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Title: 2050 Offshore Wind Costs Content: h1 Lead and sign-off 2050 Costs team lead - Michael Clark Working-level analyst - Henry Shennan, Ben Marriot(DECC) Senior analyst - Sam Thomas, Rocio Concha h1 Data sources MottMac10 Markal3.24Doc ESME h1 Technologies costed in this sector * Offshore wind turbine h1 Offshore wind turbine Costs summary (£ per KW): | Overall | Low | High | | Capital | 525 | 4155 | | Operating | 35 | 159.75 | h2 Current Calculator assumptions * Lifetime = 20yrs * Efficiency = Capacity factor = 35-45% * Input Fuel = Wind h2 Investment Cost sources * High cost = Offshore Wind Round 3 - FOAK, from MottMac10, Availability = 95.6%, Aux power = 2.4%, Load factor = 43% Life = 23yrs * Low cost = Offshore Wind, -30% from ref from ESME, Availability factors = 35-40%, Life = 20yrs h2 Fixed Operating Cost sources * High cost = Offshore Wind Round 3 - FOAK, from MottMac10, Availability = 95.6%, Aux power = 2.4%, Load factor = 43% Life = 23yrs * Low cost = Vintage 1 from Markal, Availability factor = 22-50%, Life = 25yrs h1 Issues, concerns and questions * The capacity factor appears quite ambitious in comparison to other models Category: 2050 pathway costs User: Tom Counsell Picture updated at: Signed off by: Signed off at: |
Title: III.a.2 Offshore Wind Costs Content: h1 Technologies costed in this sector * Offshore wind turbines - Please click on: offshore wind cost data h1 Costs Methodology h2 Methodology used The user defines the number of offshore wind turbines. Once the trajectory is set by the user, the number of plants to be built are defined. Investment costs are a function of new build and operating cost are a function of the number of plants operating within that time period. We assume turbines retire after 20 years and the cost of replacement is included. Please see 2050 Methodology for a full description of the costs approach in the Calculator. h2 Methodology issues and uncertainties * The capacity factor appears quite ambitious in comparison to other models * Do CAPEX estimates capture connection to grid costs and wider network costs? # For connection to Grid, Mott Mac FOAK 3rd Round Offshore are modelled as up to 75km from shore in 50 metres of water, giving a high levelised cost of ~£190/MWh. The Offshore Valuation Report [http://www.offshorevaluation.org/downloads/offshore_vaulation_full.pdf] has the highest levelised cost in 2025 of £153/MWh (£226/MWh in 2015) of a floating wind turbine 100-200km from shore. Therefore, it appears that the highest cost range largely captures the cost of floating wind turbines deployed after 2025. # We have compared the costs here to the capital costs assumed in the offshore valuation report[http://www.offshorevaluation.org/downloads/offshore_vaulation_full.pdf], which included floating wind turbines up to 200km from shore and they did not exceed the high end of the capital cost range. # The wider network costs are captured in the electricity transmission sector h1 Technical Assumptions * Lifetime = 20yrs * Efficiency = Capacity factor = 35-45% (linear trajectory from 2010 to 2050) Mike Knowles comment 35 - 40% is optimistic - LF on unchanged configuration basis averaged over 5 years 2005 to 2010 was 30.8% ref DUKES 2011 * Input Fuel = Wind h1 Phase I Admin 2050 Costs team lead - Michael Clark Working-level analyst - Henry Shennan, Ben Marriot(DECC) Senior analyst - Sam Thomas, Rocio Concha Category: Sector by sector cost assumptions User: Knowlesmichael2 Picture updated at: Signed off by: Signed off at: |