Gradient's advanced window unit can heat and cool 500 square feet of your home. And you won't need an electrician.

The research group used a luminescent solar concentrator (TPV ... published in Advanced Science. “The SSH window can save the annual heating, ventilation, and air conditioning (HVAC) energy ...

Dutch researchers have developed a solar window concept that blocks heat from the sun in warm weather and absorbs heat during colder periods. The glass can change its infrared transmittance when ...

Gradient's advanced window unit can heat and cool 500 square feet ... You can reach Jon at joreed@cnet.com Expertise Energy, Solar Power, Renewable Energy, Climate Issues, Virtual Power Plants ...