Key Data

• 50 manufacturers included in the Top Performers list (more than 300 models).
• 21 models demonstrated the highest reliability in all tests (TC, DH, MSS, HSS, PID, LID/LETID).
• 3 models (out of 21) showed the best results in PAN testing, which takes into account various operating conditions.

Negative Trends

Increasing failure rates:

• 83% of manufacturers experienced at least one failure (in 2024 – 66%).
• 59% of bills of materials (BOMs) failed at least one test (in 2024 – 41%).

Main causes of failures:

• Mechanical stress (MSS, HSS) – increasing failure rates.
• Additional defects: delamination, power degradation, distribution box failures.

Recommendations

For purchasers:

• Use the Kiwa PVEL Scorecard to assess the durability of modules.
• Consider the results of MSS/HSS tests when selecting equipment for regions with high wind/hail loads.

For manufacturers:

• Increase quality control of materials and module design.
• Optimize mechanical stability, especially for large-format panels.

Conclusion

The increase in the number of failures indicates the need for a balance between innovation and reliability. It is recommended to consider the data of independent tests to minimize risks during procurement.