Wireless Power from Across the Room

A startup called Energous aims to let you charge your gadgets without plugging them in.

Do you want us to charge your phone? George Holmes asks. Normally, that would be an odd question. But Holmes is the vice president of sales and marketing for Energous, a company that is developing technology called WattUp that will allow you to charge smartphones, tablets, and other small gadgets from across a room without wires.