Solar Impulse 2

Solar Impulse is the only airplane of perpetual endurance, able to fly day and night on solar power, without a drop of fuel.This revolutionary single-seater aircraft made of carbon fiber has a 72 meter wingspan for a weight of just 2,300 Kg, equivalent to that of a car.

The 17,000 solar cells built into the wing supply four electric motors (17.5 CV each) with renewable energy.During the day, the solar cells recharge lithium batteries weighing 633 Kg which allow the aircraft to fly at night and therefore to have virtually unlimited autonomy.[ http://info.solarimpulse.com/en/our-adve…]