If you don’t already know this, you should look into used solar from solar power plants. They cycle out their equipment on a schedule, so it’s still got most of its life left, but for like half the price of new solar.

Downside is you have to figure out all the parts you need yourself, and get the whole shebang shipped, which can be expensive if you don’t live near where they originate (still less than new solar, ofc). You also need to arrange to install and hook them up. The install portion can easily be done by anyone if they are relatively handy, and then just have them professionally connected, which saves even more.