[Note: this story is from a Sense employee]
I put a TP-Link HS110 on the power strip that powers the whole office and turned things on/off one by one. To my surprise the room was using 80W at idle, 60W of which was the subwoofer. Switching the sub from ON to AUTO mode makes it use 10W when idle, but I now use Sense to turn on the HS110 whenever I’m using the office and turn it off when I’m not. I only use the office once a week for a few hours so this was about $80/yr I was wasting for no reason.