Microgrid & Distributed Energy Equipment worked example

Commissioning Risk with commissioning fault severity of 15 score: a worked example

What does the result look like when commissioning fault severity reaches 15 score? The full calculation is worked below with real intermediate numbers. Use it when commissioning risk on a microgrid and distributed energy project needs a defensible ranking before energization or islanding tests.

The inputs for this scenario

  • Commissioning fault severity (1-10): 15 score (raised for this scenario; the documented default is 6)
  • Likelihood of fault during energization (1-10): 4 score (unchanged)
  • Pre-energization detection capability (1-10): 3 score (unchanged)

Working through the calculation

  • Applying the documented formula (Commissioning risk score = commissioning fault severity × fault likelihood × pre-energization detection) to the inputs above produces each figure below.
  • At this operating point the engine returns 8.15 score for commissioning risk score, the number this scenario is built around.
  • At this operating point the engine returns 15 score for commissioning fault severity.
  • At this operating point the engine returns 4 score for fault likelihood.
  • At this operating point the engine returns 3 score for pre-energization detection.

How this compares with the baseline

  • Against the tool's baseline example, where commissioning fault severity sits at 6 score and the headline result is 4.55 score, this scenario comes in 79.12% above the baseline at 8.15 score.
  • A figure at this level is achievable when commissioning fault severity is genuinely sustained, not just peaked for a shift. The score is only as consistent as your scoring rubric; a 6x4x3 from one engineer must mean the same thing as another's, or the ranking is noise rather than risk.

Results at a glance

  • Commissioning risk score: 8.15 score (headline result)
  • Commissioning fault severity: 15 score
  • Fault likelihood: 4 score
  • Pre-energization detection: 3 score

Run it with your numbers

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

Last reviewed 2026-05-12.