Definition of new energy
New energy is also called unconventional energy. It refers to various forms of energy other than traditional energy sources. Refers to energy sources such as solar energy, geothermal energy, wind energy, ocean energy, biomass energy and nuclear fusion energy that have just been developed or are being actively researched and are to be promoted.
The United Nations Conference on New Energy and Renewable Energy, held in 1980, defines new energy as: based on new technologies and new materials, the traditional renewable energy can be developed and utilized in a modern way. The renewed renewable energy replaces fossil energy with limited resources and pollution to the environment, focusing on solar energy, wind energy, biomass energy, ocean energy, geothermal energy and hydrogen energy.
New energy generally refers to renewable energy that is developed and utilized on the basis of new technologies, including solar energy, biomass energy, hydro energy, wind energy, geothermal energy, wave energy, ocean current energy and tidal energy, and between the ocean surface and the deep layer. In addition, there are hydrogen energy, biogas, alcohol, methanol, etc., and coal, oil, natural gas, hydropower, and other energy sources that have been widely used are called conventional energy sources. With the limited availability of conventional energy sources and the increasing environmental problems, new energy sources with environmental protection and renewable characteristics are receiving more and more attention from all countries.
Recently, in China, new energy sources that can form industries mainly include water energy (mainly small hydropower stations), wind energy, biomass energy, solar energy, geothermal energy, etc., and are clean energy that can be recycled. The development of new energy industry is not only an effective supplementary means for the entire energy supply system, but also an important measure for environmental governance and ecological protection, and is the ultimate energy choice to meet the sustainable development needs of human society.
Generally speaking, conventional energy refers to energy that is relatively mature in technology and has been used on a large scale. New energy usually refers to energy that has not been widely used and is being actively researched and developed. Therefore, coal, oil, natural gas, and large and medium-sized hydropower are regarded as conventional energy sources, and solar energy, wind energy, modern biomass energy, geothermal energy, ocean energy, nuclear energy, and hydrogen energy are used as new energy sources. With the advancement of technology and the establishment of the concept of sustainable development, industrial and domestic organic waste, which has been regarded as garbage in the past, has been re-recognized, and it has been deeply researched and exploited as a material for energy resource utilization. The resource utilization of waste can also be seen as a form of new energy technology.
The energy resources that are newly developed and utilized by human beings and need further research and development are called new energy sources. Compared with conventional energy sources, new energy sources have different contents in different historical periods and technological levels. In today's society, new energy usually refers to nuclear energy, solar energy, wind energy, geothermal energy, and hydrogen.
According to categories, it can be divided into: solar energy, wind energy, biomass energy, nuclear energy, hydrogen energy, geothermal energy, ocean energy, small hydropower, chemical energy (such as ether-based fuel).
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