Tidal

Capturing tidal fluctuations with turbines, tidal barrages, or tidal lagoons.

Tidal Turbines

Land constrictions such as straits or inlets can create high velocities at specific sites, which can be captured with the use of turbines. These turbines can be horizontal, vertical, open, or ducted and are typically placed near the bottom of the water column.

The main environmental concern with tidal energy is associated with blade strike and entanglement of marine organisms as high speed water increases the risk of organisms being pushed near or through these devices. As with all offshore renewable energies, there is also a concern about how the creation of EMF and acoustic outputs may affect marine organisms. It should be noted that because these devices are in the water, the acoustic output can be greater than those created with offshore wind energy. Depending on the frequency and amplitude of sound generated by the tidal energy devices, this acoustic output can have varying effects on marine mammals (particularly those who echolocate to communicate and navigate in the marine environment such as dolphins and whales). Tidal energy removal can also cause environmental concerns such as degrading farfield water quality and disrupting sediment processes. Depending on the size of the project, these effects can range from small traces of sediment build up near the tidal device to severely affecting nearshore ecosystems and processes.

Tidal Barrage

Tidal barrages are dams built across the entrance to a bay or estuary that captures potential tidal energy with turbines similar to a conventional hydrokinetic dam. Energy is collected while the height difference on either side of the dam is greatest, at low or high tide. A minimum height fluctuation of 5 meters is required to justify the construction, so only 40 locations worldwide have been identified as feasible.

Installing a barrage may change the shoreline within the bay or estuary, affecting a large ecosystem that depends on tidal flats. Inhibiting the flow of water in and out of the bay, there may also be less flushing of the bay or estuary, causing additional turbidity (suspended solids) and less saltwater, which may result in the death of fish that act as a vital food source to birds and mammals. Migrating fish may also be unable to access breeding streams, and may attempt to pass through the turbines. The same acoustic concerns apply to tidal barrages. Decreasing shipping accessibility can become a socio-economic issue, though locks can be added to allow slow passage. However, the barrage may improve the local economy by increasing land access as a bridge. Calmer waters may also allow better recreation in the bay or estuary.

Tidal Lagoon

A newer tidal energy design option is to construct circular retaining walls embedded with turbines that can capture the potential energy of tides. The created reservoirs are similar to those of tidal barrages, except that the location is artificial and does not contain a preexisting ecosystem.

Environmentally, the main concerns are blade strike on fish attempting to enter the lagoon, acoustic output from turbines, and changes in sedimentation processes. However, all these effects are localized and do not affect the entire estuary or bay.

