Understanding the grading system
For solar panel manufacturers, they often hear terms like “Tier 1,” “Tier 2,” and “Tier 3.”. Tier ranking is a classification system developed by professional organizations.
The ranking of solar panels has a significant impact on manufacturers: manufacturers who obtain a Tier 1 rating are usually well-known large manufacturers in the industry, with relatively reliable quality assurance and good reputation.
Usually, tier 1 installers invest heavily in research and development, constantly innovating to improve their products and processes while saving manufacturing costs. To advance to the first level, manufacturers must produce their own branded panels and supply them for at least five different projects.
The characteristics of high-quality solar panels
Conversion efficiency
The conversion efficiency of solar panels refers to the efficiency of converting sunlight into usable electrical energy. High quality solar panels convert more of the captured sunlight into electricity.
Temperature coefficient
The temperature coefficient indicates the performance of solar panels under non ideal working conditions. Solar panels, like any other type of electronic device, have the highest efficiency when they are kept in a cooled state (ideal temperature around 25 ° C or 77 ° F).
In the hot summer, the performance of the panel decreases with increasing temperature. For solar panels, the lower the temperature coefficient, the better. The temperature coefficient of large brand solar panels can usually be controlled within a lower range.
Material quality
Regardless of the purchase of any product, customers expect the manufacturer to provide strong warranty services for the after-sales service of the product. The material of primary solar panels is usually the best on the market, protecting you from equipment failures caused by manufacturing defects or environmental issues. The solar panels that have received a Tire1 rating are all from large companies, most of which offer at least 10 years of material warranty.
