The methods of identifying potential economic effects in relation to the development and implementation of information systems at the initial stage are considered. Thus, at the time of determining the economic effects, neither the suppliers of IT solutions, nor the systems themselves, nor the logic and tools on the basis of which they are built have been determined. Only the goals, objectives and business requirements as to the planned target state after implementation are defined. In the framework of solving this problem, which is in the domain of uncertainty, an analysis of the main existing methods for assessing economic effects in modern practice is carried out to identify the weaknesses and strengths of these methods, as well as the possibility of their implementation. Based on a comprehensive analysis, the authors’ original hybrid methodology for calculating economic effects is proposed for the conceptual elaboration of the information component of the planned project Production Management Center of an oil refinery. An example of the final list of identified qualitative and quantitative expected economic effects is presented, as well as recommendations are given on areas of analysis and methods for decomposing business requirements in order to generate potential economic effects in the field of information technology at the stage of conceptual development of the project.
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