The snowballing economic growth has reached the level where the energy industry has a crucial impact on the future pace of development. National energy security influences the adequate performance of all economic spheres and stable government processes. Systematization of the relevant scientific treatises showed that comprehensive national energy security assessment involves institutional, ecological, and behavioral determinants as crucial pillars of national energy security. Besides, the financial conditions play a pivotal role in ensuring national energy security since the undisturbed operations in the energy industry require investing in equipment modernization, implementing modern technologies and innovations, research and development, etc. Under the above mentioned, the scholars worldwide consider the financial determinants under elaborating on the improvements of national energy security. This study aims to interpret and visualize the bibliometric data of the scientific background related to exploring the role of financial determinants in national energy security. The bibliometric data for analysis were retrieved from the Scopus, and Web of Science interdisciplinary bibliographic databases. The collected data cover 770 publications indexed by the keywords: 'energy', 'security, and 'finance' in the titles, keywords, and abstracts of publications. The publication period covers 2000-2021. The VOSviewer software, Scopus and Web of Science toolkits for search results analysis were applied. The procedures of bibliographic analysis employed evaluative and relational techniques. The obtained results revealed publication activity's annual and relative growth rates, the main research directions by term co-occurrence, co-authorship, citation network, the most productive authors, journals, affiliations, and the geographical distribution of analyzed papers. The findings of this study give the theoretical contributions to the further development of the comprehensive assessment model of national energy security toward the carbon-free economy.