Total Results: 100
Title Author Project Launch Datesort ascending Type of Content Technology Type Stressor Receptor
A World First: Swansea Bay Tidal Lagoon in Review Waters, S., Aggidis, G. April 2016 Journal Article Tidal
A Scenario-Based Approach to Evaluating Potential Environmental Impacts Following a Tidal Barrage Installation Kidd, I., et al. November 2015 Journal Article Tidal Energy Removal Ecosystem
Evaluation and Comparison of the Levelized Cost of Tidal, Wave, and Offshore Wind Energy Astariz, S., Vazquez, A., Iglesias, G. October 2015 Journal Article Wave, Tidal, Offshore Wind Socio-economics
Hydrodynamic Response to Large Scale Tidal Energy Extraction Brown, A., Neill, S. September 2015 Conference Paper Tidal Energy Removal Farfield Environment
Field Testing a Full-Scale Tidal Turbine Part 2: In-Line Wake Effects Schmitt, P., et al. September 2015 Conference Paper Tidal
Field Testing a Full-Scale Tidal Turbine Part 3: Acoustic Characteristics Schmitt, P., et al. September 2015 Conference Paper Tidal Noise
Numerical Modeling of the Impact Response of Tidal Devices and Marine Mammals Grear, M., Motley, M. September 2015 Conference Paper Tidal Marine Mammals
Sediment Transport in the Pentland Firth and Impacts of Tidal Stream Energy Extraction Fairley, I., Masters, I., Karunarathna, H. September 2015 Conference Paper Tidal Energy Removal
Impact of Scaled Tidal Stream Turbine over Mobile Sediment Beds Ramírez-Mendoza, R., et al. September 2015 Conference Paper Tidal Energy Removal
Remote Detection of Sea Surface Roughness Signatures Related to Subsurface Bathymetry, Structures and Tidal Stream Turbine Wakes Bell, P., et al. September 2015 Conference Paper Tidal
Surveying Marine Mammals in Nearby Tidal Energy Development Sites: a Comparison Benjamins, S., et al. September 2015 Conference Paper Tidal Static Device Farfield Environment, Marine Mammals
Towards Acoustic Monitoring of Marine Mammals at a Tidal Turbine Site: Grand Passage, NS, Canada Malinka, C., Hay, A., Cheel, R. September 2015 Conference Paper Tidal Marine Mammals
An Integrated Solution to Real Time Marine Mammal Monitoring for Tidal Turbines Bromley, P., Boake, C., Broudic, M. September 2015 Conference Paper Tidal Static Device Marine Mammals
Confusion Reigns? A Review of Marine Megafauna Interactions with Tidal-Stream Environments Benjamins, S., et al. August 2015 Journal Article Tidal Birds, Marine Mammals
The Cumulative Impact of Tidal Stream Turbine Arrays on Sediment Transport in the Pentland Firth Fairley, I., Masters, I., Karunarathna, H. August 2015 Journal Article Tidal Energy Removal Farfield Environment
Assessing Collision Risk between Tidal Turbines and Marine Wildlife (draft) Band, W. August 2015 Report Tidal Dynamic Device
Guidance to Inform Marine Mammal Site Characterisation Requirements at Wave and Tidal Stream Energy Sites in Wales Sparling, C., et al. July 2015 Report Wave, Tidal Marine Mammals
High-Resolution Velocimetry in Energetic Tidal Currents using a Convergent-Beam Acoustic Doppler Profiler Sellar, B., Harding, S., Richmond, M. July 2015 Journal Article Tidal Energy Removal
Improving Assessments of Tidal Power Potential using Grid Refinement in the Coupled Ocean-Atmosphere-Wave-Sediment Transport Model Yang, X., Haas, K. July 2015 Journal Article Tidal Energy Removal
Hydrokinetic Turbine Models in Complex Channel Topography: Local Scour, Sediment Transport and Device Performance Hill, C., et al. July 2015 Conference Paper Tidal Energy Removal
MR7.2.1 Collision Risk: A Brief Review of Available Information on Behaviour of Mammals and Birds in High Tidal Energy Areas Onoufriou, J., Thompson, D. July 2015 Report Tidal Dynamic Device Birds, Marine Mammals
MR7.2.2 Collision Risk and Impact Study: Examination of Models for Estimating the Risk of Collisions Between Seals and Tidal Turbines Lonergan, M., Thompson, D. July 2015 Report Tidal Dynamic Device Marine Mammals
MR7.2.3 Collision Risk and Impact Study: Field Tests of Turbine Blade-Seal Carcass Collisions Thompson, D., et al. July 2015 Report Tidal Dynamic Device Marine Mammals
Tidal Resource Extraction in the Pentland Firth, UK: Potential Impacts on Flow Regime and Sediment Transport in the Inner Sound of Stroma Martin-Short, R., et al. April 2015 Journal Article Tidal Energy Removal Farfield Environment
Proceedings of the 4th Oxford Tidal Energy Workshop University of Oxford March 2015 Workshop Article Tidal
