Safety

Quality Assessments Of BESS Systems A meta-analysis of quality audits of 320 BESS units in five countries reveals that when compared to cell- or module-level defects, system-level defects are the most likely to lead to high-severity failures and are the most common type of quality risks in BESS systems accounting 72% of quality issues.

Outer rings in the diagram indicate individual categories of the main risks. System defects from improper integration procedures account for the majority of system-level quality issues.

Cell defects 15%

Granular Categorization of Quality Risks

Module defects 13% System defects 72%

Source: Clean Energy Report Note: Report used data up to December 2023 Figures shown in slide were reproduced using data provided by authors, which takes into account compiled quality audit data until November 2024.]

Extracted from the PDF; charts and images may read imperfectly.