The Vermont Wind Assessment Program led by Vermont Tech has measured the wind velocity at 25 locations in the state of Vermont in 2005 and 2006 .

The results are provided in the table below for the site of Shelburne:

The information is provided here in a Weibull's distribution. We will use here for simplicity a Rayleigh's distribution with the same average speed:

a. Justify the choice of the Rayleigh's distribution.

We can compare on the graph below the two distributions for the month of November 2005 which has the Weibull's coefficient the most different from 2:

b. What is the most frequent wind speed for each month and for the year?

c. What is the most contributing wind speed for each month and for the year?

d. What is the available wind power density (W/m2) for each month and for the year?

e. Assuming that the exponent of the shear effect equation is 0.14, extrapolate the values of b, c, and d to a 50m elevation above ground elevation.

f. What is the class of this site?
The site is Class 1.