This is a good answer.

Nuclear for the base load that can be ramped up/down as needed, and using renewables like wind/solar/hydro as much as possible.

In my country it’s mostly hydro, which is fantastic, but would be even better if we had nuclear as a base load solution and hydro to catch the peaks and for export.
Sadly most people fear nuclear here, so it won’t happen soon.

Proxmox with LXC’s and a few VM’s.
Often with Portainer as well.

It’s just nice to use and easy to automate backups.

I used to run barebone on Debian, but I accepted that I’m not good enough in the terminal and to used to graphical solutions to go back.