What I've been doing is running a cron at a certain time in the evening, shutting down the server, and am working on a WOL sequence from my pfsense box fired by a cron, to crank it back up. Since it sits idle for 12 hours out of the 24, I just didn't see a need to keep it sucking up electricity.

Of course, I'm not running any midnight, mass downloads of Linux iso's, and I have no other users save myself. If I had users, I'd pass the hat.