Wind Resource Assessments
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!
A precise understanding of your wind resource is the cornerstone of any wind project. The power in the wind varies greatly from one location to another. Click on the question to learn more
The Iowa Energy Center is a non-profit organization working to create a stable energy future for Iowa.
Their web site includes wind and solar resource maps for Iowa, as well as loan and tax incentive information.
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.
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.
A tower used at a potential project site which has equipment attached to it which is designed to assess wind resource. Generally a met tower will have anemometers, wind direction vanes, temperature and pressure sensors, and other measurement devices attached to it at various levels above the ground.