Seeking Stakeholder Feedback: Proposed Changes to IEC TS 62257-9-5 and IEC TS 62257-9-8

To simplify the certification process and address recent changes in the market, VeraSol is preparing a list of proposed changes to the test methods and standards for off-grid solar energy kits, including pico-PV products and solar home system kits up to 350 Wp. We anticipate submitting the proposed changes to the International Electrotechnical Commission (IEC) for review in early 2023 and are reaching out to collect your feedback in advance of this submission.

We are proposing two key structural changes:

  1. Reduce the sample size from n=6 (pico-PV products) or n=4 (SHS kits) to n=2 for QTM testing of all products, retaining the existing sample size (n=2) for renewal and market check tests.
  2. Reduce the truth-in-advertising tolerance from 15% to 10%.

We believe these changes are justified given the substantial reduction in variability of test results in recent years and expect the reduction of the sample size to simplify the testing process and potentially reduce both in-kind and actual testing costs. In addition to these two significant changes, we request feedback on approximately 20 other proposed changes and would value insight from our broad range of stakeholders.

We invite you to provide feedback by reviewing the list of proposed changes in the stakeholder document and then submitting your comments via this form by 28 February 2023.

Your feedback is valuable to us. The insights we receive will help ensure that the updated documents identify quality products, protect the end user, and best meet the needs of all sector stakeholders.