Autonomous multi-drone technology enables more frequent periodic and ad-hoc inspections, replacing traditional annual inspections. Annual inspections mean the average time to detect a fault is six months from the time it started. During that “blind” period, hotspots spread thermal stress to adjacent cells. String disconnections scale with seasonal irradiance. Soiling that could have been cleaned in an afternoon hardens into deposits that accelerate degradation. At portfolio scale, a two-week data lag across thousands of strings translates directly into lost energy production and reduced revenue.