Whether it is from the perspective of taking the road of economic and social sustainable development and protecting the ecological environment of the earth on which mankind depends, or from the perspective of solving the real energy supply for the world’s approximately 2 billion people without electricity and special purposes, development and utilization Both new energy and renewable energy are of great strategic significance.
(1) New energy and renewable energy are the cornerstones of the future energy of human society and are the alternative energy sources of fossil energy that are used in large quantities.
In today’s world energy structure, the energy used by mankind is mainly fossil energy. In 2009, the total global primary energy consumption was about 17.371 billion tons of standard coal, of which coal accounted for 27.2%, oil accounted for 32.9%, natural gas accounted for 20.9%, and the three accounted for 81%, nuclear power accounted for 5.8%, and hydropower accounted for 2.3%. Others account for 10.9%. With economic development, population increase, and social living standards, it is expected that the world’s energy consumption will increase at a rate of more than 3% per year in the future. By 2020, the world’s total primary energy consumption will be Reach 20 billion to 25 billion tons of standard coal or more. However, the global reserves of primary energy resources are limited. Among them, coal, oil, and natural gas, which account for about 80% of the world’s primary energy consumption, are non-renewable fossil energy sources. If they use a little less, they will gradually become exhausted. As of the end of 2010, the remaining proven reserves of coal in the world were 860.9 billion tons, with a reserve-to-production ratio of 118 years; oil was 188.8 billion tons, with a reserve-to-production ratio of 46.2 years; natural gas was 187.1 trillion cubic meters, with a reserve-to-production ratio of 58.6 years.
my country’s energy resource reserves are not optimistic. my country’s remaining economically recoverable coal reserves are 163.69 billion tons, oil is 2.16 billion tons, natural gas is 2.9 trillion cubic meters, and the three types of fossil energy recoverable reserves total 123.86 billion tons of standard coal, of which coal accounts for 94.4% and oil accounts for 94.4%. 2.5%, natural gas accounted for 3.1%. As of the end of 2010, my country’s coal reserve ratio was 35 years, oil was 9.9 years, and natural gas was 29.9 years, which is only equivalent to 29.7%, 21.4% and 49.5% of the world average. But what my country is facing is the serious challenge of exponential growth in energy demand. If the total population of my country is about 1.5 billion in 2050, the demand for primary energy will be 3.5 to 4 billion tons of standard coal, which is about 1.5 to 2 times the current total energy consumption in the United States, which will be the world’s primary energy consumption by then. 16%~22% of the total.
From the above analysis, it can be seen that in the long history of human development and utilization of energy, the period when fossil energy sources such as oil, natural gas, and coal are the main sources is only a short period. They will eventually be exhausted and replaced by new energy sources. . Mankind must plan ahead and seek new alternative energy sources as early as possible. Research and practice show that new energy and renewable energy resources are abundant, widely distributed, renewable, and do not pollute the environment. They are an ideal alternative energy recognized by the international community. According to the predictions of international authoritative organizations, by the 2060s, the proportion of global new energy and renewable energy will grow to account for more than 50% of the world’s energy composition, becoming the cornerstone of future energy for human society. The protagonist of the stage is the alternative energy source of fossil energy, which is currently widely used.
(2) New energy and renewable energy are realistic energy sources for more than 2 billion people without electricity in developing countries and for special purposes to solve the problem of power supply and energy use.
So far, there are still more than 2 billion people in developing countries in the world who have not yet had access to electricity. By the end of 2012, there were still more than 3 million people without electricity in my country. Due to lack of electricity, most of these people still live a life of poverty and backwardness, working at sunrise, resting at sunset, and far away from modern civilization. These places lack conventional energy resources, but are rich in natural energy resources, with a sparse population and low power load. Therefore, the development of new energy and renewable energy is an important way to solve their power supply and energy problems.
Some areas such as coastal and inland navigation aids, alpine weather stations, earthquake observation stations, forest fire monitoring stations, optical cable communication relay stations, microwave communication relay stations, border guard posts, oil and gas pipeline cathodic protection stations, etc., under special conditions without conventional power sources , Its power supply adopts new energy and renewable energy, does not consume fossil fuels, can be unattended, and is the most advanced, safe, reliable and economical.