The paper presents the findings of a terminological analysis of the basic definitions related to the results-based method of energy saving management at the regional level. The authors highlighted the features of the regulatory framework for regional energy saving management. Ambiguity and incompleteness of the terminological system, lack of coherence in terminology of newly-introduced and earlier-accepted regulatory documents make the research important. The aim of the research is to synthesize and refine new terms on the basis of analysis of the existing terminology in the modern paradigm of the regulatory and methodological framework in terms of the regional policy of energy saving. The tasks of the research are: to define the main elements of the terminological system; identify the terms which definitions are absent from the terminological system, but used in the regulatory framework; carry out terminological analysis; link together the following terms: a subject of the Russian Federation, a region, state (regional government) energy saving and energy efficiency policy, a program related to energy saving and energy efficiency. In order to solve the tasks set, the authors’ of the study applied the methodology of terminological analysis with an emphasis on an analytical approach. The scientific novelty of the findings of the phase of the research is to expand and clarify the modern terminological system related to the development and implementation of regional energy efficiency programs. The authors introduced explicit definitions of «regional policy in the field of energy saving and energy efficiency», «a program in the field of energy saving and energy efficiency». The authors stressed the importance of using a unified terminology system in energy saving management, including at the regional level, as an opportunity to reduce the uncertainty and subjectivity in making appropriate managerial decisions.