Solar PV water pumping study - FINAL REPORT ... - UNDP, Namibia

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Feasibility Assessment for the Replacement of Diesel Pumps with Solar Pumps List of Figures FINAL REPORT: September 2006 Figure 2.1: Hydraulic load curve of four PVP systems at maximum Watt peak...................... 6 Figure 2.2: Price development for PVP components............................................................ 13 Figure 3.1: Overview of the life cycle costing structure in the spreadsheet.......................... 15 Figure 3.2: Example of hydraulic load graphs ...................................................................... 16 Figure 3.3: Approximate relationship between the hydraulic load and Watt peak ................ 26 Figure 3.4: Cost breakdown of the LCC for Grundfos and Total Energie TSP 4000 ............ 27 Figure 3.5: Cost breakdown for diesel pumps delivering an average flow of 10 and 32m 3 /day ........................................................................................................................................ 27 Figure 3.6: Life cycle cost for PVP and DP........................................................................... 28 Figure 3.7: Life Cycle Costing as a function of the hydraulic load ........................................ 29 Figure 3.8: Typical years to breakeven graph for PV pump vs. a diesel pump .................... 30 Figure 3.9: The impact of fuel price on the LCC and breakeven .......................................... 30 Figure 3.10: Indicative relationship between fuel price and breakeven ................................ 31 Figure 3.11: PVP capital cost reduction when using a tracking array with 20% increase in solar irradiation............................................................................................................... 31 Figure 3.12: Hydraulic load lines with years to breakeven ................................................... 33 Figure 3.13: Cost effective areas for pumping technologies................................................. 33 Figure 3.14: Years to breakeven as a function of hydraulic load.......................................... 34 Figure 3.15: Years to breakeven as a function of Watt peak................................................ 34 Figure 3.16: Years to breakeven for a DRWS installation pumping 10hours everyday........ 35 Figure 3.17: Unit Water Cost of PVPs at selected heads ..................................................... 37 Figure 3.18: Unit Water Cost of DPs at selected heads ....................................................... 38 Figure 3.19: Percentage UWC of PVPs as a function of UWC of DPs................................. 38 Figure 3.20: Sensitivity analysis: Discount rate & project life ............................................... 39 Figure 3.21: Sensitivity analysis: Fuel escalation and fuel consumption .............................. 40 Figure 3.22: Sensitivity analysis: Transport costs................................................................. 40 Figure 4.1: Number of boreholes in use at different borehole depths................................... 42 Page v
Feasibility Assessment for the Replacement of Diesel Pumps with Solar Pumps Abbreviations FINAL REPORT: September 2006 CBM Community Based Management DP Diesel Water Pump DRWS Directorate of Rural Water Supply DWA Department of Water Affairs GHG Green House Gases HDPE High Density Polyethylene MET Ministry of Environment and Tourism MME Ministry of Mines and Energy NAMREP Namibia Renewable Energy Programme NamWater Namibia Water Corporation PV Photovoltaic PVP Photovoltaic Water Pump RE Renewable Energy SRF Solar Revolving Fund UNDP United Nations Development Programme WPA Water Point Association WPC Water Point Committee Page vi
Page 1 and 2: MINISTRY OF MINES AND ENERGY BARRIE
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Page 41 and 42: Impact on Years-tobreakeven Feasibi
Page 45 and 46: Years to breakeven Feasibility Asse
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Solar PV water pumping study - FINAL REPORT ... - UNDP, Namibia

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