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Study on Renewable Energy Resources, Oman - authority for ...

Study on Renewable Energy Resources, Oman - authority for ...

Renewable Energy Resources in Oman Annual energy output The annual energy output depends on the wind resource at the site. The annual energy output of the five selected stations is shown in table 6.10. Table 6.10 Annual Energy Output 20 MW wind farm by station Station Wind speed 10 m agl Capacity factor Annual Energy Output 20 MW wind farm m/s % MWh/year Quiroon Hariti 6.2 0.39 67,595 Thumrait 5.8 0.33 58,416 Masirah 5.8 0.35 60,870 Joba 5.2 0.29 50,528 Sur 5.2 0.27 47,387 Production cost Table 6.11 Wind energy - levelised cost per MWh by site Station USD/MWh USD/MWh USD/MWh USD/MWh Discount Factor (Base Case) 7.5% 5% 10% 13% Quiroon Hariti 67.2 56.4 79.0 94.0 Thumrait 73.5 61.7 86.3 102.8 Masirah 70.6 59.3 82.9 98.7 Joba 88.7 77.0 101.3 117.5 Sur 88.5 74.3 103.9 123.8 Wind Energy cost varies according the wind speed at the site. The most efficient production site is Qairoon with average cost of 67.2 USD/MWh, while Joba is the most expensive production site with 88.7 USD/MWh. Page 102 of 134 .

Renewable Energy Resources in Oman 6.3 Overview of generation costs in Oman Fig. 6.4 shows the relation between the cost of generation for conventional plants, wind turbines at five specific sites, a 20 MW solar thermal plant and the grid connected 20 MW PV plant. The figure also shows the current average cost of 0.31 USD/kWh, excl. RAECO areas. The assumed gas price is 1.5 USD/MMBtu also for new generation capacity. Fig. 6.4 Overview of generation cost for new capacity in Oman USD/MWh USD/MWh 250 207 5000 hrs 7500 hrs 37 35 31 28 76 70 48 39 67 74 71 89 89 GT 140MW CCGT 400MW HFO 300MW COAL 1000MW Wind Wind (Qairoon) (Thumrait) Wind (Masirah) Wind (Joba) Wind (Sur) Solar Thermal 20MW PV 20MW The figure indicates that Gas Turbines or Combined Cycles plants have the lowest average production cost. However the table also shows that based on the present costs of solar systems wind power is the most competitive of the renewable energy sources. It has significantly lower cost than CSP and PV power plants. 6.3.1 Impact of Wind Farm on Generation Expansion In OPWP's 7 year statement for 2007-13, Ref /5/ a number of scenarios has been analysed. Common for all scenarios is that the new generation units will be gas turbines and combined cycle units. The economic effects by replacing a minor part of the planned capacity by wind turbine capacity are illustrated by the following example. It is assumed that 40 MW wind power plant replaces 40 MW gas power plant. The establishment of 40 MW wind farm will have the following main effects on the Omani power system: • The electricity generation from the wind farm will reduce electricity generation (GWh) at other plants in the system, and thereby lead to decreased fuel costs, variable O&M costs, and emissions • The wind farm will contribute to the installed capacity in the system (MW). Due to wind speed variation the net capacity contribution by wind turbines is less than the installed capacity. Page 103 of 134 .

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