This paper presents an overview of how the lightning strikes and theire acts on power distribution systems can be modeled. Each piece of electrical equipment in an electrical system needs to be protected from voltage surges. To prevent damage to electrical equipment, surge protection considerations are paramount to a well-designed electrical system. Modern metal oxide arresters provide exceptional overvoltage protection of equipment connected to the power system. The development of the Metal Oxide Varistor (MOV), which is the heart of the modern surge arrester, did not happen overnight. There were many characters and many breakthroughs that made it possible. The MOV arrester was also the beginning of the end for the two giants in surge protection: The priority you give to surge protection depends on your willingness to take risks! Perhaps you think ”it’ll never happen to me”. Then you won’t have lost anything, but will have gained only very little. However, the subject of overvoltage is then a daily worry for you. But if you wish to be on the safe side, you should include surge protection in your corporate strategy.