Hi
I have noticed modules have vastly different IAM (incidence angle modifier) values. Ranging from 95 to 99 to 99,9 to 100.
This has a fairly significant impact on the yield. How reliable are the IAM values provided by the manufactures and what level of auditing is done? These values are obviously not shown on the module datasheet and it seems suspicious that there is such a big range in values provided.
I see for example that PVSyst requires a third party report from manufacturers if they claim non-standard IAM values for their modules.
Does PVSol team also apply this kind of due diligence or are manufacturers free to provide whatever database entries they chose?
Any insight in this regard would be greatly appreciated!
