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Wind Turbine Betz Energy Output Calculator

P = ½·ρ·A·v³·Cp — wind power from rotor and wind speed.

Calculates wind turbine power output from rotor diameter, wind speed, air density, and power coefficient Cp (max Betz limit = 0.593).

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

P = 0.5 × ρ × π × r² × v³ × Cp (watts)

In depth

Calculates wind turbine power output from rotor diameter, wind speed, air density, and power coefficient Cp (max Betz limit = 0.593).