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Massachusetts Muskeget Channel Tidal In-Stream Power Plant

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Massachusetts Muskeget Channel Tidal In-Stream Power Plant System Level Design, Performance, Cost and Economic Assessment – Massachusetts Muskeget Channel Tidal In-Stream Power Plant Muskeget Channel Report: EPRI – TP - 006 - MA Principal Investigator: Mirko Previsic Contributors: Brian Polagye, Roger Bedard Date: June 10, 2006 System Level Design, Performance and Cost of Massachusetts Tidal Power Plant DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITIES This document was prepared by the organizations named below as an account of work sponsored or cosponsored by the Electric Power Research Institute Inc. (EPRI). Neither EPRI, any member of EPRI, any cosponsor, the organization (s) below, nor any person acting on behalf of any of them. (A) Makes any warranty or representation whatsoever, express or implied, (I) with respect to the use of any information, apparatus, method, process or similar item disclosed in this document, including merchantability and fitness for a particular purpose, or (II) that such use does not infringe on or interfere with privately owned rights, including any party’s intellectual property, or (III) that this document is suitable to any particular user’s circumstance; or (B) Assumes responsibility for any damages or other liability whatsoever (including any consequential damages, even if EPRI or any EPRI representative has been advised of the possibility of such damages) resulting for your selection or use of this document or any other information, apparatus, method, process or similar item disclosed in this document. Organization(s) that prepared this document Global Energy Partners LLC Virginia Polytechnic Institute and State University Mirko Previsic Consulting Brian Polagye1 Consulting 1 PhD Student, Department of Mechanical Engineering, University of Washington 2 Table of Contents List of Figures ..................................................................................................................... 5 List of Tables....................................................................................................................... 6 1. Introduction and Summary.............................................................................................. 7 2. Site Selection................................................................................................................. 11 Tidal Energy Resource .................................................................................................. 14 Grid Interconnection options......................................................................................... 18 Nearby port facilities..................................................................................................... 19 Bathymetry .................................................................................................................... 21 Seabed Composition...................................................................................................... 22 Navigational Clearances................................................................................................ 24 Other Site Considerations.............................................. Error! Bookmark not defined. Relevant Site Data......................................................................................................... 24 3. Lunar Energy Device .................................................................................................... 24 Device Description........................................................................................................ 24 Device Performance ...................................................................................................... 27 Lunar Device Evolution ................................................................................................ 31 Installation of Lunar Module......................................................................................... 32 Operational Activities Lunar Energy ............................................................................ 34 4. Marine Current Turbines............................................................................................... 36 Device Performance ...................................................................................................... 37 Device Specification ..................................................................................................... 40 MCT Device Evolution ................................................................................................. 41 Monopile Foundations................................................................................................... 43 Pile Installation.............................................................................................................. 45 Operational and Maintenance Activities....................................................................... 48 5. Electrical Interconnection ............................................................................................. 50 Subsea Cabling.............................................................................................................. 51 Onshore Cabling and Grid Interconnection .................................................................. 52 6. System Design – Pilot Plant .......................................................................................... 53 7. System Design - Commercial TISEC Power Plant ....................................................... 55 Electrical Interconnection ............................................................................................. 55 Physical Layout ............................................................................................................. 56 8. Cost Assessment – Demonstration Plant....................................................................... 60 9. Cost Assessment – Commercial Plant........................................................................... 61 10. Cost of Electricity Assessments .................................................................................. 65 11. Sensitivity Studies....................................................................................................... 70 Array Size...................................................................................................................... 70 Power Plant System Availability................................................................................... 72 Current Velocity............................................................................................................ 72 Design Velocity............................................................................................................. 74 Financial Assumptions .................................................................................................. 75 12. Conclusions ................................................................................................................. 77 Pilot In-Stream Tidal Power Plant ................................................................................ 77 Commercial In-Stream Tidal Power Plant .................................................................... 77 System Level Design, Performance and Cost of Massachusetts Tidal Power Plant Techno-economic Challenges ....................................................................................... 78 General Conclusions ..................................................................................................... 78 Recommendations ......................................................................................................... 80 13. References ................................................................................................................... 83 14. Appendix ..................................................................................................................... 84 Irrelevance of Flow Decay Concerns ............................................................................ 84 Hub-height Velocity Approximation ............................................................................ 85 Utility Generator Cost of Electricity Worksheet........................................................... 87 Non Utility Generator Internal Rate of Return Worksheet ........................................... 94 Municipal Generator Cost of Electricity Worksheet..................................................... 99 __________________________________________________________________________ 4 System Level Design, Performance and Cost of Massachusetts Tidal Power Plant List of Figures Figure 1: Regional View of the Musheget Channel.............................................................. 12 Figure 2: Local Map of Muskeget Channel showing Bathymetry....................................... 12 Figure 3: Nautical Chart of the Golden Gate Bridge (water depth in feet).......................... 13 Figure 4: Depth averaged velocity distribution at the target site. Velocity shown is in m/s ............................................................................................................................................... 14 Figure 5 - Typical depth-averaged velocity profile over a 48 hour period ........................... 15 Figure 6 - Typical depth-averaged power variation over a 48-hour period .......................... 15 Figure 7 - Velocity profile over a 20 day period covering more then a full lunar cycle....... 16 Figure 8 - Power variation of a 20-day period .....................................................................
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