Previous assessments on the distribution of wind velocity based on the Weibull
two-parameter density function have so far neglected to address the differences of
wind speed variation during the course of a day. Although this aspect has been
accounted for and modelled using different methods such as sequential Monte Carlo
analysis [23,24] or Artificial Neural Networks [25] based on time series data. However,
the results of this study show that it is imperative to account for the
hourly/diurnal differences of wind velocity using Weibull estimation as the wind
energy potential can vary significantly. In the case of Grenada the energy output
varies by a factor of three. This aspect is of particular importance as the expansion
of electricity capacity through WECTs or their appliance in isolated power systems
when based on a Weibull distribution using daily average wind velocity will almost
certainly fail to meet the planned electricity load.