New tech at Mobile World Congress could let you charge your phone when it's out in the sun or even under room lights.

Electricity usually runs one way, but EV and large home batteries could provide a vast network of backup energy to draw on.

Lenovo has cooked up a new laptop with a solar panel with sufficient energy-absorbing capability to turn 20 minutes of ...

A new study by researchers at the University of Illinois Urbana-Champaign describes a breakthrough in the field of organic ...