 So after the tax credit that you'd get, the 30% that just comes right off, I'd get it back on next year's taxes. That equates to about a 7.8% return on what I would save. So obviously I don't have to pay tax on money that I saved, but if I invested it, I end up having to pay tax eventually on money that's invested. Man, you really want some solar panels, don't you? No.