RenewableEnergyResources in Oman The space required for installation of wind farms with a total capacity of 750 MW is available in the mountains north of Salalah where the highest wind speeds in Oman are measured. Another possibility for installation of wind turbines is at Sur where the third highest wind energy resources are observed. The estimated required land area for a 750 MW wind farm is in the order of 100 km 2 assuming 375 turbines with a capacity of 2 MW each. A photo of the landscape in the Dhofar Mountains is included in Appendix 2. 4.1.4 Potential electricity generation At different locations A tentative estimate of the energy output by a 2 MW wind turbine erected in the five high wind areas in Oman is shown in Fig. 4.3. The reference wind turbine has a hub height of 80 m and a rotor diameter of 90 m. Fig. 4.3 Estimated annual energy output by a 2 MW wind turbine at different locations 8000 7000 6000 MWh/year 5000 4000 3000 2000 1000 0 Quiroon Hariti Thumrait Masirah Joba Sur Location Total electricity generation The wind conditions at Thumrait and at Quiroon Hariti and a 2MW reference wind turbine with a hub height of 80 m has been used as a n example for estimation of the technical potential for electricity generation by wind turbines. The location at Masirah is not considered suitable for installation of large scale wind power capacity as the present power system is an isolated system and the energy consumptionon the island is relatively small. In the power system connects to the main system via sea cables Masirah may be relevant for installation of wind turbines. Joba and Sur could be potential sites for wind turbines, however the annual output at these locations is more than 25 % lower than at Quiroon Hariti. The tentative estimated annual net energy output from a 2 MW wind turbine at Thumrait is 5820 MWh/year and at Quiroon Hariti the net output is 6470 MWh/year. If half of the capacity equal to 375 MW is installed at wind conditions corresponding to the wind conditions at Thumrait and the other half of the capacity is installed at wind conditions similar to the conditions at Quiroon Hariti the total annual net output of 750 MW wind turbine capacity will be in the order of 2300 GWh/year. This corresponds to 20 % of the total electricity generation in Oman in 2005. Page 56 of 134 .
RenewableEnergyResources in Oman 4.2 Solar energy 4.2.1 Solar data The solar insolation varies from year to year. It is therefore important to use data covering several years in order to estimate the long term average solar energy resources. Data from 1987 to 1992 for six different locations in Oman has been identified and used for this study in order to base the analyses on long term data, Ref./8 /. These data are global insolation data which is the sum of direct and diffuse radiationon a horizontal plane measured with a pyranograph. Only one year data was available from DGCAM, Ref /7/. The locations of the sites where the solar insolation data is measured is shown in Fig. 4.4. Fig.4.4 Locations of the stations from where the long term solar data used in this study have been measured, Ref /8/. Page 57 of 134 .