How do you calculate a supplier shortage exposure score?

Multiply each sub-score by its weight and sum: impact x 0.40 + likelihood x 0.35 + visibility/recovery x 0.25. With scores of 9, 7, and 6, the result is 3.6 + 2.45 + 1.5 = 7.55.

Why is production impact weighted highest?

At 0.40, impact dominates because a part that halts charger assembly is more dangerous than one that is merely likely to be short. A high-impact, single-sourced power semiconductor outranks a commodity part with a higher shortage chance.

What is the visibility and recovery risk score?

It captures how blind you are to an emerging shortage and how slowly you could recover — no upstream visibility, no second source, long qualification lead times. At weight 0.25 it is the tiebreaker that elevates parts you cannot react to quickly.

What is a high exposure score?

On a 1-10 scale, the 7.55 example is firmly in the high-risk band warranting dual-sourcing or buffer stock. Mid-single-digit scores are watchlist items; low scores can be monitored passively. Set your own thresholds and keep them consistent.

How is this different from a standard FMEA RPN?

FMEA multiplies severity, occurrence, and detection equally; this tool weights them (40/35/25) to reflect that production stoppage matters most in charger manufacturing, and sums rather than multiplies for a smoother, more comparable scale.

How do I lower a component's exposure score?

Reduce impact by redesigning to a multi-source part, reduce likelihood by qualifying a second supplier, or reduce visibility/recovery risk by adding upstream telemetry and pre-qualifying alternates so recovery is fast.

EV Charging Infrastructure Manufacturing calculator

Supplier Shortage Exposure Calculator

The supplier shortage exposure score is a weighted risk index that ranks which EV charger components most threaten production if their supply is disrupted. Supply-chain and sourcing teams use it to triage scarce, allocated parts — power semiconductors, contactors, connectors, and payment modules — that have repeatedly bottlenecked charger manufacturing. By blending how badly a shortage stops the line (impact), how likely it is (likelihood), and how blind or slow you are to recover (visibility/recovery), it produces one comparable number across every component review. It is an FMEA-style prioritization tool tuned for the realities of EV charger BOMs.

What this calculator does

Score supplier shortage exposure for EV charger components from production impact, shortage likelihood, and visibility risk.
a procurement lead needs to prioritize EV charger component shortages
It combines production impact (40%), shortage likelihood (35%), and visibility/recovery risk (25%) into a single weighted exposure score on your chosen scale.

Formula used

Supplier shortage exposure score = production impact × 0.40 + shortage likelihood × 0.35 + visibility/recovery risk × 0.25
Use the same scoring scale across charger component shortage reviews.

Inputs explained

Production impact score:
Shortage likelihood score:
Visibility and recovery risk score:

How to use the result

Use it to rank components in a shortage review, prioritize dual-sourcing and buffer-stock investments, or build a watchlist of supply risks.
Scores are judgment-based; the index only ranks risks consistently if everyone uses the same scoring rubric across reviews and parts.

Current U.S. benchmarks

Global copper trades at $13,484 per tonne (IMF via FRED, May 2026), up 41.5% in a year, and U.S. industrial electricity averages 8.66 cents per kWh. Both feed electrified-hardware unit economics.

Common questions

How do you calculate a supplier shortage exposure score? Multiply each sub-score by its weight and sum: impact x 0.40 + likelihood x 0.35 + visibility/recovery x 0.25. With scores of 9, 7, and 6, the result is 3.6 + 2.45 + 1.5 = 7.55.
Why is production impact weighted highest? At 0.40, impact dominates because a part that halts charger assembly is more dangerous than one that is merely likely to be short. A high-impact, single-sourced power semiconductor outranks a commodity part with a higher shortage chance.
What is the visibility and recovery risk score? It captures how blind you are to an emerging shortage and how slowly you could recover — no upstream visibility, no second source, long qualification lead times. At weight 0.25 it is the tiebreaker that elevates parts you cannot react to quickly.
What is a high exposure score? On a 1-10 scale, the 7.55 example is firmly in the high-risk band warranting dual-sourcing or buffer stock. Mid-single-digit scores are watchlist items; low scores can be monitored passively. Set your own thresholds and keep them consistent.
How is this different from a standard FMEA RPN? FMEA multiplies severity, occurrence, and detection equally; this tool weights them (40/35/25) to reflect that production stoppage matters most in charger manufacturing, and sums rather than multiplies for a smoother, more comparable scale.

Last reviewed 2026-05-12.