Understanding PID in Solar Panels
Causes, Effects, and How to Prevent It
By Whitematter Energy Solutions – Best Solar Panel Dealer in Ludhiana Punjab
As the demand for solar energy continues to grow, ensuring the long-term performance and reliability of solar power plants has become more critical than ever. One lesser-known but serious issue affecting solar systems worldwide is PID — Potential Induced Degradation.
At Whitematter Energy Solutions, recognized as the best solar panel dealer in Ludhiana Punjab, we believe that awareness and correct system design are key to protecting your solar investment.
In this blog, we explain what PID is, its root causes, how it impacts system performance, and how to prevent and fix it effectively.
What is PID (Potential Induced Degradation)?
PID is a performance degradation phenomenon that occurs due to voltage potential differences between the solar cell and the module frame or grounded parts of the system.
Over time, this voltage difference leads to:
Leakage currents
Ion migration inside the module
Reduced power output
In severe cases, permanent damage to solar cells
Causes of PID in Solar Systems
PID develops due to a mix of electrical, environmental, and material factors.
High System Voltage (1000V / 1500V)
Higher operating voltages increase potential differences across cells, raising PID risk.
Poor Module Quality or Encapsulation
Low-quality EVA or insulation allows sodium ions (Na⁺) to migrate into cells.
High Temperature and Humidity
Common in Punjab’s climate, these conditions accelerate PID formation.
Negative Potential Grounding
Incorrect grounding configurations make modules more vulnerable.
Improper Earthing or Moisture Ingress
Leakage paths caused by poor installation promote PID.
Effects of PID on Solar Plant Performance
PID can severely affect both generation and profitability.
30–80% power loss in affected modules
Mismatch losses across strings
Lower plant efficiency
Delayed ROI and warranty complications
This is why choosing the best solar panel dealer in Ludhiana Punjab is crucial for correct system design and long-term safety.
Financial Impact of PID on Customers
For a 100 kW on-grid solar plant:
10% PID loss = 15,000 units/year
At ₹7 per unit = ₹1,05,000 annual loss
For commercial and industrial plants, PID can cause lakhs of rupees in recurring losses if not addressed early.
Remedies for Existing PID Issues
If PID has already occurred, recovery is still possible.
PID recovery devices for voltage reversal
System polarity correction
Replacement of severely degraded modules
Professional O&M and IV curve testing
At Whitematter Energy Solutions, we provide expert PID diagnostics and recovery services as the best solar panel dealer in Ludhiana Punjab.
How to Prevent PID in Solar Installations
Use PID-Resistant Solar Panels
Choose IEC 62804 certified modules from trusted brands like Waaree, Adani, and Trina.
Correct Grounding & Earthing
Avoid negative grounding in high-voltage systems.
High-Quality Inverters & Components
Premium inverters offer built-in PID protection.
Regular Maintenance & Monitoring
Keep systems dry, clean, and continuously monitored.
Professional Installation
Working with the best solar panel dealer in Ludhiana Punjab ensures correct design from day one.
Conclusion
PID is a silent performance killer, but with proper planning, quality equipment, and expert installation, it can be completely avoided.
At Whitematter Energy Solutions, we specialize in PID-resistant system design, advanced monitoring, and long-term performance assurance—making us the best solar panel dealer in Ludhiana Punjab for residential, commercial, and industrial projects.
Need Expert Solar Guidance?
Get a free solar performance assessment or O&M consultation today.
Call: +91 99884 32432
Website: www.whitematter.in
Address: 1197/2, Jaimal Singh Road, Janta Nagar, Ludhiana, Punja