Due to similar fact increasing number of corporations, which provide different commodities in the field of lightning intensify their efforts so that their products would use significantly less energy than in the past. That’s the reason why, the costs of their exploitation are in general considered to be significantly reduced, which is also connected with the fact that they are nowadays far more durable. Another reason why above mentioned area of industry has substantially developed during recent years is referred to the fact that the demand on similar goods is constantly rising. It is indicated by the fact that not only new buildings are grounded, but also they are important in cities in the night in order to raise the safety of the citizens and inter alia drivers of the automobiles. The more lights are available in a city, the more we are likely to avoid situations, in which we would participate in various car accidents. Nevertheless, raise of the light bulbs in a city is related to bigger costs rate, which proves that it is required to find a propare balance in the topic of lightning in terms of people, who are responsible for government of every city. Owing to this kind attitude they can better care about the structure of a budget.