The present research prioritized the most important direction of energy power transformation—energy sector digitalization—and its contribution to the achievement of the sustainable development goals focused on climate change mitigation and responsible consumption and production. The authors evaluated the economic efficiency of the implementation of digital tools due to the decrease in energy production costs. The evaluation was performed using the energy cost calculation method before and after the implementation of digital technology, and the digital technology cost calculation method based on the technology readiness level, introduced for the first time. The study demonstrates the advantages of energy power digitalization worldwide, including the achievement of the declared goals of sustainable development and the transition to low-carbon energy. The scientific results obtained are valuable for scholars who carry out research in the area of the efficiency of economic digitalization, since they hold for all countries and types of energy generation. The directions of further research include the development of an analytical notation to show that the digital technology cost also depends on the speed and volume of its distribution, as well as the level of technological development of material and technical resources in the industry and in the country, and also the labor and capital availability.

Modern methods to calculate the operating (operational, maintenance and repair) component of the cost of electricity for nuclear power plants (NPPs) include the number of disparate techniques calculating the cost of materials, labor costs, machinery and equipment depreciation and amortization, overhead costs, and others. Maintenance and repair expenses (MRO) amount to approximately 20 % of the electricity cost. As a rule, they are calculated in fractions (percent) of amortization expenses. Subsequently it leads to a significant deviation of actual costs from the planned ones, making resource planning more difficult. Thus, the development of unified calculation technique of NPP MRO cost is a highly topical issue. The study is based on Russian and foreign research in the field of enterprise and industry planning and management, published in scientific periodical publications and Internet. Analytical, logical, and engineering-economic analysis are applied. This paper represents an attempt to systematize the organizational and methodological support of MRO implemented at Russian NPPs. The result of the study is the development of MRO cost calculation technique which considers the peculiarities of planning, preparation, arrangement and carrying out of NPP repair work. The technique counts rationing of labor, equipment, and materials costs; calculation of repair personnel wage including the allowances, surcharges, and bonuses for work in severe environment (high / low temperature, restricted conditions, work at height, in special clothing and with the use of personal protective equipment, etc.), in ionizing radiation environment. The method to calculate each component of the NPP MRO cost considering the fact by whom repair works are carried out (NPP staff or contractors) is given. The developed technique provides an increase of the accuracy of calculating the NPP MRO cost causing the timeliness and resource availability planning. It leads to NPP economic efficiency in the domestic and global nuclear technology market.

Украинцев Владимир Федорович-кандидат физико-математических наук, старший научный сотрудник, ведущий специалист Института специальных систем. Государственный научный центр Российской Федерации-Физико-энергетический институт им. А.И. Лейпунского, пл. Бондаренко,