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In the pursuit of sustainable energy solutions, off-grid hybrid systems have emerged as a promising avenue, catering to the electrification needs of rural areas. These systems encompass a multifaceted approach, addressing concerns of reliability, sustainability, and environmental preservation. Leveraging advanced tools such as HOMER modeling, the design and simulation of hybrid off-grid systems, alongside the evaluation of existing diesel generator (DG) power supply, have become imperative. This paper embarks on a comprehensive exploration with the overarching objective of designing, modeling, and simulating an off-grid power system tailored for the Shinshicho Primary Hospital. Nestled in the heart of Shinshicho Town within the Kembata Tembaro Zone of Ethiopia, this healthcare facility stands as a focal point for community well-being. The proposed hybrid system integrates solar PV, diesel generators, and battery storage, offering a robust and resilient energy solution. Throughout the optimization process, a primary load demand of 276 kilowatt-hours per day and a peak load of 40 kilowatts were pivotal considerations. The financial cost of this hybrid system results in an initial capital requirement of 160, 500, complemented by operational and maintenance costs amounting to 14, 824. Over the projected 20-year lifespan, the total net present cost (NPC) is estimated at 216, 155. With these economic parameters in mind, the cost-effectiveness of the selected hybrid system is underscored by a CEO (cost of energy) of 0. 187 dollars per kilowatt-hour. This metric not only highlights the economic viability of the proposed solution but also positions it as a sustainable and financially prudent choice for meeting the energy needs of Shinshicho Primary Hospital.
Salau et al. (Sat,) studied this question.