detecting periodic correlation. We illustrate it using a data set of spot electricity prices from the Nord Pool Power Exchange …

of exploiting the energy of different type. When uninterruptedly a demand for the energy is growing, and abilities of … increasing the supply for her are limited, we can deal with the occurrence of an energy crisis. The article is moving the subject … matter of an global energy crisis. A definition of an energy crisis, his genesis and effects were included in it for world …