Thanks to such a fact increasing number of companies, which give different products in the field of lightning intensify their efforts so that their goods would use significantly less energy than in the past. Hence, the expenses of their exploitation are mostly believed to be substantially reduced, which is also referred to the fact that they are at present substantially more durable. Another reason why above mentioned area of industry has substantially developed throughout recent years is related to the fact that the demand on similar goods is constantly improving. It is proved by the fact that not only new buildings are grounded, but also they are important in cities in the night in order to improve 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 different car accidents. Nonetheless, increase of the light bulbs in a city is related to bigger expenses rate, which implies that it is required to find a correct balance in the topic of lightning in terms of people, who are responsible for government of every city. Thanks to such an attitude they are likely to better care about the structure of a budget.