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Current Costs of Geothermal Power Generation in New Zealand

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Current Costs of Geothermal Power Generation in New Zealand ( current-costs-geothermal-power-generation-new-zealand )

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Assessment of the Costs of Geothermal Power Generation in New Zealand the development cost estimates for Option 18 as built up in Table 7.2. This option was chosen being a typical project configuration of a 50 MW plant on a 260 oC resource. From this computation it is assessed that local and overseas cost are both about 50% of the total project cost. Table 7-4 Assessed Split of Development Costs into Local / Overseas Components Establishment Cost Drilling Cost Option 18. Low envelope. 260oC. 50 MW. SF. Assessed Local Content 90% 3.5 Local Cost Foreign Cost % Total Cost NZD M NZD M 3.2 NZD M 0.4 40% 89.0 35.6 53.4 Steamfield Cost 80% 33.0 26.4 6.6 Power Plant Cost 25% 95.0 23.8 71.3 Transmission Interconnection Cost 40% 7.0 2.8 4.2 Developer Cost Total 90% 16.0 243.5 14.4 106.1 44% 1.6 137.4 56% In the event that the turbine, generator and electrical equipment are to be sourced from Japan then approximately 75% of the foreign currency requirement should be indexed to the Japanese Yen, otherwise it should be indexed in full against the USD. 7.4 Recent Changes and Future Trends in Power Sector Costs Between 2003 and 2007 the global economy exhibited very large fluctuations in the prices of both fossil fuels and commodities. 7.4.1 Impact of fossil fuel price increases21 Very large increases in fossil fuel prices during 2006 and 2007 had two significant impacts on the geothermal industry: they provided considerable stimulation to the oil and gas exploration industry which put considerable pressure on the availability of drilling rigs, drilling personnel, drilling materials, wellheads valves and casing in both the oil and gas and geothermal industries they led to significant increases in drilling rental rates and the cost of drilling materials. In a New Zealand context, rental rates for large drilling rigs were around NZD 45,000 per day in 21 Written in mid 2007. Sinclair Knight Merz SKM Cost of Geothermal Power Report (2007 Cost Basis)R1.doc PAGE 48

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