Estimate how much production energy and energy cost are tied to rejected output. The calculator allocates average process energy across all produced units, then attributes that average share to rejects. It also shows saleable yield and the extra gross output needed to replace the loss. This is a planning estimate, not a substitute for submetered scrap-process data.
The main result estimates embedded process energy associated with rejects using an average-per-unit allocation.
Defects found early may embody less energy than finished rejects; use stage-level metering when available.
At 10,000 total units, 250 rejects, 15,000 kWh, and $0.14/kWh, the reject rate is 2.5%. Allocated energy loss is 375 kWh, costing $52.50.
The calculator applies the reject share of output to total process energy.
Not separately. Add rework energy to total process energy or measure it as its own process.
Use submetered or stage-weighted data; the average allocation here will understate that difference.
Replacement production is also subject to the entered yield, so more starts may be needed.
Yes. Energy loss still calculates, while estimated cost loss becomes zero.
| Item | How it is used |
|---|---|
| Good-unit yield | Calculator input in the displayed unit |
| Allocated energy loss | Calculator input in the displayed unit |
| Estimated energy cost loss | Calculator input in the displayed unit |
| Replacement gross units | Calculator input in the displayed unit |