How is degradation applied in PVSyst? Is there any existing literature on this?
I can see that the Individual PV module Global degradation factor appears to be 1/2 of the average degradation factor in Year 1, then increases by the average degradation factor for subsequent years. E.g. if av. degradation factor is 0.4, year 1 global degrad. factor = 0.2, year 2 = 0.6, year 3 = 1.0... etc.
Does this mean that PVSyst just applies the degradation factor at the 6month point, or is it more sophisticated than this?
Is degradation applied progressively, e.g. degradation adjusted month = 0.5%/12 month * generation, or at a higher/lower granularity?
Also, what does this mean in the context of monthly results in the simulation? is it fair to assume that each month of simulation already has a monthly aging factor applied to it?
Context: I am looking to apply degradation factor to the nearest month for monthly generation benchmarking purposes
