If possible help me on this one:

I`ve got mayor problems on enhancing or better or improving electrical earth continuity out in the Klein Karoo region near Ladismith. There is no Eskom supply from a transformer whatsoever. It is all solar systems.
My neutral to earth is my problem because i dont have the advantage of a neutral coming from a transformer. Give some advice on how to do a better earthmat or earthspike option.

What I normally did is that I put earth wire with earthspikes underneath the new houses foundation but that seems to not the final answer.

the formula Z=V/2I is the one that give me some answers but dont come even close to that.

Thank you
Alewyn