Summary prepared by Richard Dart for OREC

Challenges & GapsGoal: Identify challenges and gaps for

offshore renewables to further knowledge and develop a tactical plan for offshore deployment

What is it?The following is a list of challenges and gaps

from various points of view.The challenges and gaps were developed by

experts from industry, academia and government

Energy Projections & Performance CHALLENGESTemporal/spatial variability of resourcesLack of data Model validationInstrumentation including remote sensingData and modeling (extreme events, hurricanes etc)Uncertainty/ data quality

Knowledge/RequirementsAccurate characterization of wake lossesDynamic info system for sitting and array

designHomogenous baseline data before and after

deployments

Knowledge/RequirementsIntegrated marine data sets (atmosphere and

ocean)Enhanced data managements and sharing

methods (particularly including the private sector)

GAPSMetocean profiles to 200M at relevant

locations including horizontal variabilityNew robust remote sensing technologiesCentralized metocean dataInternational collaborations

GAPSDatabase for extreme eventsEnhanced IEC standards for large systems

and offshore applicationsAir-Sea coupling physics (with waves)Connections between geophysical conditions

and operational loss factors

Operations Planning & Sight SafetyCHALLENGES:Operations and maintenance Extreme event responsSafety (public and operational)Installation and constructionMonitoring/current

ChallengesFuture (next hour to next decade predictions)Adapt to offshore environment ( wind chill)

GAPS & CONCERNSScour/bottom typeLightningAir/Precipitation

FACILITY DESIGN: CHALLENGESDesign for extreme eventsLack of guidance/standardization

methodology for determining site specific design conditions

Validation of modelsReducing uncertainties-both investment and

environmental risks

CHALLENGESKeeping devices in the waterCosts and availibilty of material and feasible

designs

GAPSCommon dataValidation of remote sensing technologies for

financing purposesA complete wind solar profileArray simulation capabilities needed to

optimize facility layout

GAPSHigh fidelity structural & aerodynamic device

simulation capabilities are needed More observation for site characterizations

FORECASTING:CHALLENGESLack of good data for wind and wave

couplingNo real time financial incentive to get

better/longer dataNo real info on what the industry needsLack of public/private interactionData sharing across the industry

GAPSHigh performance computingData on ocean temperature,salinity,

density,waves, currents

TECHNOLOGY DESIGN & VALIDATION

CHALLENGES:Cost competitive designsReliable/durable technologies