Wind energy is a clean source of energy. The wind energy facilities are improving day by day, and the cost of mass production is reduced. In the proper place, the cost of wind power generation is lower than that of other generators.

Wind energy is the kinetic energy generated by air flow. A form of conversion of solar energy. Due to the uneven heating of various parts of the earth's surface caused by solar radiation, the pressure distribution in the atmosphere is uneven. Under the effect of horizontal pressure gradient, the air moves along the horizontal direction to form wind. The total reserves of wind energy resources are very huge, and the energy that can be developed by technology in a year is about 5.3X10 ^ 13 kWh. Wind energy is a renewable clean energy with large reserves and wide distribution, but its energy density is low (only 1/800 of that of water energy) and unstable. Under certain technical conditions, wind energy can be developed and utilized as an important energy source.

At present, the use of solar energy is not very popular. There are still problems of high cost and low conversion efficiency in using solar energy for power generation, but solar cells have been used to provide energy for satellites.

Universal: The sun shines all over the earth, without geographical restrictions, whether on land or sea, whether on mountains or islands, there are everywhere, which can be directly developed and utilized, easy to collect, without mining and transportation.

Solar energy is generated by hydrogen and helium fusion of hydrogen atoms in the sun, which releases huge nuclear energy. It comes from the radiant energy of the sun. Most of the energy needed by human beings comes directly or indirectly from the sun. Plants release oxygen and absorb carbon dioxide through photosynthesis, and convert solar energy into chemical energy for storage in plants. Fossil fuels such as coal, oil and natural gas are also primary energy formed by the evolution of ancient buried animals and plants over a long geological period. The energy contained in the earth itself usually refers to the energy related to the thermal energy inside the earth and the energy related to the nuclear reaction.

Solar energy is a kind of renewable energy. It refers to the thermal radiation energy of the sun (see the three ways of thermal energy transmission: radiation), which is mainly represented by the sun's rays. In modern times, it is generally used to generate electricity or provide energy for water heaters.