Offshore Wind

Harnessing wind energy in offshore environments.

Similar to land-based wind technologies, offshore wind uses turbines to generate energy which is delivered to the shore via an export cable. A main advantage of offshore wind is the stronger and more consistent winds that blow offshore, allowing the use of larger turbine blades. The development of offshore wind in Europe and Asia has preceded development activities in other parts of the world. However, several projects in the United States are currently underway. While the most common offshore wind energy technology is a three-bladed horizontal axis turbine, there are a variety of foundation types which can support the deployment of devices in a range of aquatic environments – shallow nearshore habitats to deeper offshore environments.

 

Monopile Foundation

 

Monopile foundations are used at shallow depths (0-30 m) and consist of a pile being driven to varying depths into the seabed (10-40 m) depending on the soil conditions. The pile-driving construction process is an environmental concern as the noise produced is incredibly loud and propagates far in the water, even after mitigation strategies such as bubble shields, slow start, and acoustic cladding are employed. As with land-based wind energy, collision risk with birds and bats is a major concern, though the impact is more difficult to quantify because carcasses that provide evidence of collisions become lost at sea. While the footprint of offshore wind energy is relatively small, it may still cause scouring. As with all electricity generation, there is a slight concern that electromagnetic fields generated by power cables may affect animals that use Earth's natural magnetic field for orientation, navigation, and hunting. Likewise, chemicals such as anti-corrosion paint and small amounts of oil and grease may enter the waterbody during spills, though some turbine designs do not require lubrication. Artificial reefing is likely to occur around wind farms as the new hard substrate provides protection and attracts colonizing invertebrates.

Tripod Fixed Bottom

 

Tripod fixed bottom foundations are used at transitional depth (20-80 m) and consist of three legs connecting to a central shaft that supports the turbine base. Each leg has a pile driven into the seabed creating a wide foundation that allows for the piles to be placed at a shallower depth in the seabed. The environmental effects are very similar to monopiles, except that the footprint is a little larger.

Gravity Foundation

 

Gravity foundations are used at shallow depths (0-30 m) and consist of a large and heavy base constructed of steel or concrete to rest on the seabed. The footprint is relatively large and may cause scouring, artificial reefing, or physical destruction of habitats upon introduction. Otherwise, the environmental effects are similar to monopiles.

Gravity Tripod

 

Gravity tripod foundations are used at transitional depths (10-40 m) and consist of two heavy concrete structures connected by three legs where one structure sits on the seabed while the other sits above the water. Very few offshore windfarms are currently using this foundation. The environmental concerns are identical to those of gravity foundations, though the scouring effect may be less significant depending on the design.

Floating Structure

 

Floating structure foundations are used at deep depths (40-900 m) and consist of a balanced floating structure moored to the seabed with fixed cables. The floating structure may be stabilized using buoyancy, mooring lines, or a ballast. The mooring lines may cause minor scouring or pose a risk of collision, but the turbine foundation is mostly located in the upper layer of the water column where there tend to be less organisms.

