This document calculates the grounding system for an electrical installation using the Dwight method. It provides calculations for both the horizontal and vertical components of the mesh grounding system. For the horizontal component, it calculates the resistance of the mesh, mutual interference resistance, conductor resistance, and total conductor resistance. Similarly, it performs these same calculations for the vertical component. It then calculates the total resistance of the grounding system mesh and notes that in practice the geometric layout would need to adapt to the terrain.