n.ragavander Posted March 13 Share Posted March 13 The first one is for azimuth 12° and we are wondering as to how there is a difference of 10 percent in specific production between south and 12°, is there any way to explain this as the loss diagram is pretty much the same only a 2% difference. In all the research articles as well we have an understanding that from 0-40° azimuth change thre is only a 2-5 percent difference in specifc production, so could you explain why this is the case in PVsyst, and also which value should i look into so i can actually justify the 10 percent reduction in specific production? Thank you The below picture is for azimuth 0 Link to comment Share on other sites More sharing options...
Michele Oliosi Posted March 14 Share Posted March 14 You can see that the main difference between the two variants is the “STC-Wirkungsgrad” (STC efficiency). This means that the modules used in the two simulations must be different in some way, probably. Can you check that the modules are really the same? Link to comment Share on other sites More sharing options...
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