This study presents an overview of sustainable and green cellular base stations (BSs), which account for most of the energy consumed in cellular networks. 118] proposed a hybrid PV/DG system design for a GSM BS. The HOMER simulation results show that 6 kW PV, 2 kW DG, and eight 200Ah batteries comp he world have still notshifted toward green cellular BS. For this research,we recommend further in-dept ommunications industry's energy us ic,energy. Department of Electrical Engineering, College of Electronics and Information Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea Author to whom correspondence should be addressed., uses the major part of the power utilized.