Solar shingles...are they a viable option right now? [View all]

I'm completely sold on solar for our new house, but my wife is cool to the idea of putting panels on the front-facing (south) roof of a house we just designed in an aesthetically pleasing way. The shingles look fine, but my understanding is that they are nowhere near as efficient (like half) as the panels. Is there a reliable comparison of the cost effectiveness of these options?