Feasibility Analysis Of Hybrid Microgrid System For The Electrification Of Educational Institutions (A Case Study Of The Western Region Of Ghana)

Abstract

This study presents a feasibility study of hybrid microgrid system for the electrification of educational institution in the Western Region of Ghana. The technical, economic and enviromental analysis of the hybrid microgrid system was analysed based on the use of HOMER software. Several options of hybrid microgrid power supply systems were evaluated based on the one which had the lowest net present cost (NPC), cost of energy (COE) and emissions. The hybrid microgrid system (PV/Grid) emerged as the most viable option, displaying a significantly low levelized cost of electricity (COE) at $0.0320 and the lowest net present cost (NPC) of $18,332. This system also incurred the second-lowest operating cost ($9,300) among the hybrid microgrid options. Furthermore, the PV/Grid system exhibited a substantial renewable fraction of 55.2%, outperforming other hybrid options. In comparison to the national grid, where the commercial electricity cost is approximately $0.057/kWh, the PV/Grid hybrid microgrid system proves to be a more economical alternative. The hybrid microgrid (PV/Grid) system successfully purchases 57,102 kWh of electrical energy from the grid, generates 78,100 kWh from renewable sources, and sells surplus energy amounting to 23,002 kWh back to the grid. Notably, the CO2 emissions associated with the educational institution's assigned load are 36,088 g/kWh, demonstrating its environmental friendliness when compared to the national grid. Furthermore, the study conducts sensitivity analysis, indicating a clear relationship between an increase in grid power pricing and a rise in both NPC and COE. This finding underscores the importance of strategic planning and policy interventions in minimizing the financial challenges posed by rising energy costs, ensuring the long-term sustainability of hybrid microgrid systems in educational institution.