Hi, usually when importing a meteofile containing diffuse insolation, PV Syst will use it for the sim and note it on the report as "imported". When importing a meteonorm *.dat file, the report says under diffuse "Erbs, Meteonorm". Does this mean PV Syst is then not using the diffuse part for the simulation but is calculating the diffuse with Erbs? The other possible explanation would be that Pv Syst knows that Meteonorm uses Erbs to calculate the diffuse part, where I couldn't find any hint for in Meteonorm documentation. This does have a huge impact on shading losses here in Europe.
