IAM Losses

[Abeer]

What does IAM Losses mean, and what factors does it depend on? and what's the meaning of ASHRAE Model 

[dtarin]

https://www.pvsyst.com/help/index.html?iam_loss.htm

[sagar b]

On 11/1/2024 at 1:16 AM, Abeer said:

What does IAM Losses mean, and what factors does it depend on? and what's the meaning of ASHRAE Model 

Hi Abeer,

Above link will help you to know about the IAM loss.

Just make sure you are using the correct pan file when doing the simulation. If manufacturer send you the pan file, you need to customize IAM, use PVsyst default depending on your module is AR coating or not. Same for the Relative efficiency at low light. Use default Rse to get the Rel. efficiency of -3% at 200W/m2.

There is no problem if you use the pan file of the PVsyst database.