Degradation of solar panels when disconnected for extended periods (breakers shut at combiner box)

[Fenachrone]

I've seen a bit of talk about this topic here, but would like more clarity on the issue. The question is how much do panels suffer from not being
connected, just setting out there in the sun (no load on them, and breakers off at combiner).

Some commenters say that the solar panels will be significantly damaged over the long term when out in the sun, if not hooked to a load; others speak of minimal or no degradation.

So just how much, really, is the degradation? Any speculation on how much degradation there might be, say, per month? I've also heard that CdTe-based panels, or thin-film amorphous types, are most at risk, but silicon-based not much.

Thanks for any insights, experts!

 

[chrisski]

IMO, you’d not notice any significant difference between a panel five years from now left in the sun used and unused.