Electricity Transmission and Distribution

The NRG Expert Electricity Transmisison and Distribution Report and Database offers a unique look at the global T&D industry. Since the advent of centrally generated electricity and its domestic uses; this industry has been essential for everything we are able to achieve today thanks to electricity.
The half century from 1880 to 1930 constituted the formative years of the history of electric power systems. The three components of the total system (generation, transmission and distribution) evolved in three separate stages. The first stage, in the earliest days of the supply industry, was the development of small local generators, initially providing power for only one user, or perhaps several. The second stage, in the last two decades of the 1880s, involved the discovery by Thomas Edison of the technology whereby a central generator delivered power to multiple users through a distribution system, and from this evolved the distribution networks. The third stage, which followed several decades later, was to link separate generators into a pool via a transmission system.
From 1890 until the First World War the major electric power utilities in the industrial countries like United States, Germany and Britain concentrated on supplying the most heavily populated and industrialized areas, with relatively small generators and local distribution systems. In the second half of this period the event which was to change the world and create new dynamics ripe for expanding electrical supply was the First World War from 1914-18. The developments which took place in the electrical supply industry in the 1920s have been likened to those that occurred in railway systems in the second half of the 19th century. Many railway systems were then interconnected and standardized with respect to gauge and equipment. Major routes were identified and up-graded and trunk lines developed. In the electrical supply sector, power pools were created and the outputs of large central generating stations were transported via high voltage transmission lines to distribution networks.
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