Cost Estimate for Different Wind Turbine Technologies
Breakdown of components and costs associated with wind turbine technologies for levelized cost of energy analysis. Major components include rotor, drivetrain, nacelle, control system, tower, foundation, and more. Data sources include NREL 2010. Comparison based on Initial Capacity Cost, Fixed Charged Rate, Annual Operation Expense, and Net Annual Energy Production.
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Presentation Transcript
IOWA STATE UNIVERSITY Department of Civil, Construction and Environmental Engineering Cost Estimate for Different Wind Turbine Technologies Bin Cai Wind Energy Science, Engineering and Policy Major Department: Civil, Construction and Environmental Engineering Advisor: Dr. Sri Sritharan
Outline Background A Breakdown of Components for LevelizedCost of Energy Cost Estimate Uncertainties Future Work
Background Levelized Cost of Energy (LCOE) is a convenient way of comparing generation technologies on a common basis and is used throughout the utility industry as a high level screening tool. ??? ??? + ??? (??????/1000) ???? = ICC: Initial Capacity Cost FCR: Fixed Charged Rate AOE: Annual Operation Expense AEP(net): Net Annual Energy Production
A Breakdown of Wind Turbine Costs Major Components to be included in the LCOE Rotor Drivetrain, Nacelle Control, Safety system Tower components and Foundation Site preparation Mobilization, Assembly and Installation Balance of Station (BOS) o Electrical interface & connections o Communication system o Engineering & permits Annual Operating Expense (AOE) o Replacement cost o O&M cost o Land lease cost Overhead and profit
A Breakdown of Wind Turbine Costs Data from: Installed capital costs for the land-based wind reference project, NREL, 2010
A Breakdown of Tower and Foundation Costs Major component Sub-component Cost Tower Foundation Hub height, swept area Concrete modules, Steel tubes Shop fabrication Conceptual design Connections between tower and turbine; Tower segments of different materials Connection elements Conceptual design Segments erection; Tendons installation; Allowance Tower erection and post- tensioning of concrete tower Conceptual design Included in concrete to steel connection Access ladders and platforms Ladders, platforms Interior and exterior surface paint as needed Included in concrete to steel connection Surface paint
Steel Tower LCOE 2.3 MW Steel Tower LCOE vs. Hub height 8.00 7.357 7.323 7.00 5.766 5.746 6.00 LCOE( /kWh) 5.215 5.192 5.00 1.5 MW Steel Tower LCOE vs. Hub height 4.00 11.00 9.877 9.861 3.00 10.00 9.00 2.00 7.349 60 80 100 120 140 160 7.262 8.00 LCOE( /kWh) 6.843 6.674 6.469 6.448 Hub height(m) 7.00 70m rotor diameter 6.00 3.0 MW Steel Tower LCOE vs. Hub height 82.5m rotor diameter 5.00 108m rotor diameter 6.278 4.00 6.221 6.50 3.00 Poly. (70m rotor diameter) 6.00 2.00 5.50 5.103 5.091 60 80 100 120 140 160 4.695 4.652 5.00 LCOE( /kWh) Hub height(m) 4.50 4.00 3.50 3.00 2.50 2.00 60 80 100 120 140 160 Hub height(m)
Steel Tower LCOE Specific Investment Cost ($/MWh/yr) Steel Tower Specific Investment Cost vs. Hub height 1,200.0 Investment of the wind turbine ?????? ?????????? 1,071.2 1,100.0 y = -8.3498x + 1739.2 R = 1 1,000.0 1,022.0 SIC($/MWh) Including foundation; Except site cost, roads, grid connections and maintenance cost. 904.2 900.0 y = 0.0436x2 - 13.145x + 1783.5 R = 0.9473 876.6 846.2 3MW 800.0 5MW 784.1 700.0 Poly. (3MW) Poly. (5MW) 600.0 40 60 80 100 120 140 160 180 Hub height(m) Data from Vindforsk project report, July 2010
Levelized Cost of Energy ------ Electric Power Research Institute Source: Electric Power Research Institute Program on Technology Innovation: Integrated Generation Technology Options 2012, Feb. 2013. Available online at http://www.epri.com/search/Pages/results.aspx?k=1026656&r=mpkeyword%3AAREBVGVjaG5vbG9neSBUcmVuZHMJbXBrZXl3b3JkA QJeIgIiJA%3D%3D,mptabresults%3AARABUmVzZWFyY2ggUmVzdWx0cwxtcHRhYnJlc3VsdHMBAl4iAiIk
Levelized Cost of Energy ------ Department of Energy
Cost Estimation Uncertainty Physical process, performance of key components in new technology Preliminary designs and project execution o The total project schedule: 2-3 years on the order of wind turbines Unanticipated changes in cost of available materials, labor, or capital Permitting, licensing, forthcoming environmental regulation and other regulatory actions Others o Labor disruptions o Weather conditions
Cost Estimation Uncertainty Source: Electric Power Research Institute Program on Technology Innovation: Integrated Generation Technology Options 2012, Feb. 2013.
Future Work Land based Wind Turbine Tower cost with different technologies Tower material Transportation Assembly and installation Site development Decommissioning Labor cost Risk Analysis
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