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Sun Paths


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There is not default horizon methodology; however PVGIS is free and included in PVsyst. It is up to the user to decide which source to use. The yellow sun-path area is determined by PVsyst according to project location.

The horizon data generated from PVGIS is based on the coordinates located in the .SIT file. The data comes from PVGIS, and should not be dependent on the PVsyst version, so long as it is working in the version you are using (some older versions of PVsyst no longer work with PVGIS). Similarly, if you are using meteonorm software, the horizon data generated there will be based on the coordinates you use.

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