The Sun is the source of all life on Earth. There is a saying called: "all growth depends on Sun," If there is no sun shines, there would be no humans, there will be no other living creatures. The Sun provides energy to the Earth, creating all of Earth, I would say that without the Sun there would be no earth.
Sun light radiation to reach the Earth's surface is equal to the energy of approximately 250 million barrels of oil a year total amount of solar energy reaching the Earth's surface is currently more than 10,000 times the major energy reserves in the world. Solar energy without giving it to the Earth, mankind should bring this inexhaustible clean energy use, but the Sun's radiation to earth energy less than 0.1% by human conscious direct use. Through protracted and unremitting efforts, the use of solar energy in the second half of the 20th century, there has been significant progress, the current use of the clean energy commercialization is rapidly entering into long-term. The use of solar energy-thermal, light-and-chemical three categories, in addition to the thermal use of solar energy (mainly the solar water heater is very mature), solar photovoltaic utilization of rapid development as the scale of the solar cell manufacturing process. In the United States, Germany, France, Japan and other advanced countries, a large number of homes use solar electricity, solar photovoltaic power generation has become an industry, internationally called ' sunshine industries '. According to energy expert forecast: in primary energy such as oil, coal and natural gas depletion of this century, from the point of view of energy security and energy strategy, solar photovoltaic power generation is undoubtedly an ideal alternative energy, estimated that 50 of the century, solar power will account for 20% per cent of total global consumption. Endless, inexhaustible solar energy industry, the rapid development in the 21st century.
China's vast territory, abundant sunshine and bright prospects for optical use. Photovoltaic power generation in China has started relatively late, light battery production scale is too small, high production costs, and photovoltaic power generation gap is still large compared to advanced countries. It is because of the status quo, solar photovoltaic industry development and space is very broad, we are now entering the field, positive for the time being.
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