongolia, Songyuan and Baicheng of Jilin, Fuxin of Liaoning, Jiuquan of Gansu, Hami and Turpan of Xinjiang, Zhangbei and Chengde of Hebei, as well as coastal areas; Yili in Xinjiang, around Qinghai Lake, central Gansu, Yulin in Shaanxi, Datong in Shanxi, Zhaotong in Yunnan, Qujing and Liupanshui in Guizhou are also rich in wind energy resources. China's offshore wind energy resources are most abundant in the coastal waters of Fujian, southern Zhejiang and Guangdong, followed by Hainan, Northern Zhejiang, Jiangsu, Beibu Gulf and Bohai Bay.