teguh dane, M.T. 2025. Analysis of Off Grid Solar Panel System Design on Floor 3 Lighting at Al-Azhar University Medan : Analisis Perancangan Sistem Panel Surya Off Grid pada Pencahayaan Lantai 3 Universitas Al-Azhar Medan. Indonesian Journal of Electrical Engineering and Renewable Energy (IJEERE). 5, 1 (Jun. 2025), 39-50.