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8/8/2019 RI Ocean Special Area Management Plan (SAMP)
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ATM(2007) Potential WindATM(2007) Potential Wind
Farm SitesFarm Sites
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70 mwinds
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50 mpowerdensity
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MMS Use SummaryMMS Use Summary
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Major Fishing AreasMajor Fishing Areas(URI, EDC)(URI, EDC)
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Initial Concerns with Some SitesInitial Concerns with Some Sites
Extremewaves, costlystructure?
Extremewaves, closeto breakwater
Viable Sites,Resource useconflicts ??
Extreme
waves, maylimit seawardextent
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Ocean SAMP Study AreaOcean SAMP Study Area
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Study Area SelectionStudy Area SelectionInclude all state and contiguous federalwatersInclude sites for alternative tradeoff analysisrequired for permitting processConsistent with Army Corp DredgedMaterial Disposal Assessment
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Phased StudyPhased StudyPhase I - Ocean SAMP and associatedsupporting studiesPhase II- Detailed investigations(meteorological and oceanographicobservations, high resolution bottom, sub-
bottom, archeological, and fish habitmapping)
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Study DesignStudy DesignFollow state (CRMC) and MMS regulatoryframework for Offshore Alternative EnergyDevelopment and Production
Maximize the use of existing data and access tolocal expertise (data)Minimize cost by contracting with state entityPerform supporting studies to fill data and
information gaps, only as absolutely requiredBuild on Lessons Learned from siting of offshorewind farmsCollect sufficient data to allow Ocean SAMP to be
developed and defended
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Study ScheduleStudy ScheduleFinal site selection study 8 months*Selection of met. tower site 10 monthsFloating zone tool 12 months
( Developers identified, EIS initiated)Kick-off of Phase II, Detailed Investigations(meteorological tower**) (optional)13 monthsCompletion of Ocean SAMP 24 months
* Time from project initiation** Meteorological observations typically required
for 2 (3?) yrs
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Phase IPhase I -- Ocean SAMPOcean SAMPDevelopment of Plan and Stakeholder Involvement
Legal analysisCommercial and recreational fisheries
(Biological oceanography)
VisualizationTechnical and advisory councilOutreach and communications
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Major Supporting StudiesMajor Supporting StudiesPHASE I Ocean SAMPPHASE I Ocean SAMP
Refinement of Site SelectionWind, wave, and surge analysisMarine transportation (AIS)
Wind Farm Technology AssessmentGeology (surficial and sub-bottom), sea bedmappingPhysical oceanography
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US Army Corp Wave InformationUS Army Corp Wave Information
StudyStudy HindcastHindcast LocationsLocations
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Extreme Wave Heights and Periods ( 1/100yr)Extreme Wave Heights and Periods ( 1/100yr)
9 m, 15.6 sec
8.5 m, 14.5 sec4 m, 15 sec
8 m, 14.5 sec ??
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NOAA ENC BathymetryNOAA ENC Bathymetry --Wave Prediction 1/100yr)Wave Prediction 1/100yr)
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AIS Tracks Oct 31 to Nov 26,AIS Tracks Oct 31 to Nov 26,
2007 (ASA)2007 (ASA)
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Phase IPhase I -- Ocean SAMPOcean SAMPSupporting StudiesSupporting Studies
Meteorology and air quality Noise and electromagneticSea and shore birdsMarine mammals and turtlesCultural and archeological resources
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Phase II DetailedPhase II DetailedInvestigationsInvestigations
High resolution bottomand sub-bottom mappingOcean observations:
winds, currents, andwaves
Cape WindMeteorological
Tower
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Meteorological and OceanMeteorological and OceanObservation Tower Observation Tower
Meet immediate need for wind farm sitingLong term plan operated by URI as part of the
federal initiative on Integrated Ocean ObservingSystem(IOOS) (Regional Associations, Northeastand Mid Atlantic Bight)Leverage re-location of GoMOOS buoy
(Coordination with NOAA Surveying Vessel)
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GoMOOSGoMOOS Buoy Relocated to RIBuoy Relocated to RI
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Ocean and MeteorologicalOcean and Meteorological
Observation Tower (Tentative site)Observation Tower (Tentative site)
* Primary Site
* Secondary Site
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Availability of SupportingAvailability of SupportingEnvironmental DataEnvironmental Data
Winds none in RI coastal waters
Waves and currents none in RI coastal watersGeological parameters limited, sampling toocoarseBirds - only coastal observations ( Sachuest and
Napatree Points), none offshoreMarine Mammals limited data, needs tosynthesizedMarine Archeological Sites few observations
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NOAA Offshore ObservationNOAA Offshore Observation
BuoysBuoys
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USGS Sediment Sample and sidescan survey locations
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USGS Sub-bottom survey locations
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Cost SummaryCost Summary -- Phase IPhase IPhase I Major Study Elements
Phase I Ocean SAMP 51.7 %*
Refinement of Siting Study 8.5 %Sea Bed Mapping 13 %Birds 17.1 %Other Supporting Studies 9.7 %
TOTAL COST -$4 M* Percent of total cost
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Cost SummaryCost Summary -- Phase IIPhase IIPhase II Detailed Site Investigations
Meteorological and oceanographic 77 %observations (Met tower)Sea bed mapping 23 %
TOTAL COST - $2.6 M
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Sources of Renewable OceanSources of Renewable OceanEnergy in Rhode IslandEnergy in Rhode Island
Malcolm L. SpauldingProfessor, Ocean Engineering
Director, Center of Excellence inUndersea Technology
University of Rhode Island Narragansett, RI 02882
Briefing to:Coastal Resources Management Council
March 11, 2008
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Sources of OffshoreSources of OffshoreRenewable EnergyRenewable Energy
Ocean Thermal Energy Conversion(OTEC)Offshore windsWavesOcean currents In stream and head (impoundment) based tidal Mean current (e.g. Gulf Stream, river flow)
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Key Issues withKey Issues with RenewablesRenewablesLow energy density, many power unitsdistributed over large areas,Intermittent power production (1/3 time for wind and waves)Connection grid
Resource use conflictsEnvironmental impacts
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ATM (2007) Offshore Wind Sites
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Summary RI Power Summary RI Power Production PotentialProduction Potential
Offshore Energy Production Potential (MW)OTEC noneIn stream tidal currents 0.01Waves
10 to 100 unit farm(s) 0.408-40.8
Winds (all sites) 685Selected short listed sites 150 - 220
Renewable Energy Goal 150
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Cost SummaryCost Summary
Cost of power production per MWhr
Winds $96 to 137
Waves* $630* Only power generator capital costs; estimated 2.5
times if all project capitals costs
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OFFSHORE WINDS!OFFSHORE WINDS!
