District Energy & Thermal Network Equipment worked example

Pump Power Cost at 58% pump duty share included: a worked example

This worked example runs the pump power cost numbers for a tougher week than the baseline: 58% pump duty share included instead of the typical 80%. Estimate distribution pump electricity cost for chilled-water, hot-water, condenser-water, or district heating loops using pumped volume or network operating scope.

The inputs for this scenario

  • Pumped loop volume or duty units: 100 m³, kgal, or pump-hr (held at the documented default)
  • Pump energy cost per duty unit: 45 $ / unit (held at the documented default)
  • Pump duty share included: 58 % (the input this scenario stresses; the baseline uses 80)
  • Fixed demand or standby charge: 250 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Included variable pump power cost = pumped loop volume or duty units × pump energy cost per duty unit × pump duty share included.
  • Total pump power cost works out to 2,860 $ at these inputs, and this is the headline figure for the scenario.
  • Pump power cost per duty unit works out to 28.6 $ / piece at these inputs.
  • Included variable pump power cost works out to 2,610 $ at these inputs.
  • Fixed demand or standby charge works out to 250 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where pump duty share included sits at 80% and the headline result is 3,850 $, this scenario comes in 25.71% below the baseline at 2,860 $.
  • Use it when allocating distribution pumping cost for a billing period or comparing pumping cost per duty unit between loops or configurations. 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

  • Total pump power cost: 2,860 $ (headline result)
  • Pump power cost per duty unit: 28.6 $ / piece
  • Included variable pump power cost: 2,610 $
  • Fixed demand or standby charge: 250 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Pump Power Cost calculator, set pump duty share included to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.