Formula used for calculating Isc BNPI current rating
The current rating for bifacial panels is calculated as follows:
Isc BNPI = Isc STC *(1+0.135*BF), where BF is the bifaciality factor
Applying elevation from roof/surface
Go to the balance of system view in the array designer
Select mounting type as tilt frame
Apply the appropriate tilt angle
Apply “Elevation from surface” in meters as required
Selecting surface reflectance (albedo factor)
Go to the Solar & Battery designer section
Scroll down to the Derating section
Select the Surface Reflectance value (the albedo factor is mentioned in brackets)
Checking the bifacial gain on the Derating table of the Reports page
The bifacial gain is displayed in the Derating table of the Reports page as below:
