The Plug With Another Purpose
Keeping the lights and water on can be expensive when you’re trying to keep food in your belly and clothes on your back in a time when living expenses are continuously rising. We try to cut back any way we can, so when we hear about a device that will shave dollars off our electricity bill, we’re undoubtedly tempted to try it.
The devices u/360_face_palm is referring to operate on the principle of power factor correction, which works when you’re dealing with extra large buildings, but not homes. You’re better off being diligent about turning off or unplugging devices that hog electricity and making sure to turn off the lights when you leave a room.