12th Edition
The global solar industry’s trusted resource for PV module reliability and performance data. Powered by Kiwa PVEL’s Product Qualification Program (PQP).
The past year of PQP testing saw reduced power loss in multiple tests, higher energy yields and 43 manufacturers named as 2026 Top Performers. But the number of BOMs listed as Top Performers in all eight tests is extremely limited and the PQP failure rate has reached a new record high.
Top Performers
Manufacturers are listed as Top Performers
Model Types
BOMs are listed as Top Performers
All-Star
of manufacturers had at least one failure
Success Rate
of BOMs had at least one failure
In this 12th edition of the Scorecard, Kiwa PVEL is honored to once again showcase a broad range of Top Performer manufacturers and module model types. To earn Top Performer status, model types made from unique sets of bills of materials (BOMs) need to meet or exceed the stated criteria for that particular Product Qualification Program (PQP) test.
The 2026 Scorecard also includes a new Top Performer category for UVID, along with new Key Takeaways and Test Result Spotlights on each test page. These cover the industry’s most pressing reliability topics, including module breakage, UVID, and n-type reliability and performance. Given the increase in PQP failures, the Failures page and individual test pages have an increased focus on the issues being uncovered during PQP testing.
And for the first time, the Scorecard will be released twice per year, with an updated version scheduled for November 2026.
This year's scorecard highlights critical reliability trends, emerging failure modes, and the manufacturers setting the standard for PV module performance.
Nine manufacturers have at least one model type listed as a Top Performer in at least seven of eight tests. Eight manufacturers have a single model type listed as a Top Performer in all reliability tests (TC, DH, MSS, HSS, PID, UVID and LID+LETID). Seven manufacturers are first-time Top Performers. See the new Manufacturers page for more.
Across the 307 unique model types listed as Top Performers, only 21 achieved Top Performer status in all reliability tests (TC, DH, MSS, HSS, PID, UVID and LID+LETID). Of those, only three were Top Performers in all reliability tests and PAN performance. See the Top Performers page for more.
Degradation due to PID and UVID has been reduced, power loss following MSS and HSS continues to be minimal and the percentage of BOMs with <2% degradation increased for TC and DH. While PAN energy yields also continue to improve, the percentage of BOMs with <2% degradation decreased for LID+LETID and PQP failures are concerningly high.
The PQP failure rate has increased at both the manufacturer level and the BOM level. Module breakage during MSS and HSS was once again the leading failure type, but there was a huge increase in the frequency of delamination issues, with 45% of manufacturers having at least one delamination failure. See the Failures page for more.
Explore the Searchable Database
The online Scorecard’s searchable database allows users to filter Top Performers by manufacturer, PQP test, module design, power class and more. Search results can be exported in CSV format.
The Top Performers are also shown at the manufacturer level on the Manufacturers page.
Want to take the Scorecard offline?
Download the executive summary of the 2026 PV Module Reliability Scorecard. This PDF provides buyers with a quick reference to the list of top performing manufacturers and key takeaways from Kiwa PVEL’s PQP testing. You can also access past editions of the Scorecard to see previous Top Performers and findings.
Download The Summary
2026 SCORECARD PDF
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