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First Solar Modules and "true-tracking"


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First Solar recommends that back-tracking not be used when modeling with their modules. However, simulations run in PVsyst without backtracking have near shading losses that are about three times what they are with backtracking - which seems perfectly reasonable. However, am I missing a setting specific to FS modules that allows for modeing with no backtracking, that doesn't cause near-shading losses to triple?

From reading the FS documention they recommend no backtracking to take advantage of the linear shading response of these modules.

Thank you!

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