A new solar roofing product designed by Forward Labs has the potential to generate comparable amounts of electricity as traditional solar panels, but with the advantage of looking like a traditional metal roof. See the YouTube video. It comes in several colors and can be integrated in the architecture without looking like solar panels.
Integrating solar roofing serves two purposes and may help them be cost effective. In recent news Elon Musk and Tesla have combined forces with SolarCity and have announced they will be unveiling a solar roof product this month in San Francisco. See the link.
Looks like this type of solar roof will soon be on the market. Stay Tuned.