<p>Solar-powered water irrigation systems have emerged as transformative, sustainable solutions for small-scale rural farming, offering low operational costs and reduced reliance on fossil fuels. However, their widespread adoption is constrained by challenges such as inconsistent solar power availability, system wear, and limited maintenance accessibility in remote areas. Enhancing the reliability and performance of these systems is critical to maximizing their potential for rural agricultural development. This study aim is to develop a copula-based framework for evaluating the reliability, availability, and profitability of solar photovoltaic irrigation systems. By leveraging a transition diagram, supplementary variable techniques, and Laplace transformation, the framework develops comprehensive expressions to quantify key reliability indices. To address the inherent vulnerabilities of remote applications, the model incorporates copula and general repair to address partial and complete failure, redundancy into essential subsystems, significantly enhancing system resilience and robustness. The effectiveness of the proposed approach is demonstrated through theoretical analysis and numerical simulations presented in tables and figures, which reveal critical factors influencing system performance and identify trade-offs between cost, redundancy, and efficiency. From the tables availability using copula repair is improved by 2.92% over general repair. The insights provided by this research offer actionable guidelines for designing and implementing sustainable, resilient solar-powered irrigation systems. By addressing reliability challenges, this work supports efforts to strengthen food security, promote rural development, and advance renewable energy adoption in agriculture.</p>