Smart Plugs are a great way to make your home smarter and more efficient. They allow you to control your lights, appliances, and other electronics from your phone or other device. Smart Plugs are easy to install and can be used to save energy and money by automatically turning off devices
From Wikipedia
Smart plugs were first deployed in the early 2010s as a solution for users, helping reduce wasted energy from unused or forgotten devices. This phenomenon is known as phantom energy, referring to the electricity devices draw even when powered off, increasing overall power consumption. Nearly 5-10 percent of household electricity is wasted on devices placed on standby mode.