EcoTrack

Wind Turbine Power Calculator

How much power does the wind actually deliver?

Wind speed matters far more than anything else

Power scales with the cube of wind speed — doubling wind speed increases available power eightfold, which is why turbine siting (finding consistently windy locations) matters more than almost any other design choice.

Betz's limit caps real-world efficiency

No turbine can capture more than about 59.3% of the wind's kinetic energy (the Betz limit) — real turbines typically achieve 35-45% efficiency (Cp), which this calculator lets you set directly.

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EcoTrack

Wind Turbine Power Calculator

How much power does the wind actually deliver?

Air density (kg/m³)

Swept area (m²)

Wind speed (m/s)

Turbine efficiency (Cp)

Power output

548,800 W

What you entered

Air density (kg/m³): 1.225Swept area (m²): 5000Wind speed (m/s): 8Turbine efficiency (Cp): 0.35

1
v³ (wind speed cubed)
8³= 512
2
P = ½ρAv³Cp
0.5 × 1.225 × 5000 × 512 × 0.35= 548800 W

Result

Power output: 548,800 W

At this wind speed, the turbine generates about 548.8 kW.

Wind speed matters far more than anything else

Betz's limit caps real-world efficiency

No turbine can capture more than about 59.3% of the wind's kinetic energy (the Betz limit) — real turbines typically achieve 35-45% efficiency (Cp), which this calculator lets you set directly.