A new solar breakthrough may overcome a long-standing efficiency barrier. Researchers used a “spin-flip” metal complex to capture and multiply energy from sunlight through singlet fission. The result ...

The world’s cheapest power source is scaling at warp speed, pushing coal, gas and nuclear aside.

A cluster of recent laboratory advances in ultra-thin solar cells suggests that lightweight, flexible photovoltaic devices may be able to move beyond niche prototypes if researchers can solve ...

Wind energy infrastructure doesn’t produce power if the air isn’t moving, and solar doesn’t generate power if the sun’s not out. But that doesn’t mean that either source of energy is "worthless" ...