Wind Energy Feasibility Study - Town Of Orleans

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Wind Energy Facility Economic AnalysisTown of Orleans, MATable 2-4: Factors Affecting the Availability of TurbineEnergy ProductionFactorPercent/yrGrid connection efficiency 97.0%Turbine availability 97.0%Turbine icing and blade fouling 99.2%Substation maintenance 99.8%Utility downtime 99.9%High wind speed hysteresis 100%Total Availability 93.0%The total annual availability of a turbine was computed to be 93%. The electrical generationcomputation from the WindPRO modeling software uses a standard default of 90% availability.The more conservative value is used in the following energy production calculations.2.3 Calculation of Net Energy ProductionBased on the wind resource in Orleans and the power curve for the Elecon T600-48 windturbine, mounted on a 65 meter tall tower, a total of 1,339 MWh of electricity are estimated to beproduced. A summary of the output profile for the Elecon Turbowinds T600-48 600 kW turbineis presented in Table 2-5 below:11
Wind Energy Facility Economic AnalysisTown of Orleans, MATable 2-5 - Parameters Relating to Energy ProductionWind Turbine Elecon T600-48Site Elevation (ft) 78Hub Height (m) 65Mean Wind Speed (m/s) 5.77Turbine Capacity (kW) 600Gross Output (MWh/yr) 1,488Net Output (MWh/yr) 1,339Capacity Factor (%) 28.3The estimated average annual energy production for a 600 kW Turbowinds T600-48 turbine witha 65 meter hub height would be approximately 1,339 MWh using an availability of 90%. Thecapacity factor of the wind turbine is expected to be 28.3% at a hub height of 65 meters.Increasing to a taller hub height (80 meters) would produce higher capacity factor (34.5%) andgreater energy output (1,632 MWh), but the cost of purchasing and installing the taller towerscould increase the initial costs by approximately $200,000. Net output of the turbine hasconservatively taken into account a 90% availability factor for the issues discussed above.Copies of the modeling output reports are also included in Appendix C.12
Page 1: proposalTown ofMASSACHUSETTSFebruar
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Page 34 and 35: NSTAR ELECTRICaccount no. site bill
Page 40 and 41: Bill Detail Page I of 2ffirumrHome
Page 42 and 43: ELECON - TURBOWINDSDESIGN AND SUPPL
Page 44 and 45: 1 GENERAL DESCRIPTIONThe T600 is de
Page 46 and 47: ManufacturerLMType and model 23.3PL
Page 48 and 49: 8 stepsNet power factor after compe
Page 50 and 51: 2 MECHANICAL2.1 RotorThe rotor asse
Page 52 and 53: 2.4 Yawing SystemA yaw system is pr
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Page 59 and 60: 5 CONTROLS & INSTRUMENTATION5.1 Con
Page 61 and 62: Display lay outs:Screen 1:RPM BLADE
Page 63 and 64: 6 TOWERThe wind generator support s
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Project:Orleans, MA Wind FSDescript
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APPENDIX DMUNICIPAL OWNERSHIP MODEL
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Project Summary• Single 1.65 MW V
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Project Ownership & Financing• Ow
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Pro Forma Economic ResultsBase Case
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Pro Forma Economic Results: BaseSum
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APPENDIX EECONOMIC CALCULATIONSANDP
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ECONOMIC SUMMARYWind Turbine Instal
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Wind Turbine Pro FormaOrleans, MAB
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Wind Energy Feasibility Study - Town Of Orleans

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