As far as I can tell it’s turned off by default. It has a sleep mode, but in my PC it still draws too much power to leave it in that state indefinitely. Windows Hibernate is surprisingly good in my setup, and it allows me to start a session on Windows, go to sleep, boot into Bazzite, then switch to Windows and pick up where I left off.

It’d be great to be able to bounce back and forth, but… yep, Hibernation not working for me. I’m sure troubleshooting can figure it out, but I don’t have the time or energy at this point.