Total Results: 1377
Titlesort descending Author Date Type of Content Technology Type Stressor Receptor
Understanding the Potential for Marine Megafauna Entanglement Risk from Marine Renewable Energy Developments Benjamins, S., et al. January 2014 Report Marine Energy general, Wind Energy general, Offshore Wind Static Device Marine Mammals, Cetaceans
Understanding the Role of Offshore Structures in Managing Potential Watersipora Invasions Page, H., et al. February 2019 Report Marine Energy general, Wind Energy general, Offshore Wind Static Device Invertebrates
Underwater Acoustic Modeling Report - Virginia Offshore Wind Technology Advancement Project (VOWTAP) Tetra Tech December 2013 Report Wind Energy general, Offshore Wind Noise
Underwater construction and operational noise at alpha ventus Betke, K. January 2014 Book Chapter Wind Energy general, Offshore Wind Noise Marine Mammals
Underwater Mach Wave Radiation from Impact Pile Driving: Theory and Observation Reinhall, P., Dahl, P. September 2011 Journal Article Wind Energy general, Offshore Wind Noise
Underwater Noise Emissions from Offshore Wind Turbines Betke, K., Schultz-von Glahn, M., Matuschek, R. January 2004 Report Wind Energy general, Offshore Wind Noise
Underwater Noise from Construction and Operation of Offshore Wind Farms Tougaard, J., Madsen, P., Wahlberg, M. January 2008 Journal Article Wind Energy general, Offshore Wind Noise
Underwater Noise From Three Types Of Offshore Wind Turbines: Estimation Of Impact Zones For Harbor Porpoises And Harbor Seals Tougaard, J., Henriksen, O., Miller, L. January 2009 Journal Article Wind Energy general, Offshore Wind Noise Marine Mammals, Pinnipeds
Underwater Noise Generated from Marine Piling Robinson, S., Theobald, P., Lepper, P. January 2013 Conference Paper Wind Energy general, Offshore Wind Noise
Underwater noise levels of pile-driving in a New Zealand harbour, and the potential impacts on endangered Hector's dolphins Leunissen, E., Dawson, S. October 2018 Journal Article Wind Energy general, Offshore Wind Noise Marine Mammals, Cetaceans
Underwater Noise Measurements, Analysis, and Predictions Degn, U. March 2000 Report Wind Energy general, Offshore Wind Noise
Underwater Noise Modelling for Environmental Impact Assessment Farcas, A., Thompson, P., Merchant, N. February 2016 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Noise Human Dimensions, Environmental Impact Assessment
Underwater Noise Produced by the Piling Activities During the Construction of the Belwind Offshore Wind Farm (Bligh Bank, Belgian Marine Waters) Norro, A., et al. January 2010 Book Chapter Wind Energy general, Offshore Wind Noise
Underwater Radiated Noise Due to the Piling for the Q7 Offshore Wind Park de Jong, C., Ainslie, M. June 2008 Report Wind Energy general, Offshore Wind Noise Marine Mammals
Unforeseen Responses of a Breeding Seabird to the Construction of an Offshore Wind Farm Harwood, A., et al. February 2017 Book Chapter Wind Energy general, Offshore Wind Static Device Birds, Seabirds
Unstructured Grid Modelling of Offshore Wind Farm Impacts on Seasonally Stratified Shelf Seas Cazenave, P., Torres, R., Allen, J. June 2016 Journal Article Wind Energy general, Offshore Wind Static Device Nearfield Habitat
Updated Summary of Knowledge: Selected Areas of the Pacific Coast Kaplan, B., et al. July 2010 Report Marine Energy general, Wind Energy general, Offshore Wind Invertebrates, Birds, Ecosystem, Fish, Marine Mammals, Reptiles, Human Dimensions
Upper Ocean Response to Large Wind Farm Effect in the Presence of Surface Gravity Waves Paskyabi, M., Fer, I. January 2012 Journal Article Wind Energy general, Offshore Wind Energy Removal, Static Device Nearfield Habitat
Upscaling positive effects of scour protection in offshore wind farms Coolen, J., et al. January 2019 Report Wind Energy general, Offshore Wind Static Device Invertebrates, Fish, Nearfield Habitat
US Department of Energy Announces Funding for Three Pioneering Offshore Wind Projects Alicia Gorton June 2014 Blog Article Offshore Wind
