Is it cost-effective to install photovoltaic power generation on rural roofs?

Solar power is a new energy source that is promoted by the state because it not only saves non-renewable energy, but also reduces pollution of nature. It is a good thing that the country has to do, and the country certainly advocates it, and it has many other advantages. It is installed on the roof. It can be insulated and beautiful, so the benefits are still a lot. 

Solar photovoltaic power generation process is simple, no mechanical rotating parts, no fuel consumption, no emissions of substances including greenhouse gases, no noise, no pollution; solar energy resources are widely distributed and inexhaustible. Therefore, compared with new power generation technologies such as wind power, biomass power generation and nuclear power, photovoltaic power generation is one of the most sustainable development features (the most abundant resources and the cleanest power generation process). 

Has the following main advantages.Solar photovoltaic power generation process is simple, no mechanical rotating parts, no fuel consumption, no emissions of substances including greenhouse gases, no noise, no pollution; solar energy resources are widely distributed and inexhaustible. Therefore, compared with new power generation technologies such as wind power, biomass power generation and nuclear power, photovoltaic power generation is one of the most sustainable development features (the most abundant resources and the cleanest power generation process). Has the following main advantages.

1 Solar energy resources are inexhaustible, and the solar energy that shines on the earth is 6000 times larger than the energy currently consumed by humans. Moreover, solar energy is widely distributed on the earth, and photovoltaic power generation systems can be used as long as there is light, regardless of geographical and altitude factors. 

2 Solar resources are available everywhere, can be powered nearby, no long distance transmission, avoiding the loss of power caused by long-distance transmission lines. 

3 Photovoltaic power conversion process is simple, is the direct conversion from light energy to electrical energy, there is no intermediate process (such as thermal energy converted to mechanical energy, mechanical energy converted to electromagnetic energy, etc.) and mechanical motion, there is no mechanical wear. According to thermodynamic analysis, photovoltaic power generation has a high theoretical power generation efficiency, reaching more than 80%, and the potential for technology development is huge. 

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

5 The photovoltaic power generation process does not require cooling water and 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 require a separate land occupation and can save valuable land resources. 

6 Photovoltaic power generation has no mechanical transmission components, simple operation and maintenance, stable and reliable operation. A photovoltaic power generation system can generate electricity as long as there is a solar cell module, and the extensive adoption of automatic control technology can basically achieve unattended operation and low maintenance cost. 7 Photovoltaic power generation system has stable and reliable working performance and long service life (more than 30 years). Crystalline silicon solar cells can last up to 20 to 35 years. In the photovoltaic power generation system, as long as the design is reasonable and the selection is appropriate, the life of the battery can be as long as 10 to 15 years. 

8 Solar battery packs are simple in structure, small in size and light in weight, easy to transport and install. The photovoltaic power generation system has a short construction period, and it can be large or small according to the power load capacity, convenient and flexible, and easy to combine and expand. Solar cells are a promising new power source with three advantages: permanent, clean and flexible. Compared with thermal power generation and nuclear power generation, solar photovoltaic power generation does not cause environmental pollution; solar cells can be large and medium-sized, ranging from a medium-sized power plant with a capacity of one million kilowatts to an independent solar power system with only one household. These features are unmatched by other power supplies.