Design and Tier-Based Analysis of an Off-Grid Solar PV System for Swarm Rural Electrification in Ethiopia. - Lidate, Abera Jote; Ancha, Venkata Ramayya; Worku, Getachew Biru; Behabtu, Henok Ayele; Yetayew, Tefera Terefe; Narra, Satyanarayana (Energies (19961073), 2026)