A comparison chart shows just how big.
From tattoo batteries to paint that powers a car, from floating solar farms to wires made from DNA, catch up on the year's most exciting energy news.
A pilot program will be available to an unspecified number of Model S electric-car owners, who will be invited to take part in the test.
A new study says that electric cars, charged by anything except coal, are preferable to gasoline vehicles.
For the first time, the Air Force has an entire fleet of plug-in electric cars.
This week we feature tech that takes us somewhere -- from highways to skyways, from Mother Earth to Mars.
Amsterdam's Model S taxi will join a small fleet of electric cabs operating in a handful of global cities.
New lithium-ion technology could be a game-changer for electric vehicles and consumer electronics. Continue reading →
This week, we take to the skies with technology that will put the wind in your sails.
From Mini to Bugatti, here are ten of our favorite cars on display at the Paris Motor Show. Gobble 'em up.