1 / 18

Offshore Wind

Offshore Wind. Geoff Sharples geoff@clearpathenergyllc.com. Frequently Unanswered Questions. Why don’t “they” build more offshore wind? Why not make the blades bigger? How big will turbines get?. Offshore Resource is Good. The Market Drivers Converge. New offshore exceeds new onshore.

prue
Download Presentation

Offshore Wind

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Offshore Wind Geoff Sharples geoff@clearpathenergyllc.com

  2. Frequently Unanswered Questions • Why don’t “they” build more offshore wind? • Why not make the blades bigger? • How big will turbines get?

  3. Offshore Resource is Good

  4. The Market Drivers Converge New offshore exceeds new onshore

  5. Current commercial turbines stand in less than 30m of water huddled at 20x20

  6. Wind ventures further offshore To a shore based observer a 90m nacelle is below the horizon at 35 km To a shore based observer a wind farm appears as white stripe at 20km Interactive map at http://www.4coffshore.com/offshorewind/ Source: EWEA Oceans of Opportunity 2009 Confidential

  7. Power Prices Higher in Coastal States Cape Wind PPA at 18 c/kWh

  8. The cycle of non-innovation Capital intensity curtails innovation but Offshore turbines today : Modified onshore turbines Confined to shallow water Incumbents: understand the technical issues Have a vested interest in existing supply chains and facilities. Human customers demand cheap reliable power Project Financiers are risk averse Offshore wind: Close to load Far from view Large Resource Because Developer tech risk averse Because Incumbents fund evolutionary design Utilities are risk averse Because Entrepreneurs can’t fund revolutionary prototypes

  9. Cost of energy COE = (DR+IWF) x ICC + LRC + O&M AEPnet Where: COE = LevelizedCost of Energy ($/kWh) (constant dollars) DR = Discount Rate (1/yr) = RISK Large Impact IWF = Insurance, Warranty and Fees (1/yr) ICC = Initial Installed Capital Cost ($) = TURCC+ BOSCC TURCC = Turbine Capital Cost ($) Some Impact BOSCC= Balance of System Capital Cost ($) Small? Impact LRC = LevelizedReplacement/Overhaul Cost ($/yr) Med Impact O&M = LevelizedO&M Cost ($/yr) Med Impact AEPnet =Net Annual Energy Production (kWh/yr) Large Impact

  10. Physical Constraints Swept Area R^2 Mechanical conversion efficiency Rotor Power Coefficient conversion wind to mechanical (subject to Betz limit) air density U = wind speed

  11. Design Objectives • Reduce Risk • Increase energy capture • Get to better resource • Reduce operations cost • Increase turbine capacity

  12. Design Areas • Blades • Towers • Generators

  13. Rethink old ideas

  14. Transitional Technology Status Quo

  15. Floating Structures Status Quo

  16. Frequently Unanswered Questions • Why don’t “they” build more offshore wind? • Why not make the blades bigger? • How big will turbines get?

  17. FIN Thank You

More Related