The barebone pc doesn't really sleep when not in use, almost full watt usage?

[User821]

It draws around 10 instead of the usual 11-13.

I thought it (minipc from china) would start auto hibernate or something when not in use? Is this not the case? I tried entering bios of it but couldn't think of what to change to make it draw as little power as possible when not in use.

As of right now I'm simply powering it off during night ... Any main settings to change to make it stop wasting energy when not in use?
I have the opnsense settings enabled for PowertD and hiadaptive on all.

[cookiemonster]

a firewall will always be running some services, that's its duty so it will draw power. Sleep/hybernate hasn't been a desired or built in option on any distribution that I am aware of.
They rely on idle states cpu to os and viceversa to reduce power at a cost of responsiveness. PowerD is what you can use and you have. If with that the power draw is inadequate, it is a question for the cpu maker, the freebsd people or the manufacturer. Or all three . Not for OPN.
By the way 10 watts at idle is not bad, in fact it is good. I doubt you can get less. You've squeezed that lemon to the max.

[CJ]

NICs can also draw a decent amount of power.  If you watch some of ServeTheHome's videos, you can see big jumps in switch/router power usage just by plugging in a cable.  This is one of the reasons people recommend 10g fiber over 10g copper.