Feasibility Analysis and Techno-Economic Study for Green Energy System Connected to Unhealthy Grid

Abstract

In regions plagued by unreliable grid infrastructure, optimization of hybrid renewable systems is paramount to ensure consistent power supply. This study focuses on sizing a hybrid green energy system (HGES) for a hospital in Egypt facing unhealthy utility, with a daily average load demand of 8809 kWh. Utilizing HOMER Pro software, the study simulates various configurations of photovoltaic arrays, wind turbines, battery storage, and power converters to identify an optimal setup that meets the hospital’s energy requirements while mitigating the impact of unscheduled power outages. The analysis considers the hospital’s specific load profile and potential grid outages, optimizing the system for maximum efficiency and reliability. The outcomes of the emulation illustrate that the optimal hybrid system achieves a noteworthy cost of energy (COE) at around $0.0429 per kilowatt-hour. Additionally, the system displays a net present cost of $3.76 million. These findings reveal that integrating PV and wind generation with adequate battery storage and efficient converters can significantly improve the hospital’s energy independence and reduce CO2 emissions. The economic assessment within HOMER Pro indicates that the chosen configuration not only ensures a stable power supply but also achieves the lowest net present cost (NPC) and cost of energy (COE), demonstrating the practical benefits of renewable resources integrating in cases affected by frequent power interruptions.