Why does wind power increase as the cube, not the square of speed?
-Richard in Seattle
Oct. 7, 2015
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Bill Haman, P.E.
Program Manager

The kinetic energy of the wind can be expressed by the equation: K.E. = 0.5mU2 [...]

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How much energy/watt or kW would a wind turbine with a diameter of 1.4 meter deliver at different speeds?
-Jens in nonresident
Mar. 25, 2015
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Bill Haman, P.E.
Program Manager

Every wind turbine has a unique “power curve” that shows it’s average performance over a [...]

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Is there data available for wind turbine output?
-Ken in Iowa
Aug. 21, 2014
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Bill Haman, P.E.
Program Manager

Data recorded for wind turbines is typically archived for at least one year by the [...]

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Where can I find the monthly wind speeds for my county?
-Green Mountain, IA
Nov. 13, 2013
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Bill Haman, P.E.
Program Manager

The easiest way to obtain wind data is to locate the nearest airport and obtain [...]

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Where in Iowa is the best for wind generation?
-Monroe County, IA
Dec. 11, 2012
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Bill Haman, P.E.
Program Manager

Iowa is the seventh windiest state in the nation. The best wind resources are located [...]

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Do I need a building permit for a 600-watt wind turbine?
-Waverly, IA
Nov. 9, 2012
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Bill Haman, P.E.
Program Manager

Although each jurisdiction is different, most city and county governments do require that a building [...]

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