Microsoft's decision to decouple the Kinect from the XBox One could actually save you a lot more than $100!
It turns out that the XBox One and to a lesser degree the PS4 consume vastly more energy than their predecessors. Having the Kinect constantly listening and watching for commands night and day even when no one is around consumes more than half of the 289 kWh used annually by the Xbox.
Both consoles also use a disproportionate amount of juice just to stream media because they are so overpowered for the task. Streamers like Roku, Apple TV and Chromecast use minimalist hardware to provide the same task, consuming just 1-2 watts while the consoles take nearly 80-90 watts. ?