New technology could be twice as efficient at converting sunlight to electricity.
Panasonic reveals a design that surpasses a 20-year-old mark for solar cell efficiency.
The workhorse of conventional solar power, silicon solar cells, could soon be cheap and efficient enough to beat fossil fuels.
U.N. negotiations are going nowhere, and greenhouse-gas emissions are soaring. It’s time to move on.
Huge differences in renewable energy and natural gas potential influenced the EPA’s proposed carbon regulations.
A new way to make the most efficient and powerful types of solar cells could help solar power compete with fossil fuels.
The EPA’s emissions targets will accelerate the use of natural gas in states that have resisted alternatives to coal.
Long considered a problematic way to reduce carbon emissions, regulations may be our best option.
A startup called Infinium promises to reduce a troubling source of carbon emissions.
A new type of flow battery could allow renewable-energy developers to store power until it’s most valuable.