5 Signs of Underperforming PV Modules
1.
Energy Production Drops
Comparing current system output to historical data can reveal subtle efficiency losses.
Even a 5% dip in performance can represent thousands of dollars in lost revenue each year.
2.
Thermal Hotspot Detection
Drone-based infrared inspections can reveal hot cells, cracked diodes, and degraded connections.
If left unchecked, hotspots accelerate module wear and long-term performance loss.
3.
Frequent Fault Codes
Inverters that repeatedly flag errors may indicate string-level underperformance or grounding issues.
Ignoring these codes can lead to extended downtime and reduced energy yield.
4.
Visible Module Defects
Cracks, delamination, corrosion, or discoloration often signal early-stage failure.
Regular visual inspections and preventive maintenance help catch damage before it spreads.
5.
Environmental & Infrastructure Issues
Site conditions such as vegetation encroachment, erosion, or shading can lower system output across entire arrays.
Routine land management and environmental monitoring help maintain safe, compliant operations.
