The primary aim of this study is to serve to analyze the consequences of component failure rates and the role of preventive maintenance on the overall reliability of hybrid solar panel systems. The linear differential equation technique is used to analyze various reliability measures and predict system performance by comparing the effects of preventive maintenance both theoretically and graphically.  The research provides a clearer understanding of how these measures can extend system life and enhance efficiency. The study evaluates the impact of preventive maintenance on overall system efficiency, cost savings, and sustainability. The findings indicate that a well-maintained hybrid solar system can significantly enhance energy reliability, reduce operational expenses, and improve the payback period.