Feasibility Study
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GLWEC Final Feasibility Report Great Lakes Wind Energy Center Feasibility Study Final Feasibility Report Submitted as part of the Great Lakes Wind Energy Center Feasibility Study to: Cuyahoga County, Ohio Great Lakes Energy Development Task Force juwi GmbH JW Great Lakes Wind LLC Tower Press Building 1900 Superior Avenue, Suite 333 Cleveland, OH 44114-4420 Office: 216.344.9305 Principal Authors: Barbi Driedger-Marschall Peter K. Endres Ralf M. Krueger Christof van den Bruck Final Feasibility Report GLWEC Feasibility Study April 2009 GLWEC Final Feasibility Report This page intentionally left blank GLWEC Final Feasibility Report Project Team GLWEC Final Feasibility Report Notice: This report presents final feasibility results for the Great Lakes Wind Energy Center. The Great Lakes Wind Energy Center Feasibility Study is being conducted by juwi GmbH and its Ohio-based subsidiary JW Great Lakes Wind LLC, on behalf of the Cuyahoga County Great Lakes Energy Development Task Force. Please direct questions regarding the Great Lakes Wind Energy Center Feasibility Study to Ryan Miday at [email protected] or (216) 299-9326. Disclaimer: This report was prepared by juwi GmbH and its subsidiary JW Great Lakes Wind LLC, with contributions from GLWEC Project Team members. Neither juwi GmbH, JW Great Lakes Wind LLC, nor Project Team members make any warranty of representation, express or implied, with respect to the accuracy, completeness, or usefulness of the information contained in this report. Neither JW Great Lakes Wind LLC, juwi GmbH, nor Project Team members assume any liability with respect to the use of, or damages resulting from the use of, any information disclosed in this report. GLWEC Final Feasibility Report Table of Contents 1 Executive Summary .................................................................................................. 1-1 2 Introduction and Scope of Work .............................................................................. 2-1 3 Preliminary Site Selection ........................................................................................ 3-1 3.1 Siting Criteria ........................................................................................................ 3-2 3.1.1 Shipping Channels ........................................................................................ 3-2 3.1.2 Water Depth ................................................................................................. 3-3 3.1.3 Air Navigation and Radar .............................................................................. 3-4 3.1.4 Sailing Courses, Reefs, Dumping Grounds, and Salt Mine ........................... 3-7 3.1.5 Wind Resource ............................................................................................. 3-9 3.1.6 Distance to Interconnection Locations ........................................................ 3-10 3.1.7 Shipwrecks ................................................................................................. 3-12 3.1.8 Water Intake and Sewer Outfall Pipes ........................................................ 3-13 3.1.9 Audubon Ohio Important Bird Area ............................................................. 3-14 3.1.10 Geology ...................................................................................................... 3-15 3.1.11 Pilot Project Locations ................................................................................ 3-16 3.2 Photosimulations ................................................................................................ 3-20 3.3 ODNR Favorability Map ..................................................................................... 3-25 3.4 Port Authority Submerged Land Lease ............................................................... 3-26 3.5 Conclusions: Determination of Pilot Project Sites ............................................... 3-27 4 Wind Resource .......................................................................................................... 4-1 4.1 Crib Structure and Site ......................................................................................... 4-1 4.2 Analysis of Wind Data .......................................................................................... 4-3 4.2.1 Wind Measurement System .......................................................................... 4-3 4.2.2 Wind Data ..................................................................................................... 4-5 4.2.3 AWS Virtual Met Tower Data ...................................................................... 4-15 4.2.4 Correlation .................................................................................................. 4-17 4.2.5 Long-term Correlation ................................................................................. 4-17 4.3 Conclusion: Wind Resource for the Pilot Project ................................................ 4-21 5 Availability Assessment and Energy Production Estimates .................................. 5-1 5.1 Availability Assessment ........................................................................................ 5-1 5.1.1 Introduction ................................................................................................... 5-1 5.1.2 Definition of Availability ................................................................................. 5-1 5.1.3 Availability Assessment ................................................................................ 5-2 5.1.4 Availability Reduction through Blade Icing .................................................. 5-13 5.1.5 Conclusion of the Availability Assessment .................................................. 5-15 5.2 Energy Production Estimates ............................................................................. 5-18 6 Environmental Conditions ........................................................................................ 6-1 6.1 Avian Risk Assessment ........................................................................................ 6-1 6.1.1 Avian Profile at Project Site .......................................................................... 6-1 6.1.2 Important Bird Areas and Sensitive Habitats in Project Vicinity ..................... 6-3 6.1.3 NEXRAD Study ............................................................................................ 6-3 6.1.4 Literature Review of Risk to Birds at Offshore Wind Energy Sites ................. 6-5 6.1.5 Literature Review of Risk to Birds at Onshore Wind Energy Sites ................. 6-8 6.1.6 Conclusion: Avian Risk Assessment ............................................................. 6-8 6.1.7 Recommended Studies and Construction Guidelines ................................. 6-10 6.2 Initial Marine Ecological Assessment.................................................................. 6-13 6.2.1 Description of Study Area ........................................................................... 6-13 6.2.2 Natural Resources of Lake Erie .................................................................. 6-14 6.2.3 Water Quality .............................................................................................. 6-17 6.2.4 Fishery Resources ...................................................................................... 6-19 GLWEC Final Feasibility Report 6.2.5 Lake Bottom Habitats and Benthic Ecology ................................................ 6-24 6.2.6 Onshore Habitat and Terrestrial Communities ............................................ 6-28 6.2.7 Threatened and Endangered Species ......................................................... 6-30 6.2.8 Conclusion: Potential Impacts of Turbines on Marine Ecology .................... 6-30 6.3 Geology .............................................................................................................. 6-34 6.3.1 Introduction ................................................................................................. 6-34 6.3.2 Geological Conditions ................................................................................. 6-34 6.3.3 Natural Hazards .......................................................................................... 6-44 6.3.4 Preliminary Geotechnical Assessment ........................................................ 6-49 6.3.5 Foundation Types ....................................................................................... 6-53 6.3.6 Conclusions: Geological Conditions and Foundation Types ........................ 6-61 6.4 Effects of Icing, Wind, and Waves ...................................................................... 6-63 6.4.1 Introduction ................................................................................................. 6-63 6.4.2 Effects of Ice – Ice Evaluation of Lake Erie ................................................. 6-63 6.4.3 Effects of Wind Conditions .......................................................................... 6-78 6.4.4 Effects of Waves ......................................................................................... 6-88 6.4.5 Influence of Environmental Conditions on Foundation Concept ................ 6-100 6.4.6 Summary and Recommendations with Respect to Ice, Wind, and Waves 6-101 7 Conceptual Design of Pilot Project Turbines and Potential Offshore Research Platform............................................................................................................................. 7-1 7.1 Introduction