The Apollo II PV Roofing System provides maximum power. Unlike rack-mounted solar arrays, these low-profile panels are installed and flashed like skylights and can be weaved into shingles to create a nearly seamless appearance, the firm says. The 12-pound modules are rated to withstand 110 mph winds and 250 pounds per square foot loads. CertainTeed. 800-233-8990. www.certainteedsolar.com.