Bibliometric Analysis of Renewable Energy Strategies for Mitigating the Impact of Severe Droughts on Electrical Systems

The global energy transition is pivotal in mitigating climate change. In Chile, the energy system that includes hydropower faces challenges from prolonged megadroughts, necessitating diversification toward renewable energy sources like solar and wind energy. However, research gaps persist in understanding how these sources can optimally address climate-induced vulnerabilities. This study conducts a bibliometric analysis to identify global research trends on renewable energy strategies under extreme drought conditions, distinguishing it from systematic or narrative reviews. A bibliometric analysis was conducted using Scopus, incorporating 82 selected documents analyzed via Bibliometrix and VOSviewer to map co-authorship networks, keywords, and publications. Results revealed a significant increase in research on solar energy (26.83%) and renewable energy (25.61%) within the study period (2005–2024), with the most notable growth occurring in the last six years. Key findings include the predominance of studies on energy optimization, with solar and wind technologies emerging as pivotal for enhancing resilience in water-scarce regions. These insights underscore the strategic role of renewable energies in addressing climate vulnerabilities while supporting sustainable energy transitions. The implications of this work lie in guiding future research and policy frameworks to enhance energy security and environmental sustainability.