Due to this kind fact more and more corporations, which give miscellaneous products in the field of lightning intensify their efforts so that their commodities would use considerably less energy than in the past. That’s the reason why, the expenses of their exploitation are in most cases known to be considerably reduced, which is also related to the fact that they are contemporarily much more durable. Another reason why this topic of industry has significantly developed during recent years is related to the fact that the demand on this kind commodities is regularly increasing. It is proved by the fact that not only new buildings are grounded, but also they are needed in cities in the night in order to raise the safety of the citizens and for instance drivers of the cars. The more lights are available in a city, the more we are likely to avoid situations, in which we would participate in different car accidents. Nevertheless, increase of the light bulbs in a city is connected with greater costs rate, which proves that it is important to find a propare balance in the field of lightning regards people, who are responsible for government of every city. Thanks to similar attitude they are likely to better care about the structure of a budget.