This map indicates that Michigan has wind resources suitable with utility-scale wind farms. The chart shows that the onshore utility-scale wind supply in Michigan are concentrated along the immediate shores of the Great Lakes (especially Lakes Michigan and Superior) and on offshore islands. The Great Lakes themselves have good-to-outstanding wind resource. A large area of Class 3 supply is positioned northeast of Saginaw on the "thumb" of the map. Specific regions in Class 3 areas could have higher wind power class values at 80 m than shown on the 50-m map because of high wind shear. Given the advances in wind energy technology, a number of locations in Class 3 areas may be suitable for large scale wind development.

A source of clean energy, wind is categorized by wind power classes, these are based on average air speeds. These classes vary from Class 1 (the slowest) to Class 7 (the peak). Generally, at 50 meters , wind power Class 4 or higher can be useful for producing wind power with substantial turbines. Class 4 and above are deemed excellent resources. Special areas in the Class 3 regions could have superior wind power classes at 80 meters than revealed on the 50 meter map as a result of possible elevated wind shear. Due to the advances in technologies, some regions in the Class 3 regions may appropriate for utility-scale wind power development.