The function of grounding is to neutralize disturbances that occur in electric voltages such as short circuits and leakage currents in equipment. So the grounding system that already used will be able to drain the disturbance that occurs due to leakage currents or short circuits to the grounding terminal and then delivered again to the conduit or conductor and then delivered again to the grounding pole or electrode, then the electrode will neutralize it to the ground. In regard to this point, the grounding system is expected to minimize damage to equipment due to interference with electrical voltage. The smaller the grounding resistance value, the better the grounding system. The results of the analysis show that the value of grounding resistance will be smaller if the depth of planting, the number of electrodes planted, and the planting distance are increased. The Tomat feeder distribution substation itself still has grounding values that are not in accordance with the PUIL standard, article 3.13.2.10. This is due to the lack of moisture in the soil.