Microgrid & Distributed Energy Equipment worked example

Commissioning Risk with commissioning fault severity of 3 score: a worked example

This worked example runs the commissioning risk numbers for a tougher week than the baseline: commissioning fault severity of 3 score instead of the typical 6 score. Score and rank commissioning risk on microgrid and distributed energy projects, so teams can decide which energization, protection, or controls step needs more checks before going live.

The inputs for this scenario

  • Commissioning fault severity (1-10): 3 score (the input this scenario stresses; the baseline uses 6)
  • Likelihood of fault during energization (1-10): 4 score (held at the documented default)
  • Pre-energization detection capability (1-10): 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Commissioning risk score = commissioning fault severity × fault likelihood × pre-energization detection.
  • Commissioning risk score works out to 3.35 score at these inputs, and this is the headline figure for the scenario.
  • Commissioning fault severity works out to 3 score at these inputs.
  • Fault likelihood works out to 4 score at these inputs.
  • Pre-energization detection works out to 3 score at these inputs.

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 26.37% below the baseline at 3.35 score.
  • Use it during the commissioning readiness review for each DER asset or breaker before first energization, and again after any wiring or settings change. 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

  • Commissioning risk score: 3.35 score (headline result)
  • Commissioning fault severity: 3 score
  • Fault likelihood: 4 score
  • Pre-energization detection: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Commissioning Risk calculator, set commissioning fault severity to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.