BESS Cell and Module Supplier Risk Score Calculator

What this calculator does

• Score the supply chain risk for a BESS cell or module supplier by multiplying severity of supply disruption impact on production, frequency of quality or delivery issues, and effectiveness of incoming inspection and audit controls.
• Use it when ranking BESS cell or module suppliers in the supply chain risk register and you need a defensible supplier risk priority number to decide whether to qualify a second source or increase incoming inspection intensity.

Formula used

• Supplier risk priority number = severity of disruption x frequency of issues x detection effectiveness score
• Use the same scoring scale across all BESS suppliers in the supply chain risk register.

Inputs explained

• Severity of supply disruption impact on BESS production: Score the production days lost or project delay caused if this supplier fails to deliver on quality and schedule using the project risk scale.
• Frequency of supplier quality or delivery issues: Score based on supplier scorecard data including PPM defect rate, on-time delivery percentage, and incoming inspection rejection rate.
• Detection effectiveness of incoming inspection and audits: Score how reliably incoming inspection, supplier audits, and production monitoring catch cell or module quality issues before they reach rack assembly.

How to use the result

Common questions

• What incoming inspection tests are recommended for BESS battery modules? Recommended incoming inspection for BESS battery modules includes open-circuit voltage measurement and SoC verification, insulation resistance test between terminals and housing, dimensional check for rack fit, visual inspection for transport damage, and sample capacity test against the supplier certificate of conformance. For critical projects, 100 percent incoming cell voltage scan and 10 percent capacity test sampling is common.