Use of Aerial Surveys to Detect Bird Displacement by Offshore Windfarms Maclean, I., et al. October 2006 Report Wind Energy general, Offshore Wind Static Device Birds, Seabirds, Waterfowl
Use of an optical rangefinder to assess the reliability of seabird flight heights from boat‐based surveyors: implications for collision risk at offshore wind farms Harwood, A., Perrow, M., Berridge, R. October 2018 Journal Article Wind Energy general, Offshore Wind Dynamic Device Birds, Seabirds
Use of Anthropogenic Sea Floor Structures by Australian Fur Seals: Potential Positive Ecological Impacts of Marine Industrial Development? Arnould, J., et al. July 2015 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Static Device Marine Mammals, Pinnipeds
Use of Baited Remote Underwater Video (BRUV) and Motion Analysis for Studying the Impacts of Underwater Noise upon Free Ranging Fish and Implications for Marine Energy Management Roberts, L., Perez-Dominguez, R., Elliott, M. November 2016 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Noise Fish
Use of High Resolution Sonar for Near-Turbine Fish Observations (DIDSON) - WeSea 2007-002 Couperus, B., et al. November 2010 Report Wind Energy general, Offshore Wind Static Device Fish
Use of Population Viability Analysis (PVA) to Assess the Potential for Long Term Impacts from Piling Noise on Marine Mammal Populations - A Case Study from the Scottish East Coast De Silva, R., et al. May 2014 Presentation Wind Energy general, Offshore Wind Noise Marine Mammals, Pinnipeds
User Guide for the MRSea Package: Marine Renewables Strategic Environmental Assessment Scott-Hayward, L., et al. October 2013 Report Marine Energy general, Wind Energy general, Offshore Wind Birds, Marine Mammals
Using a Collision Risk Model to Assess Bird Collision Risks for Offshore Wind Farms Band, B. March 2012 Report Wind Energy general, Offshore Wind Dynamic Device Birds
Using a Shore Bird (Red Knot) Fitted with Geolocators to Evaluate a Conceptual Risk Model Focusing on Offshore Wind Burger, J., et al. July 2012 Journal Article Wind Energy general, Offshore Wind Static Device Birds
Utgrunden Offshore Wind Farm Measurements of Underwater Noise Ingemansson Technology June 2003 Report Wind Energy general, Offshore Wind Noise
Validation of Finite Element Computations for the Quantitative Prediction of Underwater Noise from Impact Pile Driving Zampolli, M., et al. January 2013 Journal Article Wind Energy general, Offshore Wind Noise
Valuation of Ecological and Amenity Impacts of an Offshore Windfarm as a Factor in Marine Planning Börger, T., Hooper, T., Austen, M. December 2015 Journal Article Wind Energy general, Offshore Wind Ecosystem, Human Dimensions
Valuing Public Preferences for Offshore Wind Power: A Choice Experimental Approach Krueger, A. September 2007 Thesis Wind Energy general, Offshore Wind Human Dimensions
Virginia Offshore Wind Technology Advancement Project on the Atlantic Outer Continental Shelf Offshore Virginia Environmental Assessment Bureau of Ocean Energy Management, Office of Renewable Energy Programs December 2014 Report Wind Energy general, Offshore Wind Human Dimensions, Environmental Impact Assessment
Visual and Radar Observations of Birds in Relation to Collision Risk at the Horns Rev Offshore Wind Farm Christensen, T., et al. January 2004 Report Wind Energy general, Offshore Wind Dynamic Device Birds, Seabirds
Visual assessment of off-shore wind turbines: The influence of distance, contrast, movement and social variables Bishop, I., Miller, D. April 2007 Journal Article Wind Energy general, Offshore Wind
Visual Tracking From a Rigid-Hulled Inflatable Boat to Determine Foraging Movements of Breeding Terns Perrow, M., Gilroy, J., Skeate, E. February 2011 Journal Article Wind Energy general, Offshore Wind Dynamic Device Birds, Seabirds
Vitamine ENA: A framework for the development of ecosystem-based indicators for decision makers Safi, G., et al. May 2019 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Ecosystem, Human Dimensions, Environmental Impact Assessment
