AUTHOR=Alemu Anshebo Getachew , Anshebo Teketel Alemu , Dessie Bizuayehu Bogale TITLE=Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia JOURNAL=Frontiers in Energy Research VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2025.1478555 DOI=10.3389/fenrg.2025.1478555 ISSN=2296-598X