It is obvious from a comparison of numerous common new energy sources, such as biomass, hydro, wind, and solar, that solar photovoltaic offers the following distinct benefits.
The economics of using solar energy can be viewed from two perspectives. First, solar energy is unlimited, and there is no "fee" on receiving it, so it may be utilized wherever. Second, at this point in technical progress, certain solar energy utilization is already cost-effective. The economics of solar energy utilization will become more clear as science and technology advances, as well as human development and solar energy technological advancements. If the twentieth century was the age of oil, the twenty-first century is the age of renewable energy (the century of solar energy).
With the large-scale application and promotion of solar photovoltaic power generation, especially the upstream crystalline silicon industry and photovoltaic power generation technology becoming more and more mature, the construction cost of each kW of solar photovoltaic power generation compared to crystalline silicon industry and photovoltaic power generation technology is becoming more and more mature, building roofs, facades, and other platforms of composite development and utilization, the construction cost of each kW of solar photovoltaic power generation compared to crystalline silicon
The sun produces about 1.6 x 1023 kW of energy each second, of which up to 8 x 1013 kW reaches the earth, which is equivalent to 6 x 109t of ordinary coal. According to this calculation, the entire quantity of solar energy reaching the Earth's surface in a year is around 1.892 x 1013 billion tonnes of standard coal, which is 10,000 times higher than the world's primary energy sources' present confirmed reserves. The sun has a life span of at least 4 billion years, which means that solar energy can be a constant supply of the Earth's time, which indicates that solar energy development and usage will be the most effective solution to tackle the shortage of conventional energy and human depletion.