Floating Offshore Wind

Capturing energy from offshore wind using floating foundations.

Offshore wind energy technologies harness kinetic energy from the wind to generate energy and transport that energy back to shore via a subsea export cable. The main advantage of offshore wind energy is access to stronger and more consistent winds, allowing for the use of larger turbines. 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. Several floating offshore wind energy demonstrations exist throughout the world, but the technology is yet to be widely deployed.

Floating foundations are used at deep depths (40->1000m) and consist of a balanced floating substructure moored to the seabed with fixed cables. The substructure may be stabilized using buoyancy, mooring lines, or a ballast. Several designs for floating offshore wind substructures currently exist for various depth ranges, including barges, semi-submersibles, tension leg platforms, and single point anchorage buoys. These substructures are connected to one another via inter-array cables, which transport electricity generated from the turbine to floating offshore substations. High voltage export cables then transport the energy to shore. To better understand floating offshore wind, explore these videos from RWE.

The environmental concerns associated with offshore wind farms vary with foundation type. In general, collision risk with birds and bats is a major concern, though the impact is more difficult to quantify offshore because carcasses that provide evidence of collisions become lost at sea. 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. Although pile driving is one of the main concerns surrounding fixed offshore wind energy, floating projects can be constructed onshore and transported out to sea, reducing the impacts from construction-related noise and vessels. Floating foundation’s mooring lines may cause minor scouring or pose a risk of collision or entrapment, but the turbine foundation is mostly located in the upper layer of the water column where there tend to be less organisms.

Photo Credit: Joshua Bauer, NREL

Marine and Wind Energy Environmental Documents

Tethys is a knowledge hub that contains documents on the environmental effects of wind and marine energy. The table below contains all of the documents in the Tethys Knowledge Base associated with Floating Offshore Wind.

