Photovoltaic (PV) technology is a cornerstone of the global transition to sustainable energy, playing a crucial role in environmental management, economic stability, and technological advancement. Efficient monitoring of large-scale PV installations is essential to maximize energy output and ensure long-term performance. This study explores the application of airborne thermal sensing to assess the operational efficiency of a 20-megawatt solar power plant in the Campania region of southern Italy. The facility, comprising 81,576 solar modules distributed across 13 hectares, was systematically surveyed using high-resolution thermal imaging to detect potential inefficiencies, such as overheating and malfunctioning cells. The integration of aerial thermal monitoring presents a sophisticated and highly effective approach for real-time diagnostics, allowing for the early identification of anomalies that could impact system performance. This method not only enhances maintenance strategies by enabling prompt interventions but also optimizes energy production by minimizing operational losses. The findings underscore the importance of advanced monitoring techniques in sustaining the efficiency of large-scale PV systems, particularly in regions where solar energy is pivotal for clean energy transitions. As the deployment of solar farms continues to expand globally, adopting innovative monitoring technologies becomes increasingly essential for ensuring their reliability, durability, and overall effectiveness.