Thanks to such a fact rising number of companies, which provide different goods in the topic of lightning step up 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 mostly thought to be considerably reduced, which is also related to the fact that they are contemporarily significantly more durable. Another reason why above mentioned area of industry has considerably developed during recent years is referred to the fact that the demand on this kind products is regularly rising. 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 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. Nonetheless, raise of the light bulbs in a city is related to greater expenses rate, which implies that it is required to find an appropriate balance in the topic of lightning regards people, who are responsible for government of every city. Owing to such an attitude they are likely to better care about the structure of a budget.