I'll take your word for it as there's dozens of ways to build a panel and some do contain rare earth elements but I don't know how widespread they are because t

I'll take your word for it as there's dozens of ways to build a panel and some do contain rare earth elements but I don't know how widespread they are because they are probably expensive. But the point still apply because even if they don't contain REE they contain other elements that are also finite. Also consider batteries which will be required for load balancing, lithium is very far from abundant and it's extraction is very far from green.