Starting in July 2025, VeraSol will begin requiring partner labs to test according to the new methods and tested products must comply with the revised requirements in IEC TS 62257-9-8.

The latest updates to IEC test methods and quality standards—IEC TS 62257-9-5:2024 and IEC TS 62257-9-8:2025—represent an important step forward in streamlining solar energy kit testing and the certification process. To help stakeholders understand and prepare for these changes, VeraSol hosted a webinar covering key technical and policy updates, implications for product certification, and what companies need to know for a smooth transition. VeraSol also shared guidance materials to help partners navigate the changes and adopt the new standards.

• Download the webinar presentation with information in both English and Chinese.
• Watch a recording of the webinar.
• Read about the transition on our website.
• Access a summary of changes to the test methods and quality standards.