roofing materials that generate electricity like solar panels shingles

This image been popping up on facebook and all over the social media network advertisements for solar panels new technology that the government will have incentives for it. It’s actually solar panels same size as typical roofing shingles and it generate electricity.

Well if you’ve been searching the internet for similar products or been having some interested in similar products chances are you would see this picture with advertisement on saving money on electricity with solar power. I think it’s a great idea, but I’m not sure how much it would cost to install and how reliable in term of how long does it last? also how would you ever step on the roof-top again without damaging it?

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