The landmark thin-film building integrated solar roofing project built by the National Association of Home Builders in Maryland in 1996.
PHOTO: STEVE HECKEROTH
Uni-Solar's breakthrough solar electric roofing comes in rolls or shingles and can be applied directly over plywood. A thin layer of amorphous silicon generates the electricity. The silicon is applied to a stainless steel foil and then coated with a flexible, weatherproof polymer.
Who would ever know this roof is a solar electric power plant?
Renewable-energy specialist Stephen Heckeroth driving his electric tractor. He uses solar panels (including those visible on the barn roof in the background) to charge the batteries that power the tractor.
Pam Chang beams from the top of her new thin-film Building-Integrated Photovoltaic (BIPV) roof on her home in Berkeley, California.
Even a south-facing porch can provide homemade electricity.
Net metering is a win-win for the utility and the homeowner.