Clean energy, that is, green energy, refers to energy that can be directly used in production and life without discharging pollutants, including nuclear energy and "renewable energy". Types include: hydropower, wind energy, solar energy and tidal energy. Therefore, nuclear power is a kind of clean energy.

Traditionally, clean energy refers to environmental protection energy, that is, environmental protection, less emissions and less pollution. However, this concept is not accurate enough, and it is easy to be mistaken for the classification of energy, thinking that energy is clean and unclean, thus misunderstanding the original intention of clean energy. The accurate definition of clean energy should be: the technical system of clean, efficient and systematic application of energy.

Advantages of solar clean energy:

1, long time

According to astronomical research results, the solar system has existed for about 5 billion years. According to the total power of solar radiation and the total hydrogen content on the sun, solar energy resources can be used continuously for 60 billion years. For the age of human existence, it is really inexhaustible.

2, clean and safe:

Solar energy is called clean energy and safe energy. It is not only pollution-free, far cleaner than conventional energy, but also non-dangerous and much safer than nuclear energy.

3, shine on the earth:

Solar radiation energy needs neither mining nor excavation, let alone transportation. All over the world, mountains, islands, continents and oceans are treated equally, there is no patent at all, and it is impossible to monopolize, so the development and utilization are extremely convenient.