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⎯The paper presents a comprehensive analysis of the expected effects and benefits for regions from the establishment of petrochemical clusters and the implementation of development strategies for mining companies as part of the East Siberian Oil and Gas Complex (ESOGC) megaproject. The ESOGC megaproject is considered an instrument for analyzing the commercial efficiency of investment projects of companies, federal and regional tax revenues, the balance of strategic investment priorities of Gazprom and Sibur in the development of hydrocarbon deposits in Eastern Siberia and the Sakha (Yakutia) Republic. The experience of Amur and Irkutsk oblasts in the development of regional policy for localizing the expected effects and benefits of gas chemical projects of Sibur and Gazprom are analyzed, as well as organizational and managerial solutions for regional authorities to facilitate the implementation of these projects.

Recently, much attention has been paid to reducing environmental damage to the environment throughout the country. Over the past twenty years, Public Joint-Stock Company “Gazprom” has been working on the implementation of environmental projects for the transfer of motor vehicles to alternative motor fuels. The report suggests a toolkit for assessing the impact of energy saving projects on the environment, based on the adaptation of the input-output model for the fuel and energy complex. The model is based on the assumption that the main amount of greenhouse gas emissions is produced by burning fossil fuels. As an indicator for estimation of environmental efficiency of the projects has proposed the coefficient of carbon intensity - the amount of carbon dioxide released per unit of the final product of the industry. This ratio reflects the impact of industries on the environment. The advantage of the input-output model is the opportunity to conduct a comparative analysis of the environmental load of industries on the environment and to determine the multiplicative effect of implementing energy-saving projects.