Techno-economic analysis of solar photovoltaic system for agricultural pumping irrigation at national root crop research institute, Abia State, Nigeria
Résumé
This research presents an economic analysis of a 24 kW Solar Photo-voltaic (PV) system tailored for sustainable agricultural irrigation. The proposed system comprises 60 high-efficiency solar panels rated at 400 W each, a modular inverter configuration for power conversion, and supporting infrastructure, including mounting structures, piping, and control systems. The system meets a daily energy demand of 60.29 kWh, with operational parameters including 10 hours of daily use and 300 days of annual operation. The economic analysis evaluates capital and operational expenditures, highlighting the long-term cost advantages of the solar PV system over diesel-powered alternatives. The capital cost of the solar system is ₦13,900,000, including ₦6,600,000 for panels, ₦3,000,000 for a modular inverter setup, and other associated infrastructure costs. The Levelized Cost of Energy (LCOE ₦16.57/kWh) and Net Present Value (NPV ₦158,000,000) analyses underscore the system's economic feasibility, with a payback period of approximately 7.2 years. Environmental impact analysis reveals significant carbon savings, with the PV system producing only 48,000 kg of CO₂ emissions over its lifetime compared to 201,000 kg from a diesel system, reducing the environmental burden by over 76%. This study demonstrates that the solar PV irrigation system offers a sustainable solution by reducing energy costs, mitigating carbon emissions, and enhancing agricultural productivity. Recommendations focus on quality installation, scheduled maintenance, and provisions for scalability to adapt to future energy demands, ensuring the system's reliability and alignment with sustainability goals over its 25-year lifespan.
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