ClaireWest

When i provide GHI as input but not DHI (so PVsyst has to calculate DHI), why does the PVsyst output report say "Diffuse: Perez, Meteonorm" under "Models used" when the PVsyst advice on this is that the Erbs model is used and Perez is not currently implemented? https://www.pvsyst.com/help/physical-models-used/irradiation-models/diffuse-irradiance-model.html TIA

How do we define north at the top? This is very irritating as in the simulation report the shading scene shows upside down. I have tried "save this view for the report" with north upwards but it is still flipped when i produce the simulation report (or click "load report view")

Thanks. What simulation parameters influence these losses? e.g. diffuse irradiance (total amount or fraction), GCR, albedo, etc?

Why is there a near shading loss for a single-axis tracking system with backtracking, when there is no 3D shading scene? The backtracking should prevent any self-shading and there are no objects or terrain modelled to cause other near shadings. TIA