Erin T.

Hi, thanks for your quick reply. So, for example, if I was simulating 1 row of modules in v7.4.8, then this old version was likely under-estimating the rear diffuse irradiance component, but if I was simulating 4 or more rows then this old version would be over-estimating rear diffuse irradiance? This is because v7.4.8 always assumed 3 sheds?

Hi there, I ran simulations in v7.4.8 before the new year, comparing modelled irradiance in PVSyst for a fixed-tilt vertical bifacial PV system to measurements of reference cells in a vertical bifacial test-site. I was wondering if there are any key differences between v7.4.8 and the latest update with v8 which might impact the results of this comparison? Thank you! Erin