Wind Resource Assessments

Wind Prospecting

Assessing your wind resource is a critical piece of planning a wind project. Click on the link at the bottom of this page to view a presentation given by Wes Slaymaker for a Wisconsin Focus on Energy Seminar in February 2005.

CAUTION: This is a very large (4.5 MB) file and may be slow to download! 

Wind Shear

A term and calculation used to describe how wind speed increases with height above the surface of the earth. The degree of wind shear is a factor of the complexity of the terrain as well as the actual heights measured. Wind shear increases as friction between the wind and the ground becomes greater. Wind shear is not a measure of the wind speed at a site. It is an extrapolation of the difference in wind speed between two different heights above the ground. Thus, high wind shear at a site does not necessarily mean high wind speeds at the site.

Wind Power Class

A way of quantifying on a scale the strength of the wind at a project site. The Department of Energy’s National Renewable Energy Laboratory defines the wind class at a site on a scale from 1 to 7 (1 being low and 7 being high) based on average wind speed and power density to offer guidance to potential developers as to where wind projects might be feasible.

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