The development of solar LED street lamp is the shortcut of using solar energy in China

Since international oil prices have soared, people have come to realize that oil is also an important source of energy. Recently, although oil prices plummeted, but the shadow of the past still cannot erase, coupled with the Somali pirates hijacked 310 thousand tons of super tanker Sirius in the recent an easy job to do, feel the energy pipeline vulnerability. Although China does not rely on oil to generate electricity, it imports more than 3.5 tons a year.

China's energy structure

The bigger problem is that China's energy structure is irrational (see table below).

coal

petroleum

waterpower

Natural gas

nuclear energy

70%

21%

5%

3%

1%

More than 70% of China's energy is dependent on coal. Coal and oil accounted for more than 90%. And these two kinds of energy plus natural gas are the culprit of carbon dioxide. So China's carbon dioxide emissions as early as 2006 has surpassed the United States to become the world's first. China's emissions are 6 billion 200 million tonnes, of which about $550 million comes from cement. The United States has 5 billion 800 million tonnes of emissions, of which about $50 million comes from cement. Although nuclear power does not produce carbon dioxide, it is not renewable energy, but also when it dries up. Although water is a renewable energy, but Chinese River most inclusions there are a large number of mud and sand, in the past have lessons from the Yellow River Sanmenxia, now the Three Gorges of the Yangtze River is uncertain, and the hydropower development quantity is limited. Even China's largest reserves of coal, it is very limited, the end of the century will be mined. At that time, all thermal power plants to put up the shutters.

Of all the sources of energy, the only one that is inexhaustible.

Two. Solar energy in China

Due to the geographical location of China, China has a lot of solar energy. The total annual solar radiation is 3340-8400 MJ/m2, the median is 5852 MJ/m2. From the distribution of the annual total amount of solar radiation, total solar radiation over the Tibetan Plateau and the northwest, North China, Northeast China, Yunnan, Guangdong, Hainan and other parts of the low latitudes is above 5000MJ/m2, is China's solar energy resource was abundant in the region. And the Yangtze River Basin and Sichuan, Guizhou and other Eastern and central regions of the solar energy resource conditions, total solar radiation in 5000 MJ/m2.

Three. China is a giant solar panel production, the use of dwarf

China in solar panel production accounted for first in the world, is expected in 2008 China solar cell production capacity will reach 2 GW or 2 million kw. Accounted for 27.5% of the world's solar panel production, ranking first in the world. However, China's own installed capacity is still very poor. At present, China's solar power is only about 80 thousand kilowatts, accounting for only about 0.01% of the total generating capacity. In other words, China produced 95% of the solar panels are exported, and only for their own use of 5%. The location of Germany is equivalent to China's Harbin to the latitude of Mohe County, its solar energy is only the worst of the fifth categories. The German power generation in 2007 has reached 2 million 700 thousand kilowatts, accounting for about 55% of the world's solar power generation, in 2008 also increased by 20%, ranking first in the world. And if the proportion of the total electricity generation from the point of view, it is further away. The proportion of solar power in Germany is now 14%. The German government attaches importance to.

China also plans to increase investment in renewable energy, including solar energy. But the amount of planning and growth are pitiful:

The following is China's 11th Five-Year plan:

Technical category

Planning target (10000 kW)

Key areas

1 small PV

Ten

Tibet, Gansu, Inner Mongolia, Ningxia and Xinjiang,

Urban roof system and large landmark building

Five

Beijing, Shanghai, Guangdong, Jiangsu and Shandong

Photovoltaic power station

Five

Stone forest, Lhasa, Dunhuang and Ordos

2 remote area power supply

Fifteen

Tibet, Qinghai, Gansu, Xinjiang, Yunnan and Sichuan

3 solar thermal power

Five

Inner Mongolia

Total

300 thousand KW

That is to say, China will have only 300 thousand kilowatts of solar power by 2010. Less than six of the solar panels produced in 2008. Development and Reform Commission also proposed that by 2020, only 1 million 800 thousand kilowatts of solar power generation, but also did not reach the total production of solar panels in 2008.

Why is there such a situation? Obviously this is not because Chinese backward in technology, the fundamental reason is: import and export, completely is the rules of the market economy in the dominant, foreign demand in this area, there is a market, so we can export in China is completely dominated by the planned economy, countries do not order, there is no market. This is the crux of China's solar power industry behind the problem.

Four. Ways to develop solar energy

In fact, it can be said that in many foreign countries, solar power is also dominated by the government, but also the planned economy. But they attach great importance to solar power. There are two main ways to develop solar power,