Definition of new energy
The "United Nations Conference on New and Renewable Energy" held by the United Nations in 1980 (the year of Gengshen) defined new energy as: based on new technologies and new materials, the traditional renewable energy can be modernized and utilized, and the Inexhaustible and recurring renewable energy replaces fossil energy with limited resources and polluting the environment, focusing on the development of solar energy, wind energy, biomass energy, tidal energy, geothermal energy, hydrogen energy and nuclear energy (atomic energy)
New energy generally refers to the renewable energy developed and utilized on the basis of new technology, including solar energy, biomass energy, wind energy, geothermal energy, wave energy, ocean current energy and tidal energy, as well as thermal cycle between the ocean surface and the deep layer, etc. In addition, there are hydrogen energy, biogas, alcohol, methanol, etc., and the widely used coal, oil, natural gas, water energy and other energy sources are called conventional energy. With the limitation of conventional energy and the increasingly prominent environmental problems, the new energy with environmental protection and renewable characteristics has been paid more and more attention by all countries.
New energy that can form an industry in China mainly includes hydropower (mainly refers to small hydropower stations), wind energy, biomass energy, solar energy, geothermal energy, etc., which are recyclable and clean energy. The development of the new energy industry is not only an effective supplement to 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 needs of sustainable development of human society.
Generally speaking, conventional energy refers to energy that is relatively mature in technology and has been used on a large scale, while new energy usually refers to energy that has not been used on a large scale and is being actively researched and developed. Therefore, coal, oil, natural gas and large and medium-sized hydropower are regarded as conventional energy sources, while solar energy, wind energy, modern biomass energy, geothermal energy, ocean energy and hydrogen energy are regarded as new energy sources. With the advancement of technology and the establishment of the concept of sustainable development, industrial and domestic organic wastes, which have been regarded as garbage in the past, have been re-understood, and have been deeply researched and developed as a material for energy resource utilization. Therefore, The resource utilization of waste can also be regarded as a form of new energy technology.
The energy resources that have only recently been developed and utilized by human beings and need to be further researched and developed are called new energy sources. Compared with conventional energy sources, new energy sources have different contents under different historical periods and technological levels. In today's society, new energy usually refers to solar energy, wind energy, geothermal energy, hydrogen energy, etc.
According to the category, it can be divided into: solar energy, wind energy, biomass energy, hydrogen energy, geothermal energy, ocean energy, small hydropower, chemical energy (such as ether-based fuel), nuclear energy, etc.
