Discount Solar Panels

We offer a full range of B-grade solar panels with various power capacities, suitable for regions where the target market price is extremely sensitive. Due to the lower power of B-grade panels compared to the conventional rated power, the components usually do not have complete IEC/TÜV/UL certifications, and customers in the European and American markets cannot clear customs. Since the power of B-level products is lower than the rated value, their lifespan is approximately 5 to 10 years. Our company will not be able to offer warranty and after-sales services. Customers who are not comfortable with this should not purchase.

What is the B level solar panels?

The B Level solar panels is that one or more parameters are slightly below the specifications (typical efficiency is 1-3% lower), or there are minor appearance defects (edge chipping, slight color difference, small broken grids, scratches) – it can generate electricity, but its performance degrades faster, and usually has no formal warranty, and is sold to third-party assembly factories or enters the secondary market.

Solar Panel Cell Grades: A vs B vs C

In the photovoltaic industry, Solar panel cells are classified into three major categories based on their quality grades: A grade, B grade, and C grade. This classification significantly influences the performance, lifespan, and applicable scenarios of the components.

Dimension	A-Grade	B-Grade	C-Grade
Conversion Efficiency	Meets full specifications	Slightly below specification, unstable	Far below specification
First-Year Degradation	≤1%	~2%–6%	Severe
Annual Degradation	0.3%–0.4%	1%–3%	Faster
Typical Lifespan	25+ years	5–10 years	1–3 years, prone to failure
Warranty	25-year full manufacturer warranty	None or short-term	None
Suitable Applications	Residential, commercial & standard power plants	Low-cost, simple projects only	Do not use (safety hazard)

Frequently Asked Questions

B-grade solar panels are favored by the market due to their low prices. However, since their power is not the rated value and the warranty cannot be guaranteed, customers are advised to make their choices carefully.

Does your company offer warranty for Class B solar panels?

Since the B-grade solar panels are downgraded products, their power output is not the nominal power, so our company does not offer any warranty.

Which countries are suitable for Class B solar panels?

Since the B-level component products usually do not have complete IEC/TÜV/UL certifications, they may not be able to clear customs in the European and American markets.

Which markets are suitable for B-grade solar panels?

At present, the B Grade solar panels is suitable for the low-cost and simple battery panel projects, especially in regions where prices are extremely sensitive.