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Calcimator

Tower Height Optimization Calculator

Calculate wind speed and power increase from a taller tower.

Inputs

m/s
ft
ft
ft
%

Results

Wind Speed at Hub

8.03 m/s

Power Increase

139.5%

Power at Target Height637.1 kW
Power at Ref Height266 kW
Additional Annual kWh3,250,534 kWh
How to Use This Calculator
  1. Enter the measured wind speed at the reference height.
  2. Set the reference height and the proposed tower hub height.
  3. Input the Hellmann exponent (roughness coefficient) for your terrain type.
  4. Review the estimated wind speed at hub height and the improvement factor.
  5. Taller towers consistently deliver better economics — optimize within structural and permitting constraints.

How the result changes with Reference Wind Speed

Reference Wind SpeedWind Speed at HubPower Increase
2.93.88 m/s139.5%
7.6510.24 m/s139.5%
1317.39 m/s139.5%
1824.08 m/s139.5%

What each input means

Reference Wind Speed
Measured wind speed at reference height.
Reference Height
Height at which wind speed was measured.
Target Hub Height
Proposed turbine hub height.
Wind Shear Exponent
Wind shear exponent. 0.14 open terrain, 0.25 suburban.
Rotor Diameter
Turbine rotor diameter.
Turbine Efficiency
Overall turbine power coefficient.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Reference Wind Speed = 6, Reference Height = 10, Target Hub Height = 80, Wind Shear Exponent = 0.14 = 6 input(s) provided
  2. Calculate Wind Speed at Hub
    Wind Speed at Hub
    8.03 = 8.03
  3. Calculate Power Increase
    Power Increase
    139.5 = 139.5
  4. Calculate Power at Target Height
    Power at Target Height
    637.1 = 637.1
  5. Calculate Power at Ref Height
    Power at Ref Height
    266 = 266

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