A Self-Contained Subsea Platform for Acoustic Monitoring of the Environment Around Marine Renewable Energy Devices - Field Deployments at Wave and Tidal Energy Sites in Orkney, Scotland Williamson, B., et al. March 2015 Journal Article Wave, Tidal Dynamic Device, Static Device Birds, Fish, Marine Mammals
Numerical Modeling of the Effect of Tidal Stream Turbines on the Hydrodynamics and the Sediment Transport - Application to the Alderney Race (Raz Blanchard), France Thiébot, J., de Bois, P., Guillou, S. March 2015 Journal Article Tidal Energy Removal Farfield Environment
Attitudes towards Marine Energy: Understanding the Values de Groot, J. March 2015 Thesis Wave, Tidal, Offshore Wind Socio-economics
Public Perceptions and Externalities in Tidal Stream Energy: A Valuation for Policy Making Vazquez, A., Iglesias, G. March 2015 Journal Article Tidal Socio-economics
Evaluation of Behavior and Survival of Fish Exposed to an Axial-Flow Hydrokinetic Turbine Amaral, S., et al. February 2015 Journal Article Tidal Dynamic Device Fish
Examining the Impacts of Tidal Energy Capture from an Ecosystem Services Perspective Leslie, H., Palmer, M. January 2015 Journal Article Tidal Ecosystem
Environmental Risk Evaluation System - An Approach to Ranking Risk of Ocean Energy Development on Coastal and Estuarine Environments Copping, A., et al. January 2015 Journal Article Wave, Tidal, Offshore Wind Chemicals, Dynamic Device, Energy Removal Birds, Fish, Marine Mammals
The Maine Tidal Power Initiative: Transdisciplinary Sustainability Science Research for the Responsible Development of Tidal Power Jansujwicz, J., Johnson, T. January 2015 Journal Article Tidal Socio-economics
A Modeling Study of the Potential Water Quality Impacts from In-Stream Tidal Energy Extraction Wang, T., Yang, Z., Copping, A. January 2015 Journal Article Tidal Energy Removal Nearfield Habitat
Understanding and Informing Permitting Decisions for Tidal Energy Development Using an Adaptive Management Framework Jansujwicz, J., Johnson, T. January 2015 Journal Article Tidal Socio-economics
Using Hydroacoustics to Understand Fish Presence and Vertical Distribution in a Tidally Dynamic Region Targeted for Energy Extraction Viehman, H., et al. January 2015 Journal Article Tidal Fish
Tidal Power Development in Maine: Stakeholder Identification and Perceptions of Engagement Johnson, T., Jansujwicz, J., Zydlewski, G. January 2015 Journal Article Tidal Socio-economics
Fish Interactions with a Commercial-Scale Tidal Energy Device in the Natural Environment Viehman, H., Zydlewski, G. January 2015 Journal Article Tidal Fish
Impact of Tidal-Stream Arrays in Relation to the Natural Variability of Sedimentary Processes Robins, P., Neill, S., Lewis, M. December 2014 Journal Article Tidal Energy Removal Farfield Environment
An Evaluation of the Use of Shore-Based Surveys for Estimating Spatial Overlap between Deep-Diving Seabirds and Tidal Stream Turbines Waggitt, J., Bell, P., Scott, B. December 2014 Journal Article Tidal Birds
Hydrodynamic Interactions of a Tidal Stream Turbine and Support Structure Walker, S. December 2014 Thesis Tidal Energy Removal
Estimates of Collision Risk of Harbour Porpoises and Marine Renewable Energy Devices at Sites of High Tidal-Stream Energy Wilson, B., et al. November 2014 Report Tidal Dynamic Device Marine Mammals
Assessing the Influence of Inflow Turbulence on Noise and Performance of a Tidal Turbine using Large Eddy Simulations Lloyd, T., Turnock, S., Humphrey, V. November 2014 Journal Article Tidal Noise
Simulating Blade-Strike on Fish Passing Through Marine Hydrokinetic Turbines Romero-Gomez, P., Richmond, M. November 2014 Journal Article Riverine, Tidal Dynamic Device Fish
In-Situ Ecological Interactions with a Deployed Tidal Energy Device; An Observational Pilot Study Broadhurst, M., Barr, S., Orme, D. October 2014 Journal Article Tidal Static Device Fish
Modeling of In-Stream Tidal Energy Development and its Potential Effects in Tacoma Narrows Washington USA Yang, Z., et al. October 2014 Journal Article Tidal Energy Removal Nearfield Habitat
Modelling the Far Field Hydro-Environmental Impacts of Tidal Farms - A Focus on Tidal Regime, Intertidal Zones and Flushing Nash, S., et al. October 2014 Journal Article Tidal Farfield Environment
Insights from Archaeological Analysis and Interpretation of Marine Data Sets to Inform Marine Cultural Heritage Management and Planning of Wave and Tidal Energy Development for Orkney Waters and the Pentland Firth, NE Scotland Pollard, E., et al. October 2014 Journal Article Wave, Tidal Socio-economics
