Design and Performance analysis of a stand-alone PV system at Dantsoho Hospital using PVsyt

Hassan Maharazu, Abubakar Muktar, Hamza Musa, Sanusi Haruna, Usman Bara’u Musa, Abubakar S. Ali

Abstract


Solar energy is rapidly emerging as a critical component of sustainable power systems, particularly in regions with unreliable grid infrastructure. In Nigeria, frequent power outages and escalating energy costs highlight the urgent need for dependable and autonomous energy solutions, especially for critical facilities such as hospitals where uninterrupted power supply is essential for life-saving operations and service continuity. This study presents a comprehensive design, simulation, and economic evaluation of a standalone photovoltaic (PV) system for the proposed Yusuf Dan Tsoho Memorial Hospital in Kaduna State, Nigeria. The system, with a nominal capacity of 73 kW, was designed using PVsyst software, incorporating detailed load assessment and optimal sizing of system components, including PV arrays, inverters, and battery storage. The integration of energy storage ensures continuous power availability, thereby enhancing system reliability and resilience against grid failures. The techno-economic analysis compares the standalone PV system with the conventional utility grid supply. Results indicate that the lifecycle cost of the PV system is estimated to be cheaper than the grid connection base. Despite the high initial capital investment, the standalone system demonstrates superior economic viability over time due to reduced operational costs and independence from grid instability.  The study underscores the effectiveness of standalone PV systems in delivering reliable, cost-effective, and uninterrupted power for healthcare facilities in developing regions. The proposed design provides a scalable and practical framework for deploying off-grid renewable energy systems in critical infrastructure, contributing to improved energy security and sustainability. 


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