Energy & Sustainability worked example

Motor Efficiency Savings at 66% savings persistence rate: a worked example

Suppose savings persistence rate falls to 66%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate motor efficiency savings from annual kWh avoided, electricity value, savings capture, and project cost.

The inputs for this scenario

  • Annual electricity avoided: 185,000 kWh (held at the documented default)
  • Electricity value: 0.12 $ / kWh (held at the documented default)
  • Savings persistence rate: 66 % (the input this scenario stresses; the baseline uses 92)
  • Project implementation cost: 8,500 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Captured motor energy savings = annual electricity avoided × electricity value × savings persistence rate.
  • Net motor efficiency savings works out to 22,908 $ at these inputs, and this is the headline figure for the scenario.
  • Savings per avoided kWh works out to 0.12 $ / kWh at these inputs.
  • Captured motor energy savings works out to 14,408 $ at these inputs.
  • Project implementation cost works out to 8,500 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where savings persistence rate sits at 92% and the headline result is 28,584 $, this scenario comes in 19.86% below the baseline at 22,908 $.
  • It computes captured motor energy savings (avoided kWh times electricity value times persistence) and combines them with project cost to report net savings. 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

  • Net motor efficiency savings: 22,908 $ (headline result)
  • Savings per avoided kWh: 0.12 $ / kWh
  • Captured motor energy savings: 14,408 $
  • Project implementation cost: 8,500 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Motor Efficiency Savings calculator, set savings persistence rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.