Based on the results of PVEL’s module reliability test as part of its Product Qualification Program (PQP), JinkoSolar’s TOPCon bifacial modules (JKM555N-72HL4-BDV) have been deemed excellent and outstanding in every category. Particularly in tests for “LID+LETID” under DH2000/BO, the modules were awarded the title of “Top Performer” in module reliability tests.
According to the results of PVEL’s DH2000 test on hundreds of modules from various brands, average degradation was 1.2% – 1.7% across different technologies (PERC, TOPCon, HJT, CdTe), but JinkoSolar’s topcon bifacial modules (JKM555N -72HL4-BDV) had the lowest degradation of 0.55%.
PVEL’s Damp Heat (DH) test simulates long-term degradation and failure modes that are typical in high temperatures and high humidity conditions where moisture and heat can weaken the materials binding the PV module together. As a result of low-quality components and/or substandard lamination processes, these materials can lose their adhesiveness and corrode internal materials. There are potential performance losses and safety concerns as a result.
An environmental chamber containing 85°C and 85% relative humidity for two periods of 2000 hours is used for the DH2000 reliability test. This test is -two times the duration required for IEC certification in order to identify additional module failure modes where the combination of high heat and intense moisture stresses the PV module layers.
Environments with high temperatures can lead to a destabilization of PV cell boron-oxygen (BO) complexes. This leads to power loss in boron-doped PERC cells, but is less of a concern for non-boron-doped cells, such as N-type TOPCon.
N-Type solar panels from Jinko Solar are available for purchase.
About PVEL
PVEL stands for “PV Evolution Labs,” which is an independent testing and certification laboratory focused on evaluating the performance and reliability of solar photovoltaic (PV) modules and other solar energy products.
The PV Module Reliability Scorecard is based on tests performed by PVEL, the world’s leading independent laboratory, on solar modules from leading solar manufacturers. PVEL has rigorously reviewed the modules produced in the factory in the past 18 months, and conducted the test to determine the performance of the modules. PQP covers multiple test contents such as thermal cycle, damp heat, dynamic mechanical load, PID and PAN file.