Plant Utilities worked example

Air Compressor Utilization at 86% target loaded utilization: a worked example

What does the result look like when target loaded utilization reaches 86%? The full calculation is worked below with real intermediate numbers. Use it when reviewing air compressor utilization for a utility budget, maintenance priority, capacity check, energy project, or production support plan.

The inputs for this scenario

  • Loaded compressor hours: 510 hr (unchanged)
  • Available compressor hours: 720 hr (unchanged)
  • Target loaded utilization: 86 % (raised for this scenario; the documented default is 75)

Working through the calculation

  • Applying the documented formula (Air Compressor Utilization = loaded compressor hours ÷ available compressor hours × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 70.83 % for air compressor utilization rate, the number this scenario is built around.
  • At this operating point the engine returns 15.17 points for gap to target.
  • At this operating point the engine returns 510 value for measured load or hours.
  • At this operating point the engine returns 720 value for available capacity or hours.

How this compares with the baseline

  • Against the tool's baseline example, where target loaded utilization sits at 75% and the headline result is 70.83 %, this scenario lands almost exactly on the baseline at 70.83 %.
  • A figure at this level is achievable when target loaded utilization is genuinely sustained, not just peaked for a shift. Loaded hours do not equal efficient hours — a compressor can be 90% loaded yet still waste energy feeding leaks or artificially high header pressure, so pair this with a leak and pressure audit.

Results at a glance

  • Air Compressor Utilization rate: 70.83 % (headline result)
  • Gap to target: 15.17 points
  • Measured load or hours: 510 value
  • Available capacity or hours: 720 value

Run it with your numbers

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

Last reviewed 2026-05-12.