Grid-Scale Battery Energy Storage Systems worked example

Supplier Risk Score with severity of supply disruption impact on bess production of 4.5 score: a worked example in grid-scale battery energy storage systems

Here is what the math looks like when conditions slip. We hold every other input steady and drop severity of supply disruption impact on bess production to 4.5 score, then walk the calculation through step by step. 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.

The inputs for this scenario

Severity of supply disruption impact on BESS production: 4.5 score (the input this scenario stresses; the baseline uses 9)
Frequency of supplier quality or delivery issues: 4 score (held at the documented default)
Detection effectiveness of incoming inspection and audits: 3 score (held at the documented default)

Working through the calculation

The calculation starts from the formula this tool documents: Supplier risk priority number = severity of disruption x frequency of issues x detection effectiveness score.
BESS supplier risk priority number works out to 3.95 score at these inputs, and this is the headline figure for the scenario.
Severity of supply disruption on BESS production works out to 4.5 score at these inputs.
Frequency of supplier quality or delivery issues works out to 4 score at these inputs.
Detection effectiveness of incoming inspection and audits works out to 3 score at these inputs.

How this compares with the baseline

Against the tool's baseline example, where severity of supply disruption impact on bess production sits at 9 score and the headline result is 5.75 score, this scenario comes in 31.3% below the baseline at 3.95 score.
The practical read: the gap between this scenario and the baseline is entirely attributable to severity of supply disruption impact on bess production, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It is an ordinal ranking, not a probability or financial exposure, and strong detection can mask a critical single-source supplier — always flag sole-source, high-severity vendors regardless of the total.

Results at a glance

BESS supplier risk priority number: 3.95 score (headline result)
Severity of supply disruption on BESS production: 4.5 score
Frequency of supplier quality or delivery issues: 4 score
Detection effectiveness of incoming inspection and audits: 3 score

Run it with your numbers

To rerun this with your own numbers, open the live Supplier Risk Score calculator, set severity of supply disruption impact on bess production to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.