What does the National Electric System mean?
National Electric System means the result of three operational phases: generation, transmission and distribution of electricity.Terna's activities are focused particularly on the second, i.e. the high and extra-high voltage energy transmission (380, 220 e 150 Kilovolt).
When we talk about energy we have to take into consideration that there is no source of electricity in nature.To obtain it, therefore, we have to produce it and this is done in various types of power station that create electricity from various sources.Once it has been produced, the energy is transported by Terna to the production centers, in the area that it will be used, through a complex series of lines, power stations and transformers. After transmission comes the distribution.However, there is a great difference between the two activities.For the sake of simplicity, let’s use an analogy: Terna’s transmission lines are like highways, connecting one city to another, from "tollgate to tollgate"; distribution lines, on the other hand, are like the streets which connect the various points within these cities.