A Bibliometric Analysis of Geothermal Energy Utilization Research

Energy use is a key factor in tackling the climate crisis and advancing climate goals. Besides technological advancements for the effective and efficient use of energy resources, it is very important for scientific studies to support evolving technologies. Geothermal energy is a renewable and natural energy source that can be used directly or in the electricity generation in many regions of the world. This study presents a bibliometric analysis within the scope of "Geothermal Energy Utilization" (GEU). By determining the scientific development and bibliometric evaluation of the researched field, this study aims to identify the focal points of scientific studies and highlight development trends. By using VOSviewer, Bibliometrix (R), and Citespace software, an analysis was conducted on 7603 publications extracted from the Web of Science (WoS) Core Collection. The publications filtered according to the research topic were evaluated within the scope of publication number, country analysis, journal analysis, author analysis, keyword analysis and most influential publications analysis. According to the study results, the most productive country, journal and author were "China", "Geothermics" and "Ibrahim Dincer" respectively. According to the results of the thematic map analysis, the keywords "Organic Rankine cycle", "exergy" and "optimization" fall under the "motor" theme group.