Pump, Compressor & Rotating Equipment Assembly worked example

Run-In Energy Cost at 58% share of run-in time under full load: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop share of run-in time under full load to 58%, then walk the calculation through step by step. Run-In Energy Cost captures what it costs in electricity and fixed overhead to break in and load-test a batch of pumps or compressors before shipment.

The inputs for this scenario

  • Units put through run-in test: 100 units (held at the documented default)
  • Energy cost per unit run-in cycle: 45 $ / unit (held at the documented default)
  • Share of run-in time under full load: 58 % (the input this scenario stresses; the baseline uses 80)
  • Fixed test-cell setup cost: 250 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Run-In Energy Cost cost = quantity × rate × capture factor + fixed cost.
  • Weighted cost works out to 2,860 $ at these inputs, and this is the headline figure for the scenario.
  • Per piece value works out to 28.6 $ / piece at these inputs.
  • Captured value works out to 2,610 $ at these inputs.
  • Fixed adjustment works out to 250 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where share of run-in time under full load sits at 80% and the headline result is 3,850 $, this scenario comes in 25.71% below the baseline at 2,860 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to share of run-in time under full load, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats the energy rate as flat — under time-of-use or demand tariffs the real bill can swing with when you run the cell.

Results at a glance

  • Weighted cost: 2,860 $ (headline result)
  • Per piece value: 28.6 $ / piece
  • Captured value: 2,610 $
  • Fixed adjustment: 250 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Run-In Energy Cost calculator, set share of run-in time under full load to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.