According to Musk, the Solar Roof is more affordable than conventional roofs with PV systems and should pay for itself in 30 years. (solar-estimate.org)
The coating reflects sunlight and heat, reducing the need for air conditioning, and costs just as much as conventional roof resurfacing, said Costlow, who directs the agency's Office of Administration. (scientificamerican.com)
«Solar roof is more affordable than conventional roofs because in most cases, it ultimately pays for itself by reducing or eliminating a home's electricity bill,» Tesla said Wednesday. (businessinsider.com)