I have a friend that installs solar for a living here in KY. He has 30 panels on his house.
Both of us feel that it is not cost justified. That’s not the reason to go solar. Yet.
The reason to go solar is to be safely off the grid. It’s a form of independence and gives a nice warm feeling that in yet another way you are immune to the collapse.
i.e. The only way it makes sense is to support the prepper world view. And that is a pretty good reason, frankly.
Combination of wind and solar to charge deep cycle batteries for inverters seems reasonable for off-grid, low energy living.
Maybe even 12vdc based circuits, RV style, with LED lighting, and propane RV fridges.