Vulnerability of Scottish Seabirds to Offshore Wind Turbines Furness, B., Wade, H. February 2012 Report Wind Energy general, Offshore Wind Dynamic Device, Static Device Birds, Raptors, Seabirds, Waterfowl
Wake Effects of Large Offshore Wind Farms Identified from Satellite SAR Christiansen, M., Hasager, C. October 2005 Journal Article Wind Energy general, Offshore Wind Energy Removal Farfield Environment
Wake Effects on Middelgrund Windfarm Jørgensen, H., Frandsen, S., Vølund, P. July 2003 Report Wind Energy general, Offshore Wind Energy Removal Nearfield Habitat
Wave Climate and Coastline Response of the Dutch Coast: Investigating the effect of large-scale offshore wind farm developments in the North Sea Ballas, G. November 2018 Thesis Wind Energy general, Offshore Wind Energy Removal Farfield Environment, Nearfield Habitat
Weighing Natural Variability and Anthropogenic Impacts: A Case Study of Demersal Fish and Epibenthic Communities in the Belgian Part of the North Sea De Backer, A., et al. January 2010 Report Wind Energy general, Offshore Wind Invertebrates, Fish
West Coast Environmental Protocols Framework: Baseline and Monitoring Studies Klure, J., et al. September 2012 Report Marine Energy general, Tidal, Wave, Wind Energy general, Offshore Wind Dynamic Device, EMF, Energy Removal, Noise, Static Device Invertebrates, Birds, Fish, Marine Mammals, Nearfield Habitat, Reptiles
West Coast Organization Channels Energy for Marine Renewables Marisa McNatt and Matthew Sanders (POET) November 2018 Blog Article Marine Energy general, Tidal, Wave, Wind Energy general, Offshore Wind
What Drives Attitudes towards Marine Renewable Energy Development in Island Communities in the UK? de Groot, J., Bailey, I. April 2016 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Human Dimensions, Stakeholder Engagement
What is the Global Potential for Renewable Energy? Moriarty, P., Honnery, D. January 2012 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Human Dimensions
What is the Source Level of Pile-Driving Noise in Water? Ainslie, M., et al. January 2012 Book Chapter Wind Energy general, Offshore Wind Noise
Where Are All the People? A Study on the Integration of Socioeconomics and Marine Conservation Planning Feldman, L. May 2009 Thesis Marine Energy general, Wind Energy general, Offshore Wind Human Dimensions
Who cares? European attitudes towards marine and coastal environments Potts, T., et al. October 2016 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Human Dimensions, Aesthetics, Fishing, Stakeholder Engagement
Whooper Swan Cygnus cygnus Migration in Relation to Offshore Wind Farms Griffin, L., Rees, E., Hughes, B. October 2010 Conference Paper Wind Energy general, Offshore Wind Dynamic Device, Static Device Birds, Waterfowl
Why does the offshore wind industry need standardized HSE management systems? An evidence from Denmark Ahsan, D., et al. June 2019 Journal Article Wind Energy general, Offshore Wind Human Dimensions, Legal and Policy, Stakeholder Engagement
Why Offshore Wind Energy? Esteban, M., et al. February 2011 Journal Article Wind Energy general, Offshore Wind
Will Communities "Open-Up" to Offshore Wind? Lessons Learned from New England Islands in the United States Klain, S., et al. December 2017 Journal Article Wind Energy general, Offshore Wind Human Dimensions
Will Offshore Energy Face "Fair Winds and Following Seas"?: Understanding the Factors Influencing Offshore Wind Acceptance Teisl, M., et al. January 2015 Journal Article Wind Energy general, Offshore Wind Human Dimensions, Stakeholder Engagement
Wind and Energy Wildlife Impacts Bispo, R., et al. March 2019 Book Wind Energy general, Land-Based Wind, Offshore Wind
Wind and Wildlife: Siting Issues and Challenges Walker, R., Swift, A. May 2015 Book Chapter Wind Energy general, Land-Based Wind, Offshore Wind Bats, Birds, Fish, Terrestrial Mammals
Wind Energy Development and its Environmental Impact: A Review Leung, D., Yang, Y. January 2012 Journal Article Wind Energy general, Offshore Wind Energy Removal Farfield Environment, Nearfield Habitat
