History of creation and development of the Common energetic zone exemplified by the Irkutsk region in 1950-1995s"

In this article the author examines rates and features of creating thecommon power line network of the Irkutsk energy system (1950-1990s.) and points to its importance for urban and agriculturedevelopment, as well as for establishing cooperation with other energy organizations (for example Buryatenergo andKrasnoyarskenergo). In chronological sequence a brief history of creation and development of Irkutskenergo power lines is providedin the article. The article states: 1950-1960s - creation and upgrading of urban networks; the beginning of establishing the energyconnection between cities (the first Angarsk-Irkutsk power line with 110kV electric voltage and Irkutsk-Bratsk power line with220kV electric voltage); 1960-1970s - intensive building of high voltage power lines with 220kV and 500 kV electric voltage (PL-220 and PL-500). The beginning of the interaction of Irkutskenergo with other regions. Growth of the electrical networks determinedthe necessity of creating the specialized network enterprises to control the work of the networks more efficiently.; 1970-1980s -intensification of the parallel work of the Irkutsk power system with Buryatenrgo and Krasnoyarskenergo; 1980-1990s - greatattention is paid to such issues as improving the power supply of agricultural consumers; 1990-1995s - modernization of outdatedpower lines. Centralized and uninterrupted power supply for consumers, except in remote areas because of the undeveloped lowvoltagelines. O.O. Gotovko points to the role of high- and low-voltage power lines of Irkutskenergo in creating the Commonenergetic zone exemplified by the Irkutsk region. In conclusion, the author concludes that, since the moment of its creation PL-500 isthe main energy artery of Eastern Siberia together with other power lines. It gradually became power supplying for the entire socialand industrial infrastructure of Irkutsk, Usolye-Sibirskoe, Cheremhovo, Svirsk, Angarsk, and hundreds of middle-sized and smallsettlements of the Irkutsk region.

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