In every HV substations, protection from the direct lightning stroke is paramount. However, substations protected from direct lightning stroke using shielding wires at coastal region are found to be more susceptible to failure. This is because of accidental snapping of the earth wires after attacked by severely corrosion causing a short circuit within the substation. In this regards, use of lightning masts was proposed to mitigate this menaces. Despite low keraunic level at coast region, approximately 25 thunderstorms days per year, lightning is known to be capricious, unpredictable and probabilistic event hence cannot be ignored. This paper explores use of empirical curves to obtain the height of the masts and position within the substation. By use of empirical curves of <0.1% protection lightning exposure, 1.8×10−5 number of lightning expected to penetrate the substation, SP was obtained. In addition, integrating earth wire inside the masts was devised hence deterring the vandals from accessing the earthing system.