Energy & Sustainability worked example

ISO 50001 Savings at 98% savings capture share achieved: a worked example

What does the result look like when savings capture share achieved reaches 98%? The full calculation is worked below with real intermediate numbers. an energy manager or ESG lead needs to estimate savings from an energy management system

The inputs for this scenario

  • Managed annual energy spend: 2,400,000 $ (unchanged)
  • Expected savings rate per dollar managed: 0.05 $ / $ managed (unchanged)
  • Savings capture share achieved: 98 % (raised for this scenario; the documented default is 85)
  • Annual EnMS program cost: 42,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Captured ISO 50001 savings = managed annual energy spend × expected savings rate × savings capture share) to the inputs above produces each figure below.
  • At this operating point the engine returns 147,840 $ for net iso 50001 savings, the number this scenario is built around.
  • At this operating point the engine returns 0.06 $ / $ managed for savings per managed energy dollar.
  • At this operating point the engine returns 105,840 $ for captured energy management savings.
  • At this operating point the engine returns 42,000 $ for annual iso 50001 program cost.

How this compares with the baseline

  • Against the tool's baseline example, where savings capture share achieved sits at 85% and the headline result is 133,800 $, this scenario comes in 10.49% above the baseline at 147,840 $.
  • A figure at this level is achievable when savings capture share achieved is genuinely sustained, not just peaked for a shift. Captured savings are a planning estimate based on an assumed savings rate and capture share; actual verified savings require metered, weather- and production-normalized measurement under an M&V protocol like IPMVP.

Results at a glance

  • Net ISO 50001 savings: 147,840 $ (headline result)
  • Savings per managed energy dollar: 0.06 $ / $ managed
  • Captured energy management savings: 105,840 $
  • Annual ISO 50001 program cost: 42,000 $

Run it with your numbers

  • Every input above is editable in the live ISO 50001 Savings calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.