My install is on Arch linux, I just installed incus and cockpit-machines and (from memory) that was enough.
But, yeah, it's definitely a step away from a full GUI...
But I think that's part of the appeal (to me)... there's a lot of things preinstalled with Proxmox, (and XCP-ng, etc), that I'll just never use... so if I could get that old Ras Pi3 as a 2nd node in the cluster without all the fluff... maybe that's a good thing?
I used an old thin client as a pfSense firewall for years... but the DSL into passthrough mode and effectively made that a modem, so in effect pfSense was the "router"
If you don't have something like that, it's a step up from a standard ISP one.
Not sure about long term power consumption though...
I am in no way even slightly an "expert" here, but Incus could be considered a lightweight Proxmox..
They're both going to run some VMs and / or containers, but with Proxmox you get the overhead of the fancy GUI.
So if your host(s) aren't running guests at >90% load, then there won't be any difference in performance.
I've recently installed Proxmox because everyone else uses it (and VMware's free ESXi is now dead)... but after pulling my hair out trying to get some things done, I'm seriously looking to move to Incus.
There's another post here somewhere (the one about free ESXi being killed off) with someone explaining more about Incus, which seems like it's the way to go... maybe worth a search.
But what about the movies where the actors are typing commands and a visual GUI is moving around and updating on the screen (and making sound effects too).
Not sure where you are in the world, but I'm using OpenEnergyMonitor
Personally, I'm using their Raspberry Pi version (EmonPI) to monitor my total house energy - grid in, solar in and solar export and pull the data directly into HA.
But there's other options available too, like the 6-channel monitoring, so you could potentially monitor separate circuits and / or high energy systems like heatpumps, etc. They have options for 3-phase too...
In my case, power in AND power out to the grid both flashed the LED on the supply meter (mentioned elsewhere here), so I had to go with CT sensors which I put inside the consumer unit... had a little trouble with calibration due to the electrical noise in there, but +/- a few W is nothing when I have to heat my home with electricity at 4kW+
They only see your public IP address (ie your router), so all devices on the private side will appear to be the same source.
So, if your laptop and your server (and anyone else at the same location) are connected to the internet via the same router, then, you're the same source.
My install is on Arch linux, I just installed incus and cockpit-machines and (from memory) that was enough.
But, yeah, it's definitely a step away from a full GUI...
But I think that's part of the appeal (to me)... there's a lot of things preinstalled with Proxmox, (and XCP-ng, etc), that I'll just never use... so if I could get that old Ras Pi3 as a 2nd node in the cluster without all the fluff... maybe that's a good thing?