Comparative study of five different methods of adjustment by the Weibull model to determine the most accurate method of analyzing annual variations of wind energy in Tetouan - Morocco.

In this work, wind energy potential in Tetouan site located in Northern Morocco was evaluated through using Weibull probability distribution. Wind data that were collected at 10 min rate of sampling during three years at the measurement height of 60m above the ground level were used for fitting Weibull parameters. Five known identification methods that were introduced previously in the literature were considered in this process. From the obtained results, all the methods were found to be appropriate for evaluating the parameters of Weibull distribution in Tetouan area. However, the graphical method has shown weak capability, whereas the moment method was found to provide the best assessment of wind potential. Prediction of Weibull parameters of wind speed at height 80m was performed after that by applying the Justus and Mikhail method. Then, the expected electricity energy output from three different types of wind turbines was estimated.