PVsyst Ageing and LID

[edujim57]

Hello everyone,

If degradation is included in the simulation so as to calculate the output for a specific year, why PVsyst considers the same LID loss factor in year X as in year 0? As I can see the different variants, LID is counted every year and, in my opinion, that is false. Has anyone solved this? Thank you in advance.

Best Regards,

Eduardo

[André Mermoud]

The LID is an initial degradation of the PV module's performance, arising during the first hours of exposition.

It is obviously not "recovered" at the end of the first year !

The degradation is permanent, this means that it has indeed to be applied to each simulation for each year.