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Siting of Wind Farms in RI Coastal Waters: Wind Resources and Technology Development Index- Spaulding
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Siting of Wind Farms in RI Coastal Waters: Wind Resources and Technology Development Index- Spaulding

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Siting of Wind Farms in RI Coastal Waters: Wind Resources and Technology Development Index presented May 24, 2011 at The Workshop to Learn Ocean Planning Tools and Techniques

Siting of Wind Farms in RI Coastal Waters: Wind Resources and Technology Development Index presented May 24, 2011 at The Workshop to Learn Ocean Planning Tools and Techniques

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  • 1. Siting of Wind Farms in RI Coastal Waters: Wind Resources and Technology Development Index Malcolm L. Spaulding Ocean Engineering, University of Rhode Island Workshop Applying Coastal Marine Spatial Planning to Energy Siting May 23-25, 2011
  • 2. Goal: Develop and implement an open, transparent , objective procedure for selecting the location of an offshore renewable energy facility that maximizes power production, and minimizes cost and environmental and human use impacts.
  • 3. Multi-Stage Screening Process Using Marine Spatial Planning Tools 1 st Tier – Hard constraints (irreconcilable difference in uses) System optimization: power production vs technical challenge (cost). 2 nd Tier – Ecological and human use impacts
  • 4. Tier #1 Screening (Hard Constraints) Wind Resource  Adequate Wind Resources ( greater than 7 m/sec at 80 m, hub height) or similar for other ocean energy sources (≥1.5 m/sec currents, ≥ 10 kW/m waves) Exclusions  Navigation areas -regulated ( shipping lanes, precautionary areas, preferred routes)  Vessel tracks ( AIS data)  Ferry routes  Regulated areas ( disposal site, military areas, unexploded ordnance, marine protected areas)  Airport buffer zones  Coastal buffer zone ( 1 km)  Cable Areas (?)
  • 5. Tier #1 Screening (cont’d)  Technology Development Challenge Water depth range, dependent on technology Mono-piles - 5 to 25 to 30 m Lattice jacket/tripod - 30 to 60 m Floating – 60 to 1000 m
  • 6. Wind Resource Map, Southern New England
  • 7. Estimates of 80 m wind speeds AWS TrueWinds data
  • 8. Wind Roses, Southern NE
  • 9. Wind Power Roses, Southern NE
  • 10. RAM Meteorological Modeling Domains
  • 11. RAM Meteorological Model Prediction, NW winds
  • 12. Comparison of Model Predictions to Observations
  • 13. Technology Development Index Objective: Develop a metric based on technical challenge to power production potential to screen for sites. TDI = TCI/PPP where TDI –Technology Development Index TCI- Technical Challenge Index PPP- Power Production Potential Presented in form of dimensionless values (predicted TDI divided by lowest TDI possible in area of interest)
  • 14. Schafer and Hartshorn, 1965; Sirkin, 1982 End Moraines of Southeastern New England
  • 15. Mohegan Bluffs, BI – Complex Stratigraphy
  • 16. - Boothroyd and Sirkin, 2002 Mohegan Bluffs, BI – Complex Stratigraphy
  • 17. Technology challenge for lattice jacket structures (Jonas, 2010)
  • 18. AIS SERIES
  • 19. Visualization Series
  • 20. TDI- In stream tidal current Threshold - 1 m/sec Threshold – 1.3 m/sec
  • 21. Block Island Topography and Land Cover
  • 22. Observed Wind Speed and Power Roses
  • 23. NW wind case – October 30, 2008
  • 24. SW Wind case –July 8, 2008
  • 25. Model predicted average wind speed at 10 and 80 m
  • 26. Extreme Waves in Vicinity of Block Island Bathymetry Wave rose Extreme Wave Amplitude Once in 100 yrs
  • 27. High Resolution Technology Development Index- Block Island
  • 28. High Resolution Application of TDI Block Island (state waters)
  • 29. OCEANOGRAPHIC REGIONS Oceanographic variables SST STRATIFICATION FALL SPRING 12.5 m 27.5 m
  • 30. GEOMORPHOLOGIC VARIABLES BOTTOM ROUGHNESS (J.King GRAIN SIZE : PHI MEDIAN SLOPE DEPTH
  • 31. FALL SPRING Oceanographic Ecological
  • 32. FALL TYPOLOGY Cluster fall Biodiversity Index Richness Index Dominant group Sakonnet 10 7.1 Demersal Skate&squid Deep 5.7 5.7 Medium game Mammals Rocky 7.5 7.1 Demersal RIS 9.5 8.6 Demersal Mammals Littoral 9.5 10 Demersal, skate&Lobster
  • 33. SPRING TYPOLOGY Cluster Biodiversity Index Richness Index Dominant group Deep 6.5 8.4 Mammals (Demersal & Herring) RIS2 10 10 Demersal & Herring Rocky/BIS 6 8.4 Demersal & Mammals RIS 6 6.8 Herring & Mammals Littoral 5.7 6.3 Demersal& Lobster
  • 34. Conclusions • Ocean SAMP very effective approach to planning for and siting offshore renewable energy facilities: comprehensive, inclusive, cost effective, and consistent with state and federal regulatory framework. • Marine spatial planning (MSP) powerful tool to assist in siting decisions and assessing tradeoffs (new tools: technology development index, ecosystem valuation approaches(in progress))

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