If you don’t want to be on the bleeding edge and want a distro with longer support, CentOS Stream isn’t bad. Sure, there was some controversy surrounding it, when Red Hat killed the old CentOS. But ignoring that, the distro itself is pretty good and stable.
The grid needs the supply and demand to be balanced for the power to be stable. Otherwise you get fluctuations in voltage and frequency which are both bad for anything connected to the grid.
There can absolutely be an oversupply of energy. We need to either find ways to store that surplus energy, or use it for something positive like desalination or carbon capture.