My electrical rates are pretty reasonable - $0.13 and no peak demand rates, it's a flat rate. So, solar has a long break-even point for me on a purchased system. I do plan on living in this house forever.

So I'm wondering - would you do a system with a 10 year break even? 13 year? 15? What's the number that is the longest you'd accept for a system? Just curious what people think on this.