Custom-Bilt Metals. Unlike racked rooftop solar panels, the maker’s Fusion­Solar system is factory-fused to its standing-seam metal roofing panels, allowing the system to blend in without penetrating the roof. The thin-film laminate panels can be safely walked on after installation, and can withstand winds up to 160 miles per hour. Available in 9- and 18-foot lengths, FusionSolar can be scaled to deliver up to 120 kilowatts of output. Because it is factory-applied, the system can be installed by any contractor with standing-seam roofing experience, and electricians can make connections to the home’s electrical service. FusionSolar can earn projects seven LEED points, and is eligible for a full 30% tax credit. 800.826.7813.