Get the best from your system while listening without any cost

Most of this can be avoided by wiring your system on a separate spur connected immediately after the supplier's fuse and connecting all the house mush further down another line.
Most of us have done that.

Of course that won't protect you from your neighbour's mush coming in along the electric company's line, but the source of that is a long ways away so it will be at a much lower level.

In another thread I explored the possibility of earthing the system spur with a separate earth post.

Step 1.  Avoid solar panels.

Step 2.  You are done.

georgehifi, please list your system from first power cord through to speakers, preferably with images. Thank you!  

My tinnitus will block it out.

Georgehifi, it may be measurable but that does not mean it is a problem.
I use ESLs and nothing in the house seems to bother my system. It even sounds great when the generator is running. Having said all that my house has it's very own transformer. The electric company made me purchase and install a separate Lawn wart because they were afraid my work shop which runs on a rotary 3 phase converter would dim everyone else's lights. I was not thinking about the HiFi when the wart was installed but I am effectively isolated from the rest of the world. However. I am not isolated from myself and we run microwaves, laser projectors, AC, humidifiers, whole house vacuum cleaner, big Sub Zero refrigerator, little Sub Zero refridgerator, wine keeper and ice maker, hair driers, Sous Vide cooker, vacuum packer, pressure washer and numerous small appliances not to mention my workshop. I have never heard any ill effect from any of this and the only thing between the main line and my system is a sacrificial whole house surge protector.