&gt;&gt;My original outlay would be in the 30-40K range with an ROI of over ten years.<p>So you&#x27;d be getting (saving) 4K annually from a 40K investment? Try getting that kind of return elsewhere.<p>Seriously though, the best solar strategy for the homeowner is do-it-yourself ground mount installs. If DIY is not your thing at a minimum get separate quotes for install and supply. The markup solar installers add to equipment is outrageous.