Renewable Energy, Solar & Wind Manufacturing worked example

Blade Defect Rate at 68% target defect rate: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop target defect rate to 68%, then walk the calculation through step by step. Estimate blade defect rate for renewable energy, solar and wind manufacturing using production-ready inputs so teams can track KPI performance and decide whether corrective action is needed.

The inputs for this scenario

  • Blades with defects: 8 count (held at the documented default)
  • Blades inspected: 250 count (held at the documented default)
  • Target defect rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Blade defect rate = blade defect rate count ÷ total blade defect rate population × 100.
  • Blade defect rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Blade defect rate gap to target works out to 64.8 points at these inputs.
  • Blade defect rate count works out to 8 count at these inputs.
  • Total blade defect rate population works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target defect rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to target defect rate, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It counts defective blades equally regardless of severity or reworkability, and the gap figure only subtracts target from actual, so read it in context rather than as a pass/fail switch.

Results at a glance

  • Blade defect rate: 3.2 % (headline result)
  • Blade defect rate gap to target: 64.8 points
  • Blade defect rate count: 8 count
  • Total blade defect rate population: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Blade Defect Rate calculator, set target defect rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.