This paper, presents the analysis of wind speed data and available energy in Rafha area using wind machines of 600, 1000 and 1500kW sizes from three manufacturers. The long-term annual mean values of wind speeds were found to vary between a minimum of 2.5m/s in the year 2002 and a maximum of 4.9m/s in 1990. The frequency distribution showed that wind remained silent for 7% of the time on an average during 24 years of data period and 35% between 0 and 3.5m/s. Wind speed remained above 3.5m/s for 65% of the time and only 20% of the times above 6.5m/s. The annual wind energy production and plant capacity factors, obtained using different methods and wind machines of three sizes and from three manufacturers are also discussed and compared.