Are they for northern climates?
Meaning can we walk on them without slipping and sliding off when up there shoveling snow off? Or will the abrasion from a shovel destroy them? How do they react to extreme winds?
And cold weather durability. I’ve purchased several electronic devices over the years that fail around minus 20 or so.
Our roof spends 2 to 4 months with snow covering it when the electrical demand is at it’s highest.
Probably not. In New England the combination of sunny days and the long grey winters are not optimum for solar panels. Yet.
I bet they’d be reasonably wind proof.
They might work well in a warm, sunny tropical place like I live in but you you raise valid questions about colder climes