[Sicence Popularizing] What are the guarantees for photovoltaic modules and inverters?

Update time : 2020-07-27

The quality assurance of the solar system involves modules, inverters, installations, and various other Modules. Owners always hope to be effectively guaranteed throughout the life cycle of the solar system. They know that it is important to choose the correct modules and inverters. , And also know that the correct installation of these modules is also very important. But regarding quality assurance, there is always a gap between reality and desire.


If the solar system stops working for some reason, or encounters other problems, the owners hope that the supplier can cover it. This involves the warranty of these items. In fact, as a photovoltaic system supplier, four separate warranties must be considered.

1. Module performance guarantee

The performance guarantee of solar panels is usually required to be 25 years, although some manufacturers increase the warranty period to 30 years. When installation companies talk about a 25-year warranty for solar panels, they usually only consider their performance and do not cover other aspects of the system or the panels themselves, and more Module suppliers promise 20 years.

2. Module product warranty

Generally, unlike performance guarantees, most Module products have a warranty period of 5 to 10 years, depending on the company installing the modules and the products they provide. This is far from the Module performance guarantee and is shorter, but many people mistakenly believe that the Module product warranty is the same as the Module performance warranty. This may make them think that their guaranteed coverage is more than it actually is, and the coverage period is longer.


3. Inverter warranty

The inverter warranty period is almost always five years, but sometimes there are upgrade options to extend the warranty period to 10 years or more. These upgrades are usually not free and may be provided at the time of sale or installation. If the cost of other guarantees is lower, they can provide higher value, but it is important to understand how much the cost will rise.

4. Installation guarantee

The warranty for the installation is provided by the installer, not by the manufacturer of the solar panels or other system modules. Usually, this warranty period is one or two years. In some cases, the installation warranty period may be 10 years, but this is not common. Asking the installer about the warranty period is essential for understanding the system.


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-What warranty terms should you ask the installer?

Specifically, before choosing an installation company for your solar panels and inverters, be sure to ask the company about the warranty status. The installer may say there is a 25-year warranty, but it is important to understand whether it can cover everything. Although it may cover Module performance, the warranty period for other aspects may be much shorter. It is very important to accurately understand the products and services you get.

-Who should you talk to about product issues or safety risks?

If you encounter a product problem, or find that you think there is a safety hazard, usually the first step is to contact the installer. They know the work done for you very well and they also have all the information about the manufacturer of the installed product. Regardless of whether your modules or inverters are still under warranty, it is very important to resolve safety risks and other issues in a timely manner.

-Active learning of photovoltaic operation and maintenance

Choosing the right installer, Module manufacturer and inverter supplier is almost the core quality link of a solar system, but it does not represent everything that will be run afterwards. During the operation process, there are often performance degradation caused by non-product factors, and the power generation is not as expected. The owner needs to actively learn some common sense of photovoltaic operation and maintenance.

In addition, the update of photovoltaic technology is changing with each passing day. Some product design problems may be unforeseeable by product suppliers and installers at the beginning of installation, but there are often some new technologies that can make up for it later.

For example, for the owners of industrial and commercial rooftop photovoltaic power stations, it is often encountered that the power generation is not as expected, and it is often caused by the most common dust accumulation and mud belt occlusion of the frame, which will not be within the quality assurance range of the system.

Service providers often recommend that owners use frequent cleaning to solve this problem by themselves, but if the owners often care about the industry, they know some of the latest small ideas, such as automatic drainage and mud removers, which can solve the problem of dust accumulation and mud belt obstruction at a very low cost. Big problem. However, since such small ideas are often not the mainstream technology that the photovoltaic industry is most concerned about, the owners need to learn and understand by themselves.