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In Depth PresentationIn Depth Presentation
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Ocean Thermal EnergyOcean Thermal EnergyConversion (OTEC)Conversion (OTEC)
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Ocean Thermal EnergyOcean Thermal EnergyConversionConversion
Requires deep water, source of cold (deep)water and warm surface water
No deep water sites exist in RI or southern New England shelf
NO POTENTIAL FOR RI
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OCEAN CURRENTSOCEAN CURRENTS
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Ocean CurrentsOcean Currents No strong mean currents in RI or adjacentwaters
Tidal range in RI waters is modest (1 m) sono possibility for impoundmentsIn stream tidal currents typically requirecurrent speeds greater than 1.5 to 2 m/sec (3to 4 kt) to generate power (Turbine cut inspeeds 0.5 m/sec or 1kt)
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In Stream Tidal CurrentsIn Stream Tidal CurrentsTwo potential sites: Sakonnet River Bridge andWarren River (Rte 114 Bridge)Sakonnet River not viable, peak current about 1.3
m/sec, no significant power generation potentialWarren River site limited local potential
Maximum currents 2.5 m/sec (5 kt)One turbine ( 1 m diameter, 2.5 m long)
1 kW or 8.7 MWhFull build out 10 turbines
10 kW or 87 MWh
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Warren River Bridge SiteWarren River Bridge Site
* TurbineSite
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Nearby Sites for InNearby Sites for In --StreamStreamTidal Current Power Tidal Current Power
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WAVE ENERGYWAVE ENERGY
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Worldwide wave energyWorldwide wave energyhttp://www.http://www. poemsincpoemsinc .org/.org/ FAQwaveFAQwave .html.html
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RI Wave Energy SettingRI Wave Energy SettingLow wave energy density, short fetchdistances, and wind blows primarily from
westLargest (most) waves from south andsouthwestRhode and Block Island Sound waves
Mean Wave period 4.5 secMean amplitude 1.04 m
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RI Coastal Wave EnergyRI Coastal Wave EnergyEstimateEstimate
Estimate of power production potential5.7 kW/m Annual avg wave power per
m of wave front off Block Island3.4 kW/m Annual avg wave power for
waves greater than 5 sec, 0.5 m
height from southern sector( maxwave exposure) ( produce power)
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Wave Power Estimate RIWave Power Estimate RI1.36 kW/m Annual avg wave power
after adjustment for operational efficiency (40%)
40.8 kW for typical unit ( 30 m ;100ft) wide357 MWhr per year per unit(52 households) (*6909 kWhr per
household)OPERATES ONLY 37% OF THE TIMESIMILAR TO WIND TURBINES
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Wave Power Estimate RIWave Power Estimate RITypical Wave Farm in RI 10 plants
408 kW(0.408 MW) or 3.570 BWhr RI Project, 15 MW Generation Capacity, ( 6 MWactual generation), 10 units, Total capital cost -$45 M, 1. 5 MW per unit, 20 yr life span (52.560BWhrs per yr)Cost* = $42.80 per MWhr ( **Est -$107 per MWHr)
Estimated cost using RI wave dataCost * = $630 per MWhr (**Est. $1575 per MWhr) Difference --- 15
*Considering facilities costs only ** Total capital
cost =2.5 x facility cost
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OFFSHORE WINDSOFFSHORE WINDS
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Wind Resource in the NortheastWind Resource in the Northeast
Source: AWSSource: AWS TruewindsTruewinds
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ATM (2007) Offshore Wind Sites
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ATM(2007) Potential Energy Estimates
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ATM(2007) cost summaryATM(2007) cost summary
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Wind Energy SummaryWind Energy SummaryAll offshore areas
685 MW
Sub-areasJ, K - 220 MWE, H - 140 MWH, K - 187 MW
Renewable Energy Goal 150 MWCost Range - $96 to 137 MWhr
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Summary Power ProductionSummary Power ProductionPotentialPotential
Offshore Energy Production Potential (MW)OTEC none
In stream tidal currents 0.01Waves
10 to 100 unit farm(s) 0.408-40.8
Winds (all sites) 685Selected short listed sites 150 - 220
Renewable Energy Goal 150
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Cost SummaryCost Summary
Cost of power production per MWhr
Winds $96 to 137Waves* $630
* Only capital costs for generator
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OFFSHORE WINDS!OFFSHORE WINDS!
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Turbines at one of Britains offshore wind farmsat Caister on Sea produce electric power.