With more than four billion smartphones in the world, that's billions of watts of electricity that could be saved if everyone switched to solar chargers, which simply need to be placed near a sunny spot in your home.
Over the course of a year, a traditional wall charger uses about 7 KWh of energy to charge your phone (assuming you plug it in every day), and a plugged-in charger uses energy even when it's not charging anything. With more than four billion smartphones in the world, that's billions of watts of electricity that could be saved if everyone switched to solar chargers, which simply need to be placed near a sunny spot in your home.