U.S. scientists say that emerging photovoltaic technologies will enable the production of solar shingles made from abundantly available elements rather than rare-earth metals, an innovation that would make solar energy cheaper and more sustainable.
San Antonio Family First In Texas With Dow Powerhouse Solar Roof
The Ross’ family-owned business, Ross Electric Co., was chosen to connect Powerhouse below the rooftop. The family was able to see the installation hands-on, and decided to be one of the first in the country to install this total residential roofing solution that not only protects like a standard asphalt roof but also generates solar electricity, turning the roof into a source of value and savings. Said Ross: “I am proud to invest in my home with such an innovative and good-looking product. I expect that my Powerhouse roof will reduce my utility bills by about 40 percent and will increase my home value overall.”
Newswise — PHILADELPHIA, Aug. 21, 2012 — With enough sunlight falling on home roofs to supply at least half of America’s electricity, scientists today described advances toward the less-expensive solar energy technology needed to roof many of those homes with shingles that generate electricity.
James C. Stevens, Ph.D., helped develop Dow’s PowerHouse Solar Shingle, introduced in October 2011, which generates electricity and nevertheless can be installed like traditional roofing. The shingles use copper indium gallium diselenide photovoltaic technology. His team now is eyeing incorporation of sustainable earth-abundant materials into PowerHouse shingles, making them more widely available.
“The United States alone has about 69 billion square feet of appropriate residential rooftops that could be generating electricity from the sun,” Stevens said. “The sunlight falling on those roofs could generate at least 50 percent of the nation’s electricity, and some estimates put that number closer to 100 percent. With earth-abundant technology, that energy could be harvested, at an enormous benefit to consumers and the environment.”
“The solar tiles can generate a potential 500 watts per 100 square feet, and they’re basically ready to go from the day they’re installed.”