A solar-powered phone charger is the kind of accessory that sounds unnecessary until you find yourself far from an outlet and ...

A bargain! "iPhone X Tesla by Caviar is equipped with a solar battery that transforms the light energy and replenishes the phone battery power with its help," reads the product description on the ...

A couple of years ago my roof panels generated enough electricity in one month that I didn’t have to pay my energy bill for the rest of the summer. And, like the calculators of old, it seems that big ...