I currently have an old windows tablet on the wall, with fullscreen browser running and connected to a charger 24/7 - the power drain amounts to less than 10EUR

I currently have an old windows tablet on the wall, with fullscreen browser running and connected to a charger 24/7 - the power drain amounts to less than 10EUR a year. I'm looking into turning off the screen based on motion sensors, but... the payout just isn't as much as it seems at first.