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The Knowledge Base provides access to information about technical and engineering aspects of marine energy. Relevant documents from around the world are compiled into a user-friendly table that displays all content available in Tethys Engineering. Results can be narrowed using the keyword filters on the right, or with search terms entered in the text box, including…

The Map Viewer provides a spatial view of information about technical and engineering aspects of marine renewable energy. Documents associated with a geographic location are compiled into an interactive map with panning, zooming, clustering, and filtering. Results can be narrowed using the keyword filters on the right, or with search terms entered in the text box. Content is clustered together…

This list compiles and provides access to external databases. While the respective scopes of each of the databases are varied, all convey information relevant to marine energy. The list of databases is not exhaustive and will be updated as needed. If you have corrections or suggestions, please email tethys@pnnl.gov.…

This list compiles organizations from around the world that are involved in research pertaining to marine energy development. Clicking on the organization will direct you to a page which includes additional information on the organization as well as a list of all documents in Tethys Engineering affiliated with the organization. The organizations list is not exhaustive and will be updated as…

The Event Calendar highlights key events from around the world related to marine energy, including conferences, workshops, webinars, and more. Clicking on an event will show more information and link to the event organizer. While some of these events are hosted by Tethys Engineering, the majority are not, so queries about specific events should be sent to the event organizer. If you would like…

The bi-weekly PRIMRE Blast is an online newsletter that highlights content from the seven knowledge hubs of PRIMRE; relevant announcements, opportunities, and upcoming events; and news articles of international interest. We hope you find this a valuable tool to keep you connected to new research, opportunities, and industry milestones. …

The U.S. Department of Energy Water Power Technologies Office directed Pacific Northwest National Laboratory,…

Floating offshore renewable energy systems have several advantages: higher wind and wave resources, technically unlimited water depth, better adaptability to soil types… However, they must limit their dynamics for a number of reasons:

• efficiency (e.g., reduction in wind turbine performance if the floating structure movements are