I think what I'd do is just build a light and outlet onto the bottom of a solar panel; cut the proper holes, drop solar panel onto roof, now there is a light bu

I think what I'd do is just build a light and outlet onto the bottom of a solar panel; cut the proper holes, drop solar panel onto roof, now there is a light bulb and outlet in your ceiling. But I have no idea if this is practical; is there a lot of caulk in the developing world? No idea. But "all in one" seems the most foolproof to me.