pv magazine Test results

pv magazine Test is designed to help investors in their module purchasing process, while at the same time allowing manufacturers to spot problems and improve their production practices. The measurements are carried out in GSolar’s test laboratory in Xi’an, China. To ensure the quality of Gsolar’s tests, pv magazine chose CEA as a partner. It acts as an independent third-party expert and monitors all steps of the testing program to ensure measurement protocols are respected.

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Modules are given a grade from 0 to 100 points for each test. In calculating the average grade of the module, each individual test grade is given a certain weighting as shown in the table. The tests “Visual inspection” and “EL image inspection” each get a 10% weighting, while the tests “Low irradiance efficiency loss” and “Pmax temperature coefficient” each receive a 25% weighting. Given the importance of PID resistance, the test for “PID loss” receives the highest weighting, namely 30%. Sample method categorization: 1. sample randomly selected by CEA from a large production lot. 2. Sample purchased from the market by CEA 3. Sample provided by the supplier, without random selection.

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More details on how pv magazine Test works can be found here: pv magazine Test