All the world countries develop the renewable energy resources due to many reasons. In 2000 Beijing used 31.81 billion KWH, 12.61% than in 1999. Of them the electricity for living occupies 15.01% of the total. In 1996 China's electricity installed capacity and generating capacity went up to the world second position. The consumption of energy increased greatly for generating power. In the world, the total energy consumption increased 68.7% and from 8.3 billion tons into 14 billion tons of standard coal. It estimates that in 2020 the consumption of standard coal will be 19.5 billion tons. It increases 1.35 times during the 50 years. According to the world energy forecast, the petroleum will dry up within 40 years, the natural gas will be consumed within 60 years and the coal can be last 220 years...

Experts say that China faces the grim problem on energy shortage and the proved per capita extraction of energy resource is limited. Being the second country in energy consumption, China will consume all the energies if using according to the level of developed countries in dozens of years...