Advantages of solar photovoltaic power generation
Solar photovoltaic power generation has many advantages. It directly converts solar energy into electrical energy, does not consume fuel, does not pollute the environment, does not produce noise, does not produce radiation that harms human safety, and is a green and clean energy source. Solar energy resources are widely distributed and are inexhaustible and inexhaustible resources. Compared with traditional thermal power generation and new wind power generation and nuclear power generation, solar power generation is the most ideal sustainable renewable energy power generation technology.
1. The solar resources are widely distributed: inexhaustible and inexhaustible
Solar energy is the energy produced by the continuous nuclear fusion reaction process inside the sun. Although the energy radiated by the sun to the outside of the earth’s atmosphere is only one 2.2 billionth of its total radiant energy (about 3.75×10^14tw), its radiation is The amount has been as high as 1.73×10^5tw, that is, the energy projected by the sun onto the earth per second is equivalent to 5.9×10^6 tons of coal. The solar energy irradiated on the earth is 6000 times larger than the energy currently consumed by human beings. Moreover, solar energy is widely distributed on the earth. As long as there is light, solar power generation systems can be used, regardless of geographical, altitude and other factors.
2. Rooftop photovoltaic power stations avoid losses caused by long-distance power transmission
Solar energy resources are available everywhere and can be supplied nearby without long-distance transmission, which avoids the loss of electric energy caused by long-distance transmission lines.
3. Simple conversion process of rooftop photovoltaic power generation
Rooftop photovoltaic power generation is a direct conversion from light energy to electrical energy. There is no intermediate process (such as the conversion of thermal energy into mechanical energy, mechanical energy into electromagnetic energy, etc.) and mechanical movement, and there is no mechanical wear. According to thermodynamic analysis, solar power generation has a high theoretical power generation efficiency, which can reach more than 80%, and there is a huge potential for technological development.
4. Rooftop photovoltaic power generation is clean and environmentally friendly
The rooftop 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, does not produce vibration pollution, and does not produce radiation harmful to human health. It will not suffer the impact caused by the energy crisis or the unstable fuel market. It is a new type of renewable energy that is truly green and environmentally friendly.
5. The roof photovoltaic power generation system is stable and reliable
The life span of crystalline silicon solar cells can be as long as 20 to 35 years. In the solar power generation system, as long as the design is reasonable and the model selection is appropriate, the service life is long (more than 30 years).
6. The rooftop photovoltaic power station does not require special personnel on duty
The rooftop photovoltaic power station has no mechanical transmission components, simple operation and maintenance, and stable and reliable operation. A set of solar power generation system can generate electricity as long as it has solar cell components, and the extensive use of automatic control technology realizes unattended operation and low maintenance cost.
7. The rooftop photovoltaic power station is easy to transport and install
The solar cell module is simple in structure, small in size, light in weight, and easy to transport and install. The solar power generation system has a short construction period, and can be large or small according to the power load capacity, which is convenient and flexible, and is extremely easy to combine and expand.
8. National policy support
In terms of subsidies, household photovoltaic power plants can receive 0.42 yuan of state subsidies for every kilowatt-hour of electricity generated for 20 years. In addition, various localities also have corresponding subsidy policies. For example, Foshan has a subsidy of 0.15 yuan/degree for 3 years; Dongguan has a subsidy of 0.3 yuan/degree for 5 years. Because rooftop photovoltaic power stations do not occupy existing land and make full use of idle resources of buildings, they have received strong support from national policies.
9. Investment and financial management income
Installing photovoltaic power stations on the roof not only has the effect of heat insulation and cooling, but also can create green income, preserve the value of one's own roof, and play a green environmental protection role. With the strong support of the country and the leap of the photovoltaic industry With development, photovoltaic power plants will also become standard equipment and become a wealth management product that is well-known to the public.
As a typical example of low risk and high return, the annual income of solar photovoltaic power plants is about 15% due to national policy support and local government subsidies. This is indeed a very suitable investment method for residents with roofs!
