Xavien Posted March 9, 2015 Share Posted March 9, 2015 Dear all,I'm using PVsyst to calculate the expected output of a power plant.I do 3 calculations based on 3 different meteorological datasets- Meteonorm- NASA- PVGISI extract hourly calculations from CSV file and relate them to real field values. I believe I am doing something wrong. I use V5.73 due to license. Here's the issue. So this is the PVsyst report. I grab the CSV values from it and use it in an excel fileHere you can download the file that contains our measurements and PVsyst CSV files (merged) from 3 different Meteo sources.This is the excel style that I use for manual tracking of the values.Here in this month; you can see that our irradiation is 110,5% above the average of MN-PVGIS-NASA. However the real production is 78,4% of the average of the PVsyst simulations. The system is overloaded but it had never been a difference of %20. What might be the issue of this since this is not minot but major. BR, Link to comment Share on other sites More sharing options...
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