Coffee, Tea, Roasting & Dry Goods Processing worked example

Energy Per Batch with roaster or dryer connected load of 19 kW: a worked example

This worked example runs the energy per batch numbers for a tougher week than the baseline: roaster or dryer connected load of 19 kW instead of the typical 38 kW. Estimate roasting or drying energy cost per finished pound from connected load, batch runtime, energy rate, and finished output.

The inputs for this scenario

  • Roaster or dryer connected load: 19 kW (the input this scenario stresses; the baseline uses 38)
  • Batch runtime: 0.42 hr (held at the documented default)
  • Blended energy rate: 0.16 $/kWh (held at the documented default)
  • Finished batch output: 84 lb (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total energy per batch = roaster or dryer connected load × batch runtime × blended energy rate.
  • Good output capacity works out to 0.01 $ / lb at these inputs, and this is the headline figure for the scenario.
  • Gross capacity works out to 7.98 $ / lb at these inputs.
  • Uptime loss works out to 7.97 $ / lb at these inputs.
  • Yield loss works out to 0 $ / lb at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where roaster or dryer connected load sits at 38 kW and the headline result is 0.02 $ / lb, this scenario comes in 50% below the baseline at 0.01 $ / lb.
  • Use it when costing a roast or drying profile, evaluating an efficiency upgrade, or comparing energy intensity across equipment and SKUs. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Good output capacity: 0.01 $ / lb (headline result)
  • Gross capacity: 7.98 $ / lb
  • Uptime loss: 7.97 $ / lb
  • Yield loss: 0 $ / lb

Run it with your numbers

  • To rerun this with your own numbers, open the live Energy Per Batch calculator, set roaster or dryer connected load to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.