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Responsible deployment of marine and hydrokinetic (MHK) devices in estuaries, coastal areas, and major rivers requires that biological resources and ecosystems be protected through siting and permitting (consenting) processes. Scoping appropriate deployment locations, collecting pre-installation (baseline) and post-installation data all add to the cost of developing MHK projects, and hence to…
Tidal energy is a growing area of research and development with key benefits including its location near coastal communities, minimal viewshed impacts, and uniquely high level of predictability. This research study seeks to understand perceptions of risk and benefit around tidal energy development, focusing on a proposed project in Puget Sound, WA. Grounded theory methodology is used to…
As tidal turbine deployments continue at test sites and in commercial areas, the potential risk for injury or death of marine mammals from colliding with rotating turbine blades continues to confound efficient consenting (permitting) of devices. Direct observation of collisions is technically very challenging and costly. Estimates of collision risk to date have been derived from complex…
This complete reference to marine renewable energy covers aspects of resource characterization and physical effects of harvesting the ocean’s vast and powerful resources—from wave and tidal stream to ocean current energy. Experts in each of these areas contribute their insights to provide a cohesive overview of the marine renewable energy spectrum based on theoretical, numerical modeling, and…
Responsible deployment of marine and hydrokinetic (MHK) devices in estuaries, coastal areas, and major rivers requires that biological resources and ecosystems be protected through siting and permitting (consenting) processes. Scoping appropriate deployment locations, collecting pre-installation (baseline) and post-installation data all add to the cost of developing MHK projects, and hence to…
Responsible deployment of marine and hydrokinetic (MHK) devices in estuaries, coastal areas, and major rivers requires that biological resources and ecosystems be protected through siting and permitting (consenting) processes. Scoping appropriate deployment locations, collecting pre-installation (baseline) and post-installation data all add to the cost of developing MHK projects, and hence to…
This paper presents an application of a hydrodynamic model to simulate tidal energy extraction in a tidal dominated estuary in the Pacific Northwest coast. A series of numerical experiments were carried out to simulate tidal energy extraction with different turbine array configurations, including location, spacing and array size. Preliminary model results suggest that array optimization for…
This paper presents a numerical modeling study for simulating in-stream tidal energy extraction and assessing its effects on the hydrodynamics and transport processes in a tidal channel and bay system connecting to coastal ocean. A marine and hydrokinetic (MHK) module was implemented in a three-dimensional (3-D) coastal ocean model using the momentum sink approach. The MHK model was validated…
This paper discusses the stages involved in understanding environmental impacts associated with marine energy generation devices, and describes an approach for assessing these impacts. It focusses on establishing monitoring tools and techniques for the pathways between stressors and receptors that can be transferred between locations. This highlights the difficulties in monitoring certain…
Extended ocean observation missions have been challenging to pursue due to limited energy options and the remote and extreme nature of many oceanic regions. The U.S. Department of Energy has funded the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) to explore the energy needs for a set of ocean observation end uses to understand how marine…
As marine renewable energy technology is adapted or designed for Blue Economy end-uses, challenges unique to operation at sea and in remote coastal areas must be addressed to meet demands distinct from utility grid electricity generation. Foundational research and development with this end goal is conducted to broadly enable the initiative of Powering the Blue Economy. Determination of…
On behalf of Ocean Energy Systems (OES) and the US Department of Energy, the PRIMRE (Portal and Repository for Information on Marine Renewable Energy) team held an international workshop to explore the potential for sharing data on marine energy. The workshop was held online, hosted by the three US national laboratories that make up the PRIMRE team [Pacific Northwest National Laboratory (PNNL…
The Reference Model Project (RMP),sponsored by the U.S. Department of Energy’s
(DOE) Wind and Water Power Technologies Program (WWPTP) within the Office of Energy Efficiency & Renewable Energy (EERE), was a multi-year effort that launched six open-source MHK technology point designs as referencemodels to benchmark performance and costs.Open-source products developed by the…The rapid growth of renewable offshore energy development has raised concerns that underwater noise from construction and operation of offshore devices may interfere with communication of marine animals. An underwater sound model was developed to simulate sound propagation from marine and hydrokinetic energy (MHK) devices or offshore wind (OSW) energy platforms. Finite difference methods were…
The Marine Renewable Energy (MRE) industry is in the early stages of development corresponding to low technology readiness levels (TRLs) where the ability of the MRE community (developers, researchers, academics, stakeholders, investors, and regulators) to work together to share knowledge, experience, and lessons learned is critical to the advancement of the entire MRE industry. Through…
Energy systems generating power from ocean waves, currents, tides, and thermal and salinity gradients are being developed to power oceanographic instrumentation and autonomous vehicles in Earth’s oceans. Exploration missions enabled or extended with in-situ energy harvesting on Earth may be similar to those on extra-terrestrial ocean worlds including mapping, biogeochemical sampling, acoustic…
The field of marine and hydrokinetic energy(or marine renewable energy) includes technologies used to convert the energy of waves, tides, currents and ocean thermal gradients primarily into electricity. Compared to traditional energy generation sources, and more established renewables (such as wind and solar), marine and hydrokinetic energy is in the early stages of development(corresponding…
The sharing of knowledge, experience, and lessons learned facilitates solving common problems and accelerating the development of the MRE industry. In order to increase the dissemination of such information, the US Department of Energy, through its national laboratories has engaged the international MRE community to understand online information needs. Six thematic needs were determined:…
The Reference Model Project, supported by the U.S. Department of Energy, was developed to provide publically available technical and economic benchmarks for a variety of marine energy converters. The methodology to achieve these benchmarks is to develop public domain designs that incorporate power performance estimates, structural models, anchor and mooring designs, power conversion chain…
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