The current study investigates the effects of thermal behaviors on PV panels, which are significantly influenced by their working temperature. To analyze the output of a selected PV panel model, it was initially simulated using PVsyst software under the weather conditions. However, one critical factor that homeowners should examine before investing in solar is the reliability and failure rates of solar panels. Estimating the cell temperature under service conditions is essential because the proportion of solar radiation that reaches a panel and is converted to electrical power is affected by the temperature of the PV cells. The "Plackett Burman Design" of trials is used to examine the relative importance of incident irradiance in hourly values (GlobInc) as a heat source on performance ratio (PR). Results generally indicates that higher temperatures reduce electrical efficiency, performance ratio (PR) has been employed as a measuring scale for the PV system performance. Panel temperature raises the risk for PV system efficiency and performance.