Grade B panels often have scratches or color differences, the power is usually 3-5% lower, and there is no official warranty. It is recommended to prioritize Grade A, as its power generation is more stable and its lifespan is longer, making it the best choice to ensure. Solar panels are graded into categories A, B, C, and D based on their quality, and the cost differences between these grades can be significant. Both types can operate normally, but Class A panels follow stricter quality standards, especially for export markets and high-end installations. choose the right panels and design your system effectively.
