1. Types of solar panels
There are monocrystalline solar panels, polycrystalline solar panels and thin-film solar panels as far as panel materials are concerned, and there are also single-sided solar panels and double-sided solar panels. These types of solar panels need to be purchased according to your needs.
For example, if you have limited space in your home and your home has a high demand for electricity, in this case you would definitely choose mono-crystalline solar panels because these solar panels have the highest energy conversion efficiency (energy conversion efficiency is around 30%).
If you buy solar panels to provide power for your car, but the size of the power provided does not require too much, then thin film solar panels can not only make good use of space, but also on the appearance of the car will not have too great an impact on the car, is the most suitable for you to choose.
2. Output power of solar panels
The output power of solar panels is the key parameter that determines how much electricity the solar panels can provide for your home every month, simply put, it means that solar panels with high output power can absorb and convert more solar energy for your use under the same conditions.
For example, 400watt mono-crystalline solar panels produce more electricity than 200watt mono-crystalline solar panels under the same hours of sunshine. In this way, you can choose the right solar panel with the right output power according to the monthly electricity consumption of your home.
Output power is also related to your purchase of solar panels when the cost can be recovered, such as your solar panels cost 2,000 $, assuming that your solar panels can produce 1,000kWh per month, your family only need to use 600kWh of electricity per month, then the remaining 400kWh can be sold to the power company, if 0.08 $/kWh, then about 6 years can be The cost of solar panels can be recovered in about 6 years if 0.08$/kWh.
3. Solar panel size
Before buying solar panels you need to measure the place where you are going to place the solar panels, then the right size can make better use of the limited space, thus the size of the solar panels is something you need to consider carefully before buying solar panels.
For example, if your space is 1.8m x 1.2m in length and width, then choosing 400watt solar panels (with a general size of 1.6m x 1m) would be the most suitable, so as to maximize the use of space, assuming that you have purchased 600watt solar panels (with a general size of 2.1m x 1m), which would result in the inability of the solar panels to be installed properly.
4. Warranty service of solar panel
The warranty service of the solar panel is very important, you need to check the warranty service of the solar panel carefully before you buy the solar panel, including the warranty conditions and warranty time.
Take monocrystalline solar panels as an example, monocrystalline solar panels product warranty for 12 years, power warranty for 25 years, during this period is due to manufacturing defects in the product itself or material problems caused by solar panels can not work properly, or the power drop to the warranty value under the warranty can be proposed warranty services. If you buy a solar panel warranty time is far less than 8 years, it is possible to buy B grade or second-hand products.
5. Price of solar panels
The price of solar panels is the most important thing you need to consider before buying solar panels, because it is about whether you have enough budget in hand, the price of solar panels can be obtained by consulting the solar product sales website.
Suppose you buy solar panels in the budget of about 200 $, and you want to build a 2kW solar energy system, according to the current market price of solar panels, monocrystalline solar panels price is about 0.1 $ / watt, polycrystalline solar panels price is about 0.85 $ / watt, the price of thin film solar panels about 0.3 $ / watt, you can only start from the polycrystalline solar panels price is about 0.1 $ / watt, you can only purchase solar panels from the polycrystalline solar panels price is about 0.3 $ / watt. Thus, you can only choose from polycrystalline solar panels and monocrystalline solar panels.
6. The service life of solar panels
Purchasing solar panels is naturally to consider the service life of the solar panels, in general, the longer the service life of the solar panels later for you to bring more revenue, but also to save your time and energy spent on solar panels, you know that the purchase of a new set of solar panels need to spend a considerable amount of money.
Under normal circumstances, monocrystalline solar panels have the highest life expectancy (about 25 to 30 years), polycrystalline solar panels have a slightly lower life expectancy than monocrystalline solar panels (about 20 years), and the lowest life expectancy of flexible solar panels (about 5 to 8 years).
7. Brand of solar panels
If you are overwhelmed by the number of solar panels from different vendors, you may try to start from the big brand solar panels manufacturers, such as Longi solar panels, Jinko solar panels and JA solar panels, etc. They have more mature industrial chain and advanced technology to cope with the situation you are facing now.
For example, JA solar panels has been developing rigid solar panels for many years, and its PERC monocrystalline solar panels and RIE polycrystalline solar panels lead the industry in terms of energy conversion efficiency. Therefore, choosing branded solar panels can ensure the quality of the product to a certain extent.
8. Installation cost and transportation cost of solar panels
Before purchasing solar panels, you must determine the installation cost and transportation cost of solar panels and dealers related issues, such as transportation costs and installation costs paid by whom and other issues, after clarifying these issues, you need to sign a legally binding contract with the dealer, so that the dealer will naturally install the contract to fulfill the responsibility to avoid problems arising from the later installation and transportation, which will help protect your rights and interests. Favorable protection of your rights and interests.
9. Payment methods for solar panels
You need to understand the solar panels before you buy solar panels payment methods, for example, you are currently difficult to take out enough cash from the bank, you need to install the solar panels before you take out the payment, then you need to determine this payment method is okay with the dealer, we must know that some dealers need to pay enough money before they can give you the product, to determine the payment method, you also need to be written into the contract. After determining the payment method, you also need to write the relevant content into the contract.
Summarize
Solar panels have gradually become a necessary equipment for all families, and become a big help to people’s life, through the in-depth understanding of the solar panels purchase considerations, is conducive to selecting the product you are satisfied with, take action now, let the solar panels embellish your life.
