Powerbeam, a Silicon Valley startup, has developed technology which allows energy to be transmitted to laptop computers, and other devices, via a laser beam. A laser can transmit more energy than other methods, and the technology has built-in security measures.  The vision, of course, is to build out the laser and power detection infrastructure, so you can wirelessly power your devices, without cords and batteries.

San Jose Mercury News article here.

VentureBeat post here.