The power supply for the electric motor is a lithium - ion battery stored under the rear seat so it takes up no seating area space. (thesupercars.org)
Solar panels on the wings feed four electric motors, and batteries store enough energy to allow the plane to fly through the night, something no other solar plane can do. (discovermagazine.com)
To go completely off - grid and have batteries store excess power would have added approximately 20 percent to our up - front project costs. (gigaom.com)