Depends on your motherboard, truenas is just software.
My NAS uses just over 1kw a day, which is around £0.22 a day. I'll check at some point if my motherboard has wake on LAN, as it can probably go off most of the night.
I mean its nothing too annoying, I have a bookmark now but for most "new" people, having easy access to these pages, especially the forums could help a lot more!
When I go to https://hexos.com/ on my PC i only have the option of getting started/buying it, no menu for forums/deck
But when you view it on a phone you get a nice menu which shows all the places.
Would have helped me when setting up truenas to have a little play, had to run a cable up the stairs 😝 didn’t have the drop down in the bedroom at the time.