Solar photovoltaic power generation will occupy an important position in the world energy consumption in the near future, which will not only replace some conventional energy sources, but also become the main body of the world energy supply.
It is predicted that by 2030, the proportion of renewable energy in the total energy structure will exceed 30%, and the proportion of solar photovoltaic power generation in the world's total power supply will exceed 10%.
The current situation in China:
Allocation of resources
China is rich in solar energy resources, with theoretical reserves of 65.438+0.7 trillion tons of standard coal per year. The potential for the development and utilization of solar energy resources is very broad. China is located in the northern hemisphere, with a distance of over 5,000 kilometers from north to south and from east to west.
There are abundant solar energy resources in China's vast land. In most areas, the annual average daily radiation amount is above 4 kWh per square meter, and the maximum daily radiation amount in Tibet is 7 kWh per square meter. The annual sunshine hours are more than 2000 hours. Compared with other countries in the same latitude, it is close to the United States and much superior to Europe and Japan, so it has great development potential.
Development situation
China's photovoltaic power generation industry started in the 1970s and entered a period of stable development in the mid-1990s. The output of solar cells and modules has increased steadily year by year. After more than 30 years of hard work, it has ushered in a new stage of rapid development. Driven by national projects such as "Bright Project" and "Sending Electricity to the Countryside" and the world photovoltaic market, the photovoltaic power generation industry in China has developed rapidly.
By the end of 2007, the cumulative installed capacity of photovoltaic system in China has reached 654.38+10,000 kilowatts (100MW), and there are more than 50 enterprises engaged in solar cell production. The production capacity of solar cells has reached 2.9 million kilowatts (2900MW), and the annual output of solar cells has reached 654.38+065.438+088 MW, surpassing Japan and Europe, and has been initially built.
In particular, the production of polysilicon materials has made great progress, breaking through the annual output of 1000 tons, breaking through the bottleneck of solar cell raw material production, and laying the foundation for the large-scale development of photovoltaic power generation in China. 2007 is a year of rapid development of solar photovoltaic industry in China. Benefiting from the long-term interests of the solar energy industry, the entire photovoltaic industry has seen an unprecedented investment boom.
Refer to the above content: Baidu Encyclopedia-Solar Photovoltaic Power Generation