Solar thermal inspections are increasingly revealing rare and unusual thermal signatures-such as unique heating patterns in bifacial and half-cut modules, or dark material-concern patches-that deviate from standard issues. These anomalies have critical, undocumented implications for system performance and reliability, requiring solar professionals to understand and address them to protect yield and warranties.
Karthik Mekala
CMO
Published on
Thermal inspections have become a standard tool in solar construction and O&M. Most scans reveal familiar patterns — hotspots, string outages, or wiring issues. But every so often, we see something different.
In recent projects, our scans have captured rare thermal signatures that defy standard categorization but carry important implications for system performance and long-term reliability. These include:
Unusual heating patterns on bifacial modules in certain site conditions
Dark patches that indicate hidden material concerns
Signature behaviors unique to half-cut modules under shading
These anomalies are seldom documented in industry guides, but they can impact yield, safety, and warranty considerations if left undetected.
We’ve put together a detailed breakdown of these cases - including how they arise, what they look like, and why they matter. To access it, please click here.
We’re sharing the full details with solar developers, EPCs, and O&M teams who want to better understand and address these rare issues in their projects.
These anomalies are seldom documented in industry guides, but they can impact yield, safety, and warranty considerations if left undetected.
Karthik Mekala
CMO
