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Photovoltaic power generation enters the homes of ordinary people, the people become electric bosses, investment power stations have income, power generation countries have subsidies, lying in the sun at home to make money for you! After several years of development, photovoltaic power plants finally become fire, and slowly become people The key selection of investment projects. However, the quality of photovoltaics on the market is now uneven, and the prices are very different. In the face of such a market, I really don't know what brand of manufacturers and agents to choose. Here's how to do it, choose a cost-effective installation direction.
Solar photovoltaic modules are mainly divided into A, B, and C grade boards. The A-class board is the best, the B-class board is a little bit later, and the C-class board is the recycling board. In general, it is the refurbished old board. Class A boards can also be subdivided into three levels: A+, A, and A-, the same as Class B. Different levels of solar panels, the cost gap is very large, directly causing the difference in the sales price of photovoltaic power plants. Photovoltaic panels are the core of household power plants, and the quality of their products directly affects important parameters such as service life, power generation, and attenuation rate.
Are there any wood components?
Of course, not all photovoltaic panels will be graded, and sub-filled photovoltaic panels will appear. For example, it is generally a real photovoltaic panel, half of which is waste paper, and finally wrapped with tempered glass; such a piece of photovoltaic The board, its power generation will only be half of the normal PV panel power generation, but the appearance is not bad.
 
Where do these components come from?
According to the usual situation, the main source is two big aspects. First, some manufacturers jointly produce or OEM the OEM. In order to alleviate the financial strain, some manufacturers have joined hands with some small factories to label the components produced by the unqualified small factories on the logo of the big factory for mutual benefit. In addition, some small component manufacturers have opened up the market and illegally produced brand-name products, resulting in the product quality not meeting the A-level standard of regular manufacturers. There are also some agents for the benefit of the small factory to produce cheap components and put them on the brand for sale. The owner did not understand the bottom of these products, and installed such a board under the agent's flicker. This type of board usually does not have problems within 1-5 years of installation, but as time goes on, the attenuation will not be acceptable for more than 5 years. When the standard is reached, the power generation will plummet and cause losses to the owners. Second, the unqualified component products acquired in the market are reprocessed and sold. Some of them acquire some damage, disassembly, downgrade, and inefficient components in the society for the benefit, and then sell them after branding or changing cards to seek ill-gotten gains.
I really don't know how to buy these components at a high price. You know, the routine is too deep!
What components are you choosing?
As the owner of the photovoltaic panel, of course, we must choose the regular manufacturer products, they have product certification and product testing certificate, quality is guaranteed, to avoid the situation of "not to say no door", after all, the installation of photovoltaic power station is to use more than 20 years, one point price Everyone understands the truth of a piece of goods!
A look at the manufacturer of the components. See if it is publicized by the Ministry of Industry and Information Technology, "Compliant with the list of enterprises in the photovoltaic manufacturing industry (the sixth batch)" (this is very important), and qualified for a total of 235 companies. There is a saying that "the big tree is good for the cold", this should be a good enterprise of the photovoltaic manufacturing industry that the Ministry of Industry and Information Technology has examined and approved and announced to the people of the country. The quality assurance and after-sales service of the big brand components are guaranteed. Is it right to choose such a brand? (This number has been specially published for a list, and will be returned once again for inquiry)
The second is to look at the production enterprise base. In other words, in recent years, companies have put their main strengths on expansion or on R&D and quality. Think about it, if the same company has many production bases and production enterprises, and there are many joint ventures, is it difficult to manage? If the production base is small, it is not easy to manage and control.
The third is to look at the brand reputation. From the examination of photovoltaic modules: the power generation of large-brand A-level components is basically at one level in one region, and the difference in power generation is not too big. The difference between brands is mainly the difference in technology and quality, the process difference and the manufacturer's The difference is very small. Therefore, when choosing a brand, we must look at the after-sales service, see if there is an agent service provider, whether there is protection after the sale, and choose a good after-sales brand that is absolutely not wrong!
Four look at the price. From the point of view of propaganda, some agents pursue high prices, but also revive the high price of words to have high quality, but this kind of thing is still ok, as the owner not only depends on the quality, but also on the price, but also Looking at the service, we must consider the high cost performance, consider the power cost of the power station, and consider the annual rate of return on investment.
Five look at things useful. If you want to install a photovoltaic power station on your own roof, it is of an investment nature. It is recommended to choose a brand A-grade component with big brand, good quality and good service. The installation market price should be reasonable at around 6 yuan; if you are a temporary one or two months Use electricity, install it in the warehouse area, factory building, workshop, garage, etc., or use it on street lamps. It mainly solves the problem of temporary power consumption. Then you can choose the B-class board that can be used on the line. The cheaper the better!
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