Battery swapping is fast, but the economics are still uncertain.
New tech will lower the cost of carbon capture, but the sheer scale needed to reduce emissions prevent it from being a panacea.
A novel software tool could make it far easier to bring new energy storage technologies to market.
Better Place got it wrong: First make a car that people want, then build infrastructure to let them drive it cross-country.
Tesla's supercharger network will be equipped with solar panels and batteries to ride-out power outages.
Tesla Motors' loan repayment is a bright spot for the DOE loan program.
A $300 million project seems to have failed to produce a cheap way to make fuel from algae.
Building solar and wind projects in the wrong place is wasting billions of dollars in Europe.
An International Energy Agency report says investments in oil technology will lead to a worldwide supply boom.
We've hit 400 ppm of carbon dioxide, but we won't know what that means for decades.