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Assessment of the Costs of Geothermal Power Generation in New Zealand Table 7-3 Estimate of Capital Costs for Low Envelope Developments CAPTAL COSTS ‐ LOW FLOW ENVELOPE Option Res T Cycle MW 17 18 19 300 260 260 SF SF SF 50 50 20 20 21 22 23 230 300 260 260 SF DF DF DF 20 50 50 20 24 25 26 27 28 29 30 31 32 230 300 260 260 230 300 260 260 230 Establishment Costs Permitting Land acquisition Geoscientific / Environmental Well Testing Civil works and Infrastructure Site Operations Pre Feas/ Feas Repors Commericalnegotiations 0.2 0.2 0.2 0.2 0.6 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.0 1.0 0.5 0.5 0.5 0.5 0.5 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.5 0.5 0.5 0.5 0.5 1.0 0.5 0.5 0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 1.0 0.5 0.5 0.5 0.5 0.5 0.2 0.2 0.2 Construction Costs 2550 2710 NZ$/kWinstalled 1,900 1,900 2,200 2,200 2,100 2,100 2,450 2,450 2,200 2,200 2,600 2,600 2,700 2,700 2,700 2,700 NZ$M 95 95 44 44 105 105 49 49 110 110 52 52 135 135 54 54 Power plant capital cost Spares* Steamfield costs NZ$M ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Electrical transmission ‐ 10km Grid connection 4.0 4.0 4.0 3.0 3.0 3.0 2.0 2.0 7.0 7.0 6.0 5.0 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Switchyard* NZ$M S/T NZ$ M Drilling Costs Rig Mob/Demob Cost per Well Production wells NZ$ M NZ$ M Wells required NZ$ M NZ $ M / well 2.6 2.6 2.6 5.2 5.2 5.2 6 11 5 31 57 26 4.2 4.2 4.2 2.6 5.2 6 31 4.2 2.6 2.6 5.2 5.2 5 10 26 52 4.2 4.2 2.6 2.6 5.2 5.2 4 6 21 31 4.2 4.2 2.6 2.6 2.6 5.2 5.2 5.2 6 9 4 31 47 21 4.2 4.2 4.2 2.6 2.6 5.2 5.2 7 10 36 52 4.2 4.2 Cost Well Injection wells Developers Costs Legal Financing Engineering & PM mgt Others NZ$ M NZ$ M NZ$ M NZ$ M 1.9 2.3 1.1 1.2 2.0 2.3 1.1 1.3 2.1 2.3 1.2 1.2 2.4 2.7 1.9 2.3 1.1 1.2 2.0 2.3 1.1 1.3 2.1 2.3 1.2 1.2 2.4 2.7 9 11 6 6 10 12 6 6 10 12 6 6 12 13 1.2 1.2 1.2 1.2 6 6 Total Project Costs NZ$ M 205 243 118 127 209 250 121 136 222 248 125 128 259 285 133 133 Ratios At USD/NZD 0.70 NZD / kW USD / kW 4,100 4,900 5,900 6,300 4,200 5,000 6,000 6,800 4,400 5,000 6,300 6,400 5,200 5,700 2,900 3,400 4,100 4,400 2,900 3,500 4,200 4,800 3,100 3,500 4,400 4,500 3,600 4,000 6,600 6,600 4,600 4,600 Sinclair Knight Merz SKM Cost of Geothermal Power Report (2007 Cost Basis)R1.doc PAGE 44 NZ$ M NZ$ M NZ$ M NZ$ M NZ$ M NZ$ M NZ$ M NZ$M 0.2 0.2 0.2 0.2 0.6 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.2 0.2 0.2 0.2 S/T NZ$M NZ$/kW installed NZ$ M NZ$ M NZ$ M 650 650 790 790 770 770 940 940 650 650 790 650 650 650 790 790 33 33 16 16 39 39 19 19 33 33 16 13 33 33 16 16 NZ$ M 4.0 4.0 3.0 3.0 7.0 7.0 4.0 4.0 4.0 2.0 2.0 3.0 6.0 6.0 7.0 4.0 4.0 3.0 2.0 7.0 6.0 4.0 4.0 4.0 2.0 3.0 3.0 6.0 7.0 7.0 4.0 4.0 2.0 2.0 6.0 6.0 NZ$ M S/TNZ$M 17 29 13 17 13 25 13 17 21 29 17 17 25 34 51 89 41 51 41 80 36 51 55 79 40 45 64 88 17 17 45 45 S/TNZ$M 13 16 8 8 14 16 8 9 15 16 8 9 17 19 9 9 138 135 66 65 151 151 74 74 150 150 74 71 175 175 76 76 2.6 2.6 5.2 5.2 5 5 26 26 4.2 4.2 Wellsrequired 4734363457446844 / well DF Hybrid 20 50 Hybrid Hybrid Hybrid 50 20 20 ORC ORC ORC ORC 50 50 20 20 0.2 0.2 0.2 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 1.0 1.0 0.5 0.5 0.5 0.5 0.2 0.2 0.2 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 3.5 3.5 3.0 3.0 3.5 3.5 3.0 3.0 3.5 3.5 3.0 3.0 3.5 3.5 3.0 3.0 2.6 5.2 5 26 4.2PDF Image | Current Costs of Geothermal Power Generation in New Zealand
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