Total: 779

Searches title and abstract.
Title Author Date Content Type Technology Stressor Receptor
Offshore Energy Strategic Environmental Assessment Review and Update of Seascape and Visual Buffer study for Offshore Wind farms White, S., Michaels, S., King, H. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Habitat Change Human Dimensions, Visual Impacts
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Winter 2018-2019 Target Extraction Summary Report Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Strategic Plan to Protect California’s Coast and Ocean 2020–2025 Crowfoot, W., Blumenfeld, J., Yee, B. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Human Dimensions, Stakeholder Engagement
The global climate value of offshore wind energy Cranmer, A., Baker, E. Journal Article Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Human Dimensions, Social & Economic Data
Site‐specific life cycle assessment of a pilot floating offshore wind farm based on suppliers’ data and geo‐located wind data Poujol, B., Prieur-Vernat, A., Dubranna, J. Journal Article Wind Energy, Floating Offshore Wind Human Dimensions, Life Cycle Assessment
Pan American Marine Energy Conference 2020 Book of Abstracts Rojas M., J., Meza, C. Conference Paper Marine Energy, Ocean Current, OTEC, Salinity Gradient, Tidal, Wave, Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Options for biodiversity enhancement in offshore wind farms Bureau Waardenburg bv Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Habitat Change Ecosystem Processes, Fish, Invertebrates, Human Dimensions
Ecological impact of decommissioning offshore wind farms Teunis, M., Collier, M., Bakker, E. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Chemicals, Collision, Displacement, Habitat Change, Lighting, Noise Bats, Birds, Seabirds, Fish, Demersal Fish, Pelagic Fish, Invertebrates, Marine Mammals, Cetaceans, Pinnipeds, Physical Environment, Sediment Transport, Water Quality, Human Dimensions, Fisheries
Draft Sectoral Marine Plan for Offshore Wind Energy consultation APS Group Scotland Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Attraction, Avoidance, Changes in Flow, Chemicals, Collision, Displacement, EMF, Entanglement, Habitat Change, Lighting, Noise Birds, Ecosystem Processes, Fish, Invertebrates, Marine Mammals, Physical Environment, Human Dimensions, Environmental Impact Assessment, Fisheries, Legal & Policy, Marine Spatial Planning, Navigation, Recreation & Tourism, Social & Economic Data, Stakeholder Engagement, Visual Impacts
Methodology for modeling and service life monitoring of mooring lines of floating wind turbines Pham, H., Schoefs, F., Cartraud, P. Journal Article Wind Energy, Floating Offshore Wind Habitat Change Fish, Invertebrates
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Spring 2019 Taxonomic Analysis Summary Report Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Project Environmental Monitoring Plan: Kincardine Offshore Windfarm Project October 2019 Kincardine Offshore Wind Ltd Report Wind Energy, Floating Offshore Wind Birds, Fish, Marine Mammals
Simply Blue Energy 1 Floating Offshore Wind Farm: Environmental Impact Assessment Scoping Report MarineSpace Ltd Report Wind Energy, Floating Offshore Wind Human Dimensions, Environmental Impact Assessment
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Spring 2019 Target Extraction Summary Report Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Offshore flat oyster pilot Luchterduinen wind farm: Results campaign 2 (July 2019) and lessons learned Didderen, K., Bergsma, J., Kamermans, P. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Invertebrates
Wildlife and Wind Farms - Conflicts and Solutions, Volume 4. Offshore: Monitoring and Mitigation Perrow, M. Book Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Collision, Noise Bats, Birds, Seabirds, Fish, Invertebrates, Marine Mammals, Human Dimensions, Marine Spatial Planning
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Fall 2018 Taxonomic Analysis Summary Report Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Fall 2018 Target Extraction Summary Report Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Europe, China and the United States: Three different approaches to the development of offshore wind energy deCastro, M., Salvador, S., Gomez-Gesteira, M. Journal Article Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Human Dimensions, Legal & Policy
PHAROS4MPAs: A Review of Solutions to Avoid and Mitigate Environmental Impacts of Offshore Windfarms Defingou, M., Bils, F., Horchler, B. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Collision, EMF, Habitat Change, Lighting, Noise Birds, Fish, Marine Mammals, Human Dimensions, Fisheries, Marine Spatial Planning
Guidelines for Information Requirements for a Renewable Energy Site Assessment Plan (SAP) BOEM Office of Renewable Energy Programs Guidance Marine Energy, Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Human Dimensions, Legal & Policy
Net Zero - The UK's Contribution to Stopping Global Warming: Committee on Climate Change Report Smart, G. Report Marine Energy, Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Human Dimensions, Social & Economic Data
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Summary of Spring 2019 Digital Survey #12 Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
PivotBuoy An Advanced System for Cost-effective and Reliable Mooring, Connection, Installation & Operation of Floating Wind D4.1: Test site environmental conditions Oceanic Platform of the Canary Islands (PLOCAN) Report Wind Energy, Floating Offshore Wind Noise Physical Environment, Water Quality
Keeping the Noise Down: Approaches to the Mitigation and Regulation of Human-Caused Ocean Noise Weilgart, L. Book Chapter Marine Energy, Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Noise
Wozep Ecological Programme: Tussenstand Wozep 2019 Offshore Wind Ecological Programme (Wozep) Presentation Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Habitat Change Bats, Birds
Review of the potential of seabird colony monitoring to inform monitoring programmes for consented offshore wind farm projects Cook, A., Humphreys, E., Robinson, R. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Birds, Seabirds
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Summer 2018 Target Extraction Summary Report Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Tracking Offshore Occurrence of Common Terns, Endangered Roseate Terns, and Threatened Piping Plovers with VHF Arrays Loring, P., Paton, P., McLaren, J. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Collision, Displacement Birds, Seabirds, Shorebirds
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Summer 2018 Taxonomic Analysis Summary Report Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind
Noise Impact Assessment Hywind Tampen Weissenberger, J. Report Wind Energy, Floating Offshore Wind Noise Ecosystem Processes, Human Dimensions, Environmental Impact Assessment
Floating Offshore Wind Energy Technology: Innovation to Commercialization Northeastern University Conference Paper Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Attraction, Avoidance, Collision Bats, Birds
Hywind Tampen PUD del II – Konsekvensutredning Equinor Report Wind Energy, Floating Offshore Wind Habitat Change, Noise Birds, Seabirds, Marine Mammals, Human Dimensions, Environmental Impact Assessment, Fisheries
Pile Driving Noise Reduction Approaches Wochner, M. Journal Article Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Noise Marine Mammals, Reptiles
Hywind Tampen - Samfunnsmessige ringvirkninger Dale, M., Gjerde, S., Holmås, H. Report Wind Energy, Floating Offshore Wind Human Dimensions, Environmental Impact Assessment, Social & Economic Data
Life-cycle green-house gas emissions of onshore and offshore wind turbines Wang, S., Jinxiang, L. Journal Article Wind Energy, Land-Based Wind, Fixed Offshore Wind, Floating Offshore Wind Human Dimensions, Life Cycle Assessment
Ornithological and Marine Fauna Aerial Survey Results Equinor Wind US, LLC Annex I: Summer 2016 – Spring 2017 Jervis, L. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Birds, Fish, Marine Mammals, Reptiles, Sea Turtles
Assessment of the geographical potential for co-use of marine space, based on operational boundaries for Blue Growth sectors van den Burg, S., Aguilar-Manjarrez, J., Jenness, J. Journal Article Marine Energy, Tidal, Wave, Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Human Dimensions, Marine Spatial Planning
Digital Aerial Baseline Survey of Marine Wildlife in Support of Offshore Wind Energy Summary of Winter 2018-2019 Digital Survey #11 Normandeau Associates Inc Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Marine Mammals
Comments on the Call for Information and Nominations for Commercial Leasing for Wind Power Development on the Outer Continental Shelf Offshore California Aylesworth, S., Krop, L., George, G. Report Wind Energy, Fixed Offshore Wind, Floating Offshore Wind Birds, Ecosystem Processes, Fish, Marine Mammals, Reptiles, Sea Turtles
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