Soon, laptops will be able to use USB ports for charging

Appearing on the Internet information indicates that it will soon be possible to charge laptops through USB ports.
What is the basis of this revolutionary decision?

USB ports are used to solve many different situations - connecting external memory to a laptop, peripheral devices, lighting the keyboard at night, or even heating a cup of hot water. As it turned out, soon these ports will also serve as a jack for charging a laptop. All thanks to the USB PD standard. This will allow for a computer with approximately 100 W of energy more than is possible with the current 3.0 standard used.

Of course, this connector also supports current functions (for example, the ability to download data or connect peripheral devices). The first computers with USB ports supporting the new standard will appear as early as next year 2014.