What is the efficiency of solar photovoltaic power generation?

The power generation rate is good. The solar photovoltaic power generation process is simple, with no mechanical rotating parts, no fuel consumption, no emissions including greenhouse gases, no noise and no pollution. Solar energy resources are widely distributed and inexhaustible.

therefore, compared with new power generation technologies such as wind power generation, biomass power generation and nuclear power generation, photovoltaic power generation is a renewable energy power generation technology with the most ideal characteristics of sustainable development (the richest resources and the cleanest power generation process), which has the following main advantages.

① The solar energy resources are inexhaustible, and the solar energy irradiated on the earth is 6 times more than the energy consumed by human beings at present. Moreover, solar energy is widely distributed on the earth. As long as there is light, photovoltaic power generation systems can be used, regardless of geographical and altitude factors.

② solar energy resources can be obtained everywhere, and can be supplied nearby without long-distance transmission, thus avoiding the power loss caused by long-distance transmission lines.

③ The energy conversion process of photovoltaic power generation is simple, which is the direct conversion from light energy to electric energy. There is no intermediate process (such as the conversion of thermal energy to mechanical energy, mechanical energy to electromagnetic energy, etc.) and mechanical movement, and there is no mechanical wear. According to thermodynamic analysis, photovoltaic power generation has a high theoretical power generation efficiency, which can reach more than 8%, and its technology development potential is huge.

④ Photovoltaic power generation itself does not use fuel, does not emit any substances including greenhouse gases and other waste gases, does not pollute the air, does not produce noise, is environmentally friendly, and does not suffer from the impact of energy crisis or unstable fuel market. It is a truly green and environmentally friendly new renewable energy source.

⑤ photovoltaic power generation process does not need cooling water, and it can be installed on the desert Gobi without water. Photovoltaic power generation can also be easily combined with buildings to form a photovoltaic building integrated power generation system, which does not need to occupy land separately and can save valuable land resources.

⑥ Photovoltaic power generation has no mechanical transmission parts, simple operation and maintenance, and stable and reliable operation. A set of photovoltaic power generation system can generate electricity as long as there are solar cell modules, and with the wide adoption of automatic control technology, it can basically realize unattended operation and low maintenance cost.