Global trends in solar latent thermal energy storage research (1975–2023)

Arun Kumar Sharma, Prashant Sharma, Bhupendra Gupta, Anil Kumar and Prashant Baredar

Renewable and Sustainable Energy Reviews, 2025, vol. 212, issue C

Abstract: Solar thermal energy storage systems are crucial for addressing global renewable energy challenges and promoting sustainable development. Despite significant research and technological advancements in enhancing solar collectors and thermal energy storage efficiency, a comprehensive bibliometric analysis has been lacking. This review analyses 925 STES research articles considering latent heat storage and solar collectors published between 1975 and 2023 in the Web of Science, Scopus, and Dimensions databases using VOSviewer and Microsoft Excel. The study identifies three developmental stages in solar thermal energy storage research. Among the 435 filtered publications, India is the most prolific country, reflecting a growing interest in this field. The review identifies four major research clusters and highlights the most productive studies, organizations, and key literature. Current trends and future directions in STES research are explored, including solar energy storage, heating equipment, energy utilisation, phase change materials, nanofluids, environmental impact, performance assessment, and efficiency improvements. This bibliometric review aligns with the United Nations Sustainable Development Goals (SDGs), particularly SDG 7 (Affordable and Clean Energy) and SDG 13 (Climate Action), by promoting innovative solutions for sustainable energy systems and climate resilience. It provides valuable insights for scientists, industrialists, and policymakers to advance their work and develop robust energy policies for security and sustainability.

Keywords: Solar thermal energy; Latent thermal energy storage; Bibliometric phase change materials; Research trends (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.rser.2025.115409

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