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

Douglas Romines springs for triple-pane windows, wood fiber insulation, and solar power to build an efficient Hudson Valley ...

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 ...