Product Qualification Program (PQP)

Kiwa PVEL’s Product Qualification Program (PQP) is a key tool for mitigating PV module procurement risk by transforming industry-leading bankability testing into procurement intelligence. Learn more about our PQP methodology, PQP test details and procedures, and case studies from the lab and the field here.

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PVEL Product Qualification Program (PQP)

Overview
The PVEL Scorecard rankings are based on results from the Product Qualification Program (PQP), a rigorous and comprehensive testing protocol launched in 2012. The PQP was created with two main goals:

  • To provide solar project developers, investors, and asset owners with independent, consistent data on reliability and performance for effective supplier management.

  • To offer manufacturers independent recognition for surpassing industry standards in product quality and durability.

Today, the PQP is a key part of risk mitigation for global procurement processes. Reports are freely available to downstream stakeholders.

Core Principles of the PVEL PQP

PQP is a structured and consistent testing sequence, uniquely designed to support downstream solar equipment buyers, investors, and asset managers. It enables objective supplier assessments and thorough technical due diligence. The program follows four core principles:

  1. Empirical Data: PQP replaces assumptions with real-world performance data, helping to optimize revenue and energy yield models.

  2. Randomized Sampling: All submitted BOMs (Bills of Materials) are witnessed during production, sealed, and verified by PVEL auditors on-site.

  3. Annual Updates: PQP is updated yearly to stay aligned with emerging technologies and evolving manufacturing trends.

  4. Standardized Testing: All BOMs are tested using the same methods, calibrated equipment, and consistent environmental conditions.

Buyers can reference PQP-approved BOMs in supply contracts to ensure delivery of high-performing components. PVEL also provides detailed BOM documentation free of charge for inclusion in procurement agreements.

Factory Witness Testing: BOM-Level Validation

To verify PV module BOMs, PVEL auditors perform an 8-step factory witness testing process:

    Conduct a comprehensive factory process audit.

    Observe and document over 100 technical details of the BOM.

    Collect samples of backsheets, encapsulants, and connectors for testing and inventory.

    Sign each module and seal pallets with tamper-proof tape.

    Photograph BOM components directly from original packaging.

    Track every production step of each BOM element.

    Record soldering and lamination recipes.

    Ship sealed pallets directly to PVEL for PQP testing.