Solar-powered laptops are nothing new. There's one called the Sol that's hooked up to clunky external solar panels. Then there was the Samsung NC215S with solar cells behind the display. But the Sol is really only practical in places where electricity is scarce and the solar-powered Samsung never really caught on.
Finally, Apple proposes a photovoltaic system may also be disposed between the rear panel and front-facing LCD screen. With the glass backing and electrochromic layer in transparent mode, light is able to hit photovoltaic cells, which in turn converts the energy into electrical power for storage or immediate use.
This post was originally published on Smartplanet.com