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The aim of the study is to develop methods for assessing the efficiency of innovation and investment projects in the energy sector of the economy. As a result of the analysis of existing approaches, the modern problems of assessment are revealed, and possible ways of their solution are identified. A comprehensive analysis of the impact of innovation projects was carried out, and indicators and criteria for assessing their efficiency were determined. The assessment methods were structured on the basis of a combined approach, adequate to the target orientation of the projects, and a set of methodological recommendations was developed for assessing the efficiency of innovation and investment projects in the energy sector.

The purpose of the research is to develop a mechanism for managing the innovative potential of a development organization, which is capable to ensure the transformation of real estate objects due to the changes in market needs. The main approaches to the development of innovative potential of economic systems are presented. Efficiency criteria of management of innovation potential of development organizations are formed. A model based on joint use of system and resource and potential approaches to the management of innovative potential of a development organization is formed. The analysis of modern tendencies of development of innovative potential of economic systems, based on rationalization of management of innovative potential of a development organization is conducted.

The article deals with the main aspects of construction of Bush sites in the difficult conditions of the far North. The main focus is on the effectiveness of the introduction of innovative technologies in the construction of road surfaces in such conditions with the use of nano-fiber concrete. A comparative calculation of the economic efficiency of using such technology with traditional ones is carried out.