Experimental Study of the Turbulence Intensity Effects on Marine Current Turbines Behaviour. Part II: Two Interacting Turbines Mycek, P., et al. August 2014 Journal Article Tidal Energy Removal Nearfield Habitat
The Effects of a Severn Barrage on Wave Conditions in the Bristol Channel Fairley, I., et al. August 2014 Journal Article Tidal Energy Removal Farfield Environment
Influence of Site Bathymetry on Tidal Resource Assessment Perez-Ortiz, A., et al. August 2014 Conference Paper Tidal
EMEC Fall of Warness Test Site: Environmental Appraisal European Marine Energy Centre August 2014 Report Tidal Benthic Invertebrates, Birds, Fish, Marine Mammals
Spatial and Temporal Benthic Species Assemblage Responses with a Deployed Marine Tidal Energy Device: A Small Scaled Study Broadhurst, M., Orme, C. August 2014 Journal Article Tidal Benthic Invertebrates, Ecosystem
Floating Vs. Bottom-Fixed Turbines for Tidal Stream Energy: A Comparative Impact Assessment Sanchez, M., et al. August 2014 Journal Article Tidal
Flocculation and Sediment Deposition in a Hypertidal Creek O'Laughlin, C., van Proosdij, D., Milligan, T. July 2014 Journal Article Tidal Energy Removal
Whale To Turbine Impact Using The GPU Based SPH-LSM Method Longshaw, S., Stansby, P., Rogers, B. June 2014 Conference Paper Tidal Dynamic Device Marine Mammals
Energy of Marine Currents in the Strait of Gibraltar and its Potential as a Renewable Energy Resource Quesada, M., et al. June 2014 Journal Article Tidal
Experimental Study of the Turbulence Intensity Effects on Marine Current Turbines Behaviour. Part I: One Single Turbine Mycek, P., et al. June 2014 Journal Article Tidal Energy Removal Nearfield Habitat
A Review of the Potential Impacts of Wave and Tidal Energy Development on Scotland's Marine Environment Aquatera Ltd June 2014 Report Wave, Tidal Nearfield Habitat
EMEC Fall of Warness Tidal Test Site: Wildlife Observations Project Annual Report Marine Scotland May 2014 Report Tidal Birds, Marine Mammals
Array Optimization for Tidal Energy Extraction in a Tidal Channel - A Numerical Modeling Analysis Yang, Z., Wang, T., Copping, A. April 2014 Conference Paper Tidal Energy Removal
Annex IV - Investigating Environmental Effects of Wave and Tidal Devices Through International Cooperation Copping, A., et al. April 2014 Conference Paper Wave, Tidal Energy Removal, Noise, Static Device Fish, Marine Mammals
Slipstream Between Marine Current Turbine and Seabed Chen, L., Lam, W. April 2014 Journal Article Riverine, Tidal Energy Removal Nearfield Habitat
Discrete Element Modeling of Blade-Strike Frequency and Survival of Fish Passing Through Hydrokinetic Turbines Romero-Gomez, P., Richmond, M. April 2014 Conference Paper Ocean Current, Tidal Dynamic Device Fish
First Interim Report of the Working Group on Marine Renewable Energy (WGMRE) International Council for the Exploration of the Sea April 2014 Report Wave, Tidal Ecosystem
Decision Support Tools for Collaborative Marine Spatial Planning: Identifying Potential Sites for Tidal Energy Devices Around the Mull of Kintyre, Scotland Janssen, R., Arciniegas, G., Alexander, K. March 2014 Journal Article Tidal Static Device Socio-economics
Southern Resident Killer Whale Strike Animation Carlson, T., et al. March 2014 Video Tidal Dynamic Device Marine Mammals
Cobscook Bay Tidal Energy Project: 2013 Environmental Monitoring Report ORPC Maine LLC March 2014 Report Tidal Dynamic Device, Energy Removal, Noise, Static Device Benthic Invertebrates, Birds, Fish, Marine Mammals, Nearfield Habitat
Strangford Lough and the SeaGen Tidal Turbine Savidge, G., et al. February 2014 Book Chapter Tidal
Flow-Noise and Turbulence in Two Tidal Channels Bassett, C., et al. February 2014 Journal Article Tidal Noise
Acoustic Monitoring of Beluga Whale Interactions with Cook Inlet Tidal Energy Project ORPC Alaska LLC February 2014 Report Tidal Static Device Marine Mammals
Maine Tidal Power Initiative: Environmental Impact Protocols for Tidal Power Peterson, M. February 2014 Report Tidal
Using a Spatial Overlap Approach to Estimate the Risk of Collisions between Deep Diving Seabirds and Tidal Stream Turbines: A Review of Potential Methods and Approaches Waggitt, J., Scott, B. February 2014 Journal Article Tidal Dynamic Device Birds
Assessment of Strike of Adult Killer Whales by an OpenHydro Tidal Turbine Blade Carlson, T., et al. January 2014 Report Tidal Dynamic Device Marine Mammals
A Diving Bird Collision Risk Assessment Framework for Tidal Turbines Grant, M., Trinder, M., Harding, N. January 2014 Report Tidal Dynamic Device Birds
