I am installing my first totally off grid solar array to a new home. All of my dc voltages will be inverted to a/c except for a few d/c ceiling fans. My problem is how to properly install a system neutral since I am totally off grid. The nearest pole structure is 1 mile away and my soil conditions are shale with little to no good dirt. I am concerned since this is my sole source of grounding. Does anyone have any suggestions? I have considered a ground grid, concrete encased and even grounding to the well pipe that is yet to be installed but I want to be sure that this will be effective. Any help would be much appreciated!