Solar energy is ubiquitous and its total amount is enormous. People can access this zero-emission, zero-pollution, sustainable and clean energy source at a fraction of the cost!
Since solar energy is ubiquitous, it is one of the main sources of energy for the future of mankind to bring together the scattered energy. However, the solar energy we are talking about here refers to the photoelectric, photothermal and photochemical direct conversion of solar radiation energy. In particular, photovoltaic conversion, i.e., solar photovoltaic power generation, is the most promising energy technology. The solar energy can be used in off-grid, on-grid and hybrid solar systems.
First, the technical principle is the most advanced.
The principle of solar photovoltaic power generation is simpler and faster than that of other energy sources. Solar energy, on the other hand, is directly converted from photon motion to electron telemotion, a direct conversion from light to electricity. This means that the principle of photovoltaic power generation is the simplest and most advanced.
Second, the total amount is huge.
It is estimated that the daily solar energy received on the surface of the Earth is equivalent to the energy produced by 100 million barrels of oil, and that even if the sun shines on the Earth for just one hour, the energy accumulated will be enough for human consumption for one year.
Moreover, this huge ball of fire has been boiling for nearly 5 billion years. According to physicists predict that the life of the sun is about 10 billion years, so the sun can also shine on the earth for 5 billion years. Solar energy is almost “eternal energy”.
Thirdly, it is widely distributed.
The term “sunshine” describes the attributes of solar energy with particular precision. Compared to other energy sources, solar energy is the most accessible and equitable.
China’s annual sunshine hours of more than 2,000 hours of the region accounted for more than two thirds of the total land area, with good conditions for the use of solar energy. This is even the “wide distribution” known as wind energy can not be comparable, not to mention oil, coal and other traditional energy sources.
Fourth, the most important raw material for photovoltaic power generation, “silicon”, is also very abundant.
China is rich in silicon resources, the northeastern Tibetan Plateau, Jiangsu East China Sea, Henan Yanshi, Ningxia Shizuishan, Hubei Yichang, Sichuan Leshan and Guangyuan, Yunnan Zhaotong and other areas are the existence of reserves of ten million tons or even more than a hundred million tons of giant silicon mines, at the same time, almost all over the country are found in high-grade silicon oxide containing mines.
Fifth, the application scene is very wide.
Not only can centralized power stations be constructed, but also power generation can be carried out through the construction of distributed small power stations and even the installation of battery modules on the roof of each household. Solar photovoltaic power generation can be applied in many fields such as aerospace, transportation, agriculture, construction, military, and urban lighting.
Even in deserts and islands far away from human habitation, they will be brightly lit because of photovoltaic power generation.
These attributes determine that solar photovoltaic power generation has a huge development potential. It is the first protagonist of clean energy.