Evaluation of Survival and Behavior of Fish Exposed to an Axial-Flow Hydrokinetic Turbine Amaral, S., Giza, D., McMahon, B. January 2014 Report Riverine, Ocean Current, Tidal Dynamic Device Fish
Wave and Tidal Enabling Actions Report: Consolidation of Wave and Tidal EIA / HRA Issues and Research Priorities Aquatera Ltd January 2014 Report Wave, Tidal
Humanity and the Sea: Marine Renewable Energy Technology and Environmental Interactions Shields, M., Payne, A. January 2014 Book Wave, Tidal, Offshore Wind EMF, Energy Removal, Noise, Static Device Benthic Invertebrates, Birds, Marine Mammals, Sea Turtles
Hydrokinetic Turbine Effects on Fish Swimming Behaviour Hammar, L., et al. December 2013 Journal Article Tidal Dynamic Device Fish
Using Drifting Passive Echolocation Loggers to Study Harbour Porpoises in Tidal-Stream Habitats Wilson, B., Benjamins, S., Elliot, J. December 2013 Journal Article Tidal Marine Mammals
Fairhead Tidal Environmental Impact Assessment Scoping Document McGrath, C. December 2013 Report Tidal EMF, Noise Benthic Invertebrates, Birds, Fish, Marine Mammals, Sea Turtles, Socio-economics
MaRVEN - Environmental Impacts of Noise, Vibrations and Electromagnetic Emissions from Marine Renewables Thomsen F. December 2013 Research Study Annex IV Tidal, Wave EMF, Noise Benthic Invertebrates, Birds, Fish, Marine Mammals, Sea Turtles
Estimating Effects of Tidal Power Projects and Climate Change on Threatened and Endangered Marine Species and Their Food Web Busch, S., Greene, C., Good, T. December 2013 Journal Article Tidal Ecosystem
D2.7 Tidal Measurement Best Practice Manual Elsaesser, B., et al. November 2013 Report Tidal
D2.16 Tidal Test Parameter Overview Germain, G. October 2013 Report Tidal
Diving Behaviour of Black Guillemots Cepphus grylle in the Pentland Firth, UK: Potential for Interactions with Tidal Stream Energy Developments Masden, E., Foster, S., Jackson, A. October 2013 Journal Article Tidal Dynamic Device Birds
A Political, Economic, Social, Technology, Legal and Environmental (PESTLE) Approach for Risk Identification of the Tidal Industry in the United Kingdom Kilios, A., Read, G. September 2013 Journal Article Tidal Socio-economics
Potential Effects of the Interaction Between Marine Mammals and Tidal Turbines - An Engineering and Biomechanical Analysis Carlson, T., Jepsen, R., Copping, A. September 2013 Conference Paper Tidal Dynamic Device Marine Mammals
Who Should be Afraid of a Tidal Turbine - The Good the Bad or the Ugly? Hammar, L., Ehnberg, J. September 2013 Conference Paper Tidal Dynamic Device Fish
Method for Identification of Doppler Noise Levels in Turbulent Flow Measurements Dedicated to Tidal Energy Richard, J., et al. September 2013 Conference Paper Tidal Noise
US Department of Energy (DOE) National Lab Activities in Marine Hydrokinetics: Scaled Model Testing of DOE Reference Turbines Neary, V., et al. September 2013 Conference Paper Riverine, Tidal
Numerical Modelling of the Effect of Turbines on Currents in a Tidal Channel - Tory Channel, New Zealand Plew, D., Stevens, C. September 2013 Journal Article Tidal Energy Removal Farfield Environment
The Use of Acoustic Devices to Warn Marine Mammals of Tidal-Stream Energy Devices Wilson, B., Carter, C. September 2013 Report Tidal Noise Marine Mammals
Admiralty Inlet Final Environmental Assessment Snohomish County Public Utility District No. 1 August 2013 Report Tidal Fish, Marine Mammals, Socio-economics
A 1:8.7 Scale Water Tunnel Verification & Validation of an Axial Flow Water Turbine Fontaine, A., et al. August 2013 Report Riverine, Tidal
Long-Term Multibeam Measurements Around a Tidal Turbine Test Site in Orkney, Scotland Blondel, P., Williamson, B. August 2013 Conference Paper Tidal Birds, Fish, Marine Mammals
Scoping Study: Review of Current Knowledge of Underwater Noise Emissions from Wave and Tidal Stream Energy Devices Robinson, S., Lepper, P. August 2013 Report Wave, Tidal Noise
Passive Acoustic Monitoring of Cetacean Activity Patterns and Movements in Minas Passage: Pre-Turbine Baseline Conditions Tollit, D., Redden, A. July 2013 Report Tidal Marine Mammals
Assessment of Zooplankton Injury and Mortality Associated With Underwater Turbines for Tidal Energy Production Schlezinger, D., Taylor, C., Howes, B. July 2013 Journal Article Tidal Dynamic Device Ecosystem
MR3 Methods for Tracking Fine Scale Movements of Marine Mammals around Marine Tidal Devices McConnell, B., et al. July 2013 Report Tidal Marine Mammals
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