I've got a 5 year old server with 2x8 core sandy bridge xeons, 32GB ram (I had 128GB total but went down to 32GB since it wasn't being used), an SSD for the OS,

I've got a 5 year old server with 2x8 core sandy bridge xeons, 32GB ram (I had 128GB total but went down to 32GB since it wasn't being used), an SSD for the OS, and 8 hard drives from 2-8TB each (~30TB total). I idle at 100W +/- 10W, which is ~$10/month. Sure, I could get a VPS for $5/month (with much lower specs), but the massive amount of local storage plus the ability to easily host multiple VMs really outweighs the extra $5/month cost to have everything local. I run a handful of VMs and docker containers, such as pfSense, emby (similar to plex), HAProxy, samba shares, snapraid+mergerfs for storage, etc. Worth it to me, might not be for others unless they're interested in server administration. When this dies I'll probably downgrade to something smaller and shoot for <50 watts, but it's not worth it until it actually fails.