Our life would be unthinkable without the use of Electrical energy. The growing utilization of the latter is a decisive prerequisite for rapid development in industries and agriculture.
A few examples will show the importance of electrical energy.
Thus, electrical lighting is indispensable for working during the dark hours of the day. With increasing industrialization, a growing proportion of electrical energy is use for the lighting of shops, offices, drilling and for outdoor lighting.
Man is relieved from heavy physical labor by the use of electrical machine or devices. The drive of machine, hoisting gear and lifting is enabling in simple form by the electromotor which in raillery transport also has the advantage over internal combustion engines.
There are many buildings where an air conditioning system including healing, cooling, and ventilations is installed for the generation of which electrical energy is required. At higher ambient temperature, foodstuff can only be kept for a prolong period of time in refrigerator or cold storage room which usually are been operated with electrical energy. Without electrical energy, there would be no broadcasting, no television systems, no telephone communication system or telegraph. I order to arrange automatic sequence of operation in production, device of control and regulation.
Engineering are required which, today, are driven almost exclusively by electrical energy. The consumption of electrical by the various branches of economics is quite different. The chemical industry and metallurgy have a particular high consumption. For the production of electrical conductor materials electrolytic copper and aluminum, very large amount of electrical energy are required
Finally as a matter of fact an electrical energy can be transported continently through large distance at low losses. On the other hand, the advantages that electrical energy can be stored only in a small at high cost. Production and consumption must be taken place at large at same time.
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