How are solar panels tested?

How are solar panels tested?

This article from CHOICE explains how they test the quality of a solar panel when they publish a review, and it might be a quite similar process when the solar PV production company does it. https://www.choice.com.au/home-improvement/energy-saving/solar/articles/how-we-test-solar-panels 


To be more detailed, there is a standard (IEC/TS 62804-1:2015) that defines the test methods and procedures to evaluate the durability of PV modules.