The automaker blames rapid battery capacity loss on high mileage.
A test of driving range by Nissan Leaf owners seeks to find out if the electric car's battery capacity is being negatively affected by hot temperatures.
Siemens Energy cuts 37 percent of U.S. workforce due to uncertainty over whether wind tax credit will be extended.
The government responds to business community pressure by shelving a plan announced last week.
Startup Semprius will soon open a plant to produce is concentrated solar modules.
Government plan to idle nuclear stations will mean increase in fossil fuel use, including imports, and a larger role for renewable energy and efficiency
Startup Lilliputian Systems lands $40 million from Russian nanotech fund to manufacture pocket-size fuel cell chargers for small electronics.
Joule Unlimited says its new facility will lead to cheap ethanol from non-food sources.
Cheap Chinese solar panels helped but solar power growth is also being driven by renewable energy mandates and new business models.
After a yearlong test, Intel is designing servers to operate submerged in oil.