The feasibility of economic viability of hybrid PV-diesel energy system connect with the main grid in Somalia

Author(s): Yonis Khalif Elmi, Moein Jazayeri , Diaa Salman
Department of Electrical and Electronic Engineering, Cyprus International University, Nicosia, Northern Cyprus, Mersin 10, Turkey
International Journal of Smart Grid and Clean Energy, vol. 11, no. 2, April 2022: pp. 83-91
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.11.2.83-91

Abstract: Somalia has abundant resources in renewable energy; however, more than 90% of the electricity uses diesel, which is imported from outside the country and causes temperature rise and high electricity prices. This study examined the feasibility of several hybrid systems in Somalia's capital city, including solar Photovoltaic (PV), Battery Storage (BS), Diesel Generators (DG) and the main grid systems to minimize the levelized Cost of Energy (COE), Net Present Costs (NPC) and environmental impacts. Nine different system configurations were investigated, including stand-alone DG, stand-alone main grid system, Hybrid PV-DG with and without BS that connected to the main grid, Hybrid PV-DG with and without BS without connecting the main grid, Hybrid PV-Grid with and without BS system, and finally Hybrid DG-Grid system. Furthermore, the Hybrid Optimization Model for Electric Renewables (HOMER) is applied to optimize and analyze sensitivity. The result found that hybrid PV-DG-grid without battery storage system is the cheapest system in terms of NPC ($ 7.86M), COE (0.154 $/kWh), operating cost (339,775 $/yr), and renewable energy fraction of 24.6%.

Keywords: Renewable energy, economic, viability, hybrid system
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