Energy & Sustainability worked example

Energy Cost per Part with average equipment demand of 75 kW: a worked example

Suppose average equipment demand falls to 75 kW. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate electricity cost per manufactured part from equipment kW, operating hours, blended utility rate, and units produced.

The inputs for this scenario

  • Average equipment demand: 75 kW (the input this scenario stresses; the baseline uses 150)
  • Operating runtime: 8 hr (held at the documented default)
  • Blended electricity rate: 0.12 $ / kWh (held at the documented default)
  • Good units produced: 5,000 units (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Electricity used = average equipment demand × operating runtime.
  • Total electricity cost works out to 72 $ at these inputs, and this is the headline figure for the scenario.
  • Electricity used works out to 600 kWh at these inputs.
  • Energy cost per good unit works out to 0.01 $ / unit at these inputs.
  • Electricity cost per operating hour works out to 9 $ / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where average equipment demand sits at 150 kW and the headline result is 144 $, this scenario comes in 50% below the baseline at 72 $.
  • It computes the electricity cost carried by each good unit by multiplying equipment demand by runtime, costing that energy at your blended rate, and dividing by good output. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total electricity cost: 72 $ (headline result)
  • Electricity used: 600 kWh
  • Energy cost per good unit: 0.01 $ / unit
  • Electricity cost per operating hour: 9 $ / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Energy Cost per Part calculator, set average equipment demand to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.