Adam Bell

Correct, these are half cells

I am sorry for the late reply. I realized after the fact what a silly question it is to double the strings. And yes, I included the electrical effect by defining two strings, the cell width as approximately 8cm. Yes the roof should be white, its that typical membrane covering on commercial roofs.

Thank you, that would make sense. Also, it is San Jose California. I attached the GHI graph screenshot I was also wondering if, in the system tab, I should double the number of strings because I am using "Twin Half-cut cells" modules ? And if I should activate "Electrical Effect" in orientation tab? Selecting that lowers the production slightly ~2% I selected the default 0.30 albedo, and the height is 2 ft (0.61 m ) from the ground. Thank you!

Hello, I made a very very simple system, using the ZNshine 450W bifacial PV module. I wanted to see how much extra production the bifacial side adds. So I ran the model with and without the bifacial model. The difference is less than 3% production? I followed the PVSyst guide to model bifacial systems. Can anyone explain why the bifacial model only adds ~3% production?