The advantages and disadvantages of photovoltaic energy production on household roofs are as follows:
The advantages of photovoltaic energy production on roofs in rural areas:
1. Photovoltaic energy production is very suitable. If there are self-built houses in rural areas with unused roofs, they can use the roofs for investment purposes.
2. A one-time investment in photovoltaic power generation will generate lifetime income. Once the installation is complete, you will receive a fixed amount every day.
3. Solar power generation is safe and reliable, and solar power is inexhaustible and clean energy.
4. Solar energy is an ideal clean energy source. The production of photovoltaic solar energy produces no waste, does not produce a greenhouse effect and produces no noise or harmful gases.
5. The production ofPhotovoltaic energy can significantly reduce operating costs. Photovoltaic solar power generation does not require fuel, it only needs the sun to produce electricity.
Disadvantages of rural rooftop photovoltaic power generation:
1. The lifespan of photovoltaic power plants is not eternal. The lifespan of general photovoltaic panels will decrease after 35 years and the power. production efficiency Efficiency will be reduced.
2. Photovoltaic solar energy production relies on the Volt effect generated by the semiconductors inside the solar panel. The roof frame was not reinforced early in the design. Since the photovoltaic power generation equipment itself is very heavy, it can damage the roof structure, especially if it is an old house, it is very likely to damage the roof .
Fieldsapplication of photovoltaic energy production:
1. Solar User Power Supply: (1) Small power supply ranging from 10 to 100 W, used in remote areas. without electricity, such as electricity for military and civilian life on the plateaus, islands, pastoral areas, border posts, etc., such as lighting, televisions, tape recorders, etc. (2) household rooftop grid-connected power generation of 3 to 5 kW; system ; (3) Photovoltaic water pump: solve the problem of drinking water from deep wells in areas without electricity and irrigation.
2. Transportation fields such as navigation beacon lights, road/railway signal lights, warning/signal lights, Yuxiang street lights, high altitude obstacle lights, wireless phone booth power supply wire for highways/railways, etc.
3. Foodelectrical tation for home lighting: such as garden lights, street lights, portable lights, camping lights, mountaineering lights, fishing lights, black light lights, rubber tapping lights , energy-saving lamps, etc.
Advantages and disadvantages of home solar photovoltaic power generation system
Whether home solar power generation is profitable depends on the circumstances specific.
The investment cost of home solar power generation is relatively high, and the installation of a home photovoltaic power generation system with a power of 5 kilowatts will cost a certain amount . Even if the government provides subsidies, the real cost remains higher. Additionally, since solar power generation systems depend on solar radiation, their outputNo electricity will be affected by weather conditions and other factors, resulting in unstable power generation efficiency.
Revenue from domestic solar power generation mainly comes from self-use and power grid surplus. In some areas, power companies purchase electricity produced by home photovoltaic power generation systems at a higher price, but the price is generally low and it is difficult to purchase electricity in a short time. time.Recover costs inside. In some regions, the government will offer preferential policies, such as free installation, tax exemptions, etc. These policies can reduce the cost of home solar power generation and increase its benefits.
Therefore, the question of whether it is cost-effective to install a home solar energy system must bee assessed on a case-by-case basis. If your electricity needs are modest and you have access to government incentives, it may be cost-effective to install a solar home energy system. But if your electricity needs are high or you don't have access to government incentives, considering whether to install a home solar energy system may take more time.
The cost of installing a domestic photovoltaic plant is lower than that of a large ground-mounted power plant;
Use the electricity produced by the photovoltaic power plant can save on electricity bills;
You can earn money by selling the unused electricity to the national grid, and there is a subsidy of 0.42 yuan for each kilowatt hour.
Disadvantages: If the photovoltaic power plant is not installed reliably, it will fall and hit people in strong winds;
The electricity production of photovoltaic plants in winter is 20% of that in summer, rooftop photovoltaic plants will operate intermittently.
Photovoltaic energy production generally has no radiation. The principle of photovoltaic power generation is to first convert light energy directly into direct current through the characteristics of semiconductors, and then convert the direct current into alternating current which can be used. by people via an inverter. There are no chemical changes or nuclear reactions, so there is no radiation in photovoltaic energy production.