Wind Energy Engineering: A Handbook for Onshore and Offshore Wind Turbines Letcher, T. May 2017 Book Wind Energy general, Land-Based Wind, Offshore Wind
Wind Energy Essentials: Societal, Economic, and Environmental Impacts Walker, R., Swift, A. May 2015 Book Wind Energy general, Land-Based Wind, Offshore Wind
Wind Energy Systems: Environmental Aspects and Impacts Manwell, J., McGowan, J., Rogers, A. January 2009 Book Chapter Wind Energy general, Offshore Wind Dynamic Device, Static Device Bats, Birds, Nearfield Habitat, Human Dimensions
Wind Energy's Impact on Aviation, Radar, and Telecommunications Walker, R., Swift, A. May 2015 Book Chapter Wind Energy general, Land-Based Wind, Offshore Wind EMF Human Dimensions, Navigation
Wind Energy's Subtle Effect - Habitat Fragmentation Pruett, J. May 2013 Presentation Wind Energy general, Offshore Wind Static Device Bats, Birds
Wind Farm - Kriegers Flak: Environmental Impact Assessment Sweden Offshore Wind AB January 2007 Report Offshore Wind Human Dimensions, Environmental Impact Assessment
Wind Farm Related Mortality Among Avian Migrants - A Remote Sensing Study and Model Analysis Desholm, M. August 2006 Thesis Wind Energy general, Offshore Wind Dynamic Device Birds
Wind Farms and Birds: An Updated Analysis of the Effects of Wind Farms on Birds, and Best Practice Guidance on Integrated Planning and Impact Assessment Gove, B., et al. September 2013 Report Wind Energy general, Land-Based Wind, Offshore Wind Birds
Wind in our Sails - The Coming of Europe's Offshore Wind Energy Industry European Wind Energy Association November 2011 Report Wind Energy general, Offshore Wind Human Dimensions
Wind in the sails or choppy seas?: People-place relations, aesthetics and public support for the United States’ first offshore wind project Firestone, J., et al. June 2018 Journal Article Wind Energy general, Offshore Wind Human Dimensions, Aesthetics
Wind Turbine Underwater Noise and Marine Mammals: Implications of Current Knowledge and Data Needs Madsen, P., et al. March 2006 Journal Article Wind Energy general, Offshore Wind Noise Marine Mammals
Wind Turbines and Coastal Recreation Demand Landry, C., et al. January 2012 Journal Article Wind Energy general, Offshore Wind Static Device Human Dimensions, Recreation
Wind turbines cause chronic stress in badgers (Meles meles) in Great Britain Agnew, R., Smith, V., Fowkes, R. July 2016 Journal Article Wind Energy general, Offshore Wind Noise Terrestrial Mammals
Windpower and Grey Seals: An Impact Assessment of Potential Effects by Sea-Based Windpower Plants on a Local Seal Population Sundberg, J., Söderman, M. December 1999 Report Wind Energy general, Offshore Wind Marine Mammals, Pinnipeds
Winds of change – Predicting water-based recreationists' support and opposition for offshore wind energy development in the Great Lakes Ferguson, M., et al. February 2019 Journal Article Wind Energy general, Offshore Wind Human Dimensions, Recreation
Worldwide Synthesis and Analysis of Existing Information Regarding Environmental Effects of Alternative Energy Uses on the Outer Continental Shelf Michel, J., et al. July 2007 Report Marine Energy general, Ocean Current, OTEC, Wave, Wind Energy general, Offshore Wind Dynamic Device, Static Device Invertebrates, Birds, Farfield Environment, Fish, Marine Mammals, Reptiles, Human Dimensions
WT-Bird: Bird Collision Recording for Offshore Wind Farms Wiggelinkhuizen, E., et al. November 2004 Conference Paper Wind Energy general, Offshore Wind Dynamic Device Birds
Year-Round Spatiotemporal Distribution of Harbour Porpoises Within and Around the Maryland Wind Energy Area Wingfield, J., et al. May 2017 Journal Article Wind Energy general, Offshore Wind Static Device Marine Mammals
Zooplankton Community Responses and the Relation to Environmental Factors from Established Offshore Wind Farms within the Rudong Coastal Area of China Wang, T., et al. July 2018 Journal Article Wind Energy general, Offshore Wind Static Device Nearfield Habitat

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