@Forgetful_Gynn @sickburnbro >close to the equator.
Southern Europe isn't anywhere close to the equator. It's further north than Texas.

>angled roofs which only get the proper light a portion of the day
Nobody puts solar panels flat, angled makes the most sense inclination wise. Shadows are a problem but even if your roof runs East-West you can just put panels on both sides, even north-facing is worth it.

>it probably does get pretty piss-poor after a while.
Everything decays. If you think 30 years of solid output and probably more at reduced efficiency isn't good enough, you do you.

>What's the cutoff voltage for replacement in the warranties?
depends on the supplier. It's basically never cutoff "voltage" though, not sure where you got that from. It's a percentage of the rated output in watts, most of the time.