Okay, but again, it's a far cry from "the price doubles" to "make these in your backyard or you will not have them". To make a good, efficient solar panel requ

Okay, but again, it's a far cry from "the price doubles" to "make these in your backyard or you will not have them". To make a good, efficient solar panel requires materials and equipment incompatible with backyard manufacture, especially in a collapse scenario. It's a neat hobby, but if your goal is just "have solar panels", you are strictly better off buying them than making them.