How to calculate your wind power

 

• Find your location on the wind map or check the state wind resources maps.

• Take the wind speed in m/s (50 m) an put it into the calculator.

• Select the height of the wind turbine in meters.

• Choose the roughness length according to the geographical structure / landscape.

• If you don't know your shape parameter assume 2 (In the U.S. it ranges between 1-3).

• Estimate the rotor area in m² (there is ≈ 11 ft² in a m²).

• Press Calculate and you will get an estimate on the theoretical power output per year.

Calculate your wind power / wind energy

Wind Data
Wind Speed (1.0 - 20.0 m/s)		m/s
Height Above Ground		m
Parameter
Roughness Length (0.0002 - 1.6)*		m
Shape Parameter (1-3) Standard=2*
Rotor Area Exposed to the Wind
Rotor Area [m²]		m²
	Wind Energy (Weibull)* [W/m²]
	Maximum Electrical Energy* [W/m²]
	Theoretical Annual Power Output* [kW]

 

Percent Wind speed (Weibull)
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20 m/s

 

 

*The wind power calculation is based on a Weibull distribution with an air density of 1.225 kg/m³ at 15°C. Shape parameter for the U.S. range between 1-3. The energy yield is limited to 59.3% of the total energy according to Betz's law. The results are for information only and can only serve as an indication. Project specific wind energy production and specific calculation of energy outputs require a thorogh investigation of the site. For more information send us an » E-mail.