I put Linux Mint on a small laptop I bought second-hand in 2020. This was after Microsoft decided it wouldn't support Win10 anymore and wouldn't allow Win11 on any of my current Win10 machines either. Now I'd been using this laptop to mainly watch Youtube videos for about an hour a day. And I'd charge it for about an hour or two a day as well. (I use it where it's not convenient to be plugged in.) With Linux though, it was draining a lot out of the battery while not plugged in, as in much more than Win10 was. This was obviously a battery problem of course, (and buying a new one fixed it), but I was surprised Linux used more power than Win10 in 'Suspend' mode. Very happy Linux exists though!