The wind resource assessment for three locations in Rakiraki, Fiji are carried out. The wind resources at Rokavukavu and Navolau has been analyzed along with the nearby Tuvavatu site. The annual diurnal wind speed, wind shear and turbulence intensity were analyzed. Rokavukavu, Navolau and Tuvavatu site has an average wind speed of 5.91 m/s, 8.94 m/s and 8.13 m/s respectively at 55 m above ground level (a.g.l). The wind direction for all the three sites is predominantly SouthEast. The diurnal wind speed pattern and the wind shear pattern for all the three sites were consistently similar. The turbulence intensity at Rokavukavu, Navolau and Tuvavatu were found to be 14.9%, 17.1% and 11.7% at 55 m a.g.l. The Weibull parameters and the wind power density were obtained for all the three sites by using the moment fitting method. A high resolution wind resource map for the three sites were obtained using Wind Atlas Analysis and Application Program (WAsP). The WAsP analysis indicates good wind potential at Navolau and Tuvavatu site for power production. The annual energy production (AEP) with six Vergnet 275 kW wind turbines for Navolau and Tuvavatu site is estimated and an economic analysis is performed, which exhibited a payback period of 5 and 6 years respectively.

The wind at 50 m above ground level (a.g.l) was measured for 22 months. The mean wind speed predicted by Wind Atlas Analysis and Application Program (WAsP) at Lapaha was 6.39 m/s and the power density were 279 W/m 2 . The prevailing wind direction at Lapaha site was East and Southeast direction with a low turbulence. The WAsP wind map indicated that Lapaha has a good wind potential for power production. A wind farm consisting of four Vergnet 275 kW wind turbines at Lapaha site is expected to pay itself back in 9 years with a Benefit to Cost Ratio (BCR) of 1.74, a Levelized Cost of Energy (LCoE) in Tongan Pa'anga (TOP) of 0.10/kWh compared to TOP 0.86/kWh presently charged to domestic consumers. The expected internal rate of return (IRR) would be 50% and with a life time of 25 years. The expected cost saved from the wind farm is TOP 1.3 million per year, which is equivalent to 1.3 million liters of diesel saved, resulting in 535 tons less CO 2 emitted annually. The proposed wind farm is expected to decrease diesel consumption by 20% annually.