Outdoor Power Equipment worked example

Seasonal Demand Planner at 99% seasonal line uptime: a worked example

What does the result look like when seasonal line uptime reaches 99%? The full calculation is worked below with real intermediate numbers. a planner needs the units a line can build across a spring or fall season to pre-build ahead of demand

The inputs for this scenario

  • Units built per day: 350 units / day (unchanged)
  • Available build days in season: 120 days (unchanged)
  • Seasonal line uptime: 99 % (raised for this scenario; the documented default is 88)
  • Build first-pass yield: 96 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross seasonal build = units built per day × available build days in season) to the inputs above produces each figure below.
  • At this operating point the engine returns 39,917 units for good units buildable in season, the number this scenario is built around.
  • At this operating point the engine returns 42,000 units for gross seasonal build.
  • At this operating point the engine returns 420 units for seasonal downtime loss.
  • At this operating point the engine returns 1,663 units for seasonal yield loss.

How this compares with the baseline

  • Against the tool's baseline example, where seasonal line uptime sits at 88% and the headline result is 35,482 units, this scenario comes in 12.5% above the baseline at 39,917 units.
  • A figure at this level is achievable when seasonal line uptime is genuinely sustained, not just peaked for a shift. It assumes a constant daily rate, uptime, and yield across the whole season; real ramp curves, summer heat downtime, and material shortages can pull the realized number below the projection.

Results at a glance

  • Good units buildable in season: 39,917 units (headline result)
  • Gross seasonal build: 42,000 units
  • Seasonal downtime loss: 420 units
  • Seasonal yield loss: 1,663 units

Run it with your numbers

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

Last reviewed 2026-05-12.