Lumeta has developed this sweet solar sticker panel. I have installed solar panels before, and this my friends looks to be an excellent option for flat roof installations. I wonder how it would work on a residential roof.

This has got to be one of the easiest installations I have ever seen. Of course they are not telling you the whole time (you would still need to wire them into the electrical box, have an inverter installed etc), but you could easily do that whole roof in a couple days with this system. Hey big box stores, guess what should be on your roof right now…(hint, solar panels).