Since the reform and opening up, China has undergone tremendous changes. The rapid development of these decades has gradually brought our lives into a well-off society. But behind the economic boom, we also paid a price. In the process of development, our living environment has been polluted, water pollution, air pollution and so on. It is in such an environment that the voice of protecting the environment is getting higher and higher, and clean energy is also reawakened at this time, and is more used in industry and people's lives. The current clean energy sources mainly include the following:

The first type is solar energy. Solar energy mainly uses a "silicon" material to convert light energy into other energy, and does not produce other harmful substances during the conversion process. It is a green and pollution-free energy source. At present, solar energy is widely used in people's lives, such as solar water heaters, solar street lamps, and some solar concept cars.

The second is wind energy. The wind is generated due to the difference in temperature after the sun irradiation and the difference in the content of water vapor in the air, thus causing a difference in the local pressure. When the high-pressure air flows to the low-pressure area in the horizontal direction, the wind is generated. Wind energy resources are greatly affected by the topography. Many wind power plants are now built on the mountain, and the wind is converted into electricity through rows of windmills. In nature, wind is a renewable, pollution-free and resource-rich source of energy. With the global warming and energy crisis, countries are stepping up the development and utilization of wind power. However, in the conversion of wind energy, there is no car brand involved in the moment.

The third is bioenergy. Among the many clean energy sources, this energy is the most unique, it can be converted into conventional solid, liquid and gaseous fuels. It mainly uses agricultural and forestry by-products and processing residues, as well as processed biofuels. This is also the main development direction of clean energy in the future.

Clean energy also includes hydrogen, ocean energy, geothermal energy, and water energy. These renewable energy sources do not have the potential for energy depletion, and are therefore increasingly valued by many countries, especially those with energy shortages.