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ABSTRACT
The main objective of this paper is to analyze the level of Carbon dioxide (CO2) emission. This study was conducted at a hypothetical primary health care in Sokoto state, Nigeria. The study compared the electrification of the clinic between a PV/diesel hybrid system and a diesel-only system. The proposed hybrid system is evaluated using HOMER (Hybrid Optimization Model for Electrical Renewable) software to optimize renewable-based hybrid systems to determine the most economical system configuration in terms of cost, renewable energy contribution, and greenhouse gas emissions. HOMER simulates the operation of a system by making energy balance calculations for each of the 8,760 hours in a year. For each hour, HOMER compares the electric and thermal demand in the hour to the energy that the system can supply and calculates the flow of energy from each system component. Twenty years of solar radiation data (2000 to 2020) was obtained from NIMET (Nigerian meteorological agency) and analyzed using the software. Also, the cost of components was taken from the online site of manufacturing and equipment suppliers (solar wholesalers). The results show that solar energy contributed 70% while diesel generators contributed 30% to the hybrid system. While for the Generator system, only the same load and project lifetime, the net present cost (NPC), cost of operation (CO) & levelised cost of energy (LCOE) of the generator only are double the hybrid system. The Diesel consumption and CO2 emissions of the generator are also four (4) times the hybrid system.
Keywords: Photovoltaic (PV), Generator, Hybrid system, Homer, CO2 emission,
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