No other means of storing energy may be able to reach the scale required to run Germany on solar and wind power.
It says it needs to improve its thin-film solar panel technology to compete.
Infrared emissions above the epicenter increased dramatically in the days before the devastating earthquake in Japan, say scientists.
Japan is desperately trying to replace its nuclear-power capacity with renewables. It still has a long way to go.
A California jail offers a glimpse of the economic and environmental benefits of locally generated energy.
General Atomics has applied for DOE funds to commercialize a nuclear reactor that could lower electricity costs by 40 percent.
A promising advance that came to nothing suggests what it will take to make cheap batteries for electric cars.
Humans may be wired to respond more to immediate issues like fracking than longer term ones like global warming.
The electric vehicle battery maker edges closer to bankruptcy.