After 1992, the Chinese government presented environment and development strategy, asking for developing and spreading clean energy such as solar energy, wind energy, geothermal energy, tidal energy,
biomass and other clean energy according to local conditions. Chinese government formulated the wind power, solar energy development projects and programs, named ‘wind project’ and ‘bright project’ [4]. However,
the development of renewable energy in China is very slow because of the insufficient fund investment. The production capacity of solar photovoltaic technology was just 4.5MW and the equipment capacity of wind power
only was 567MW in China at the end of 2003[5,6]. It is far behind developed countries. For instance, wind energy conversion equipment capacity was 14609MW in Germany. Therefore, the Commission of National
Development and Reform proposed that by 2020, wind power capacity should reach to 30000MW, about 2% of the total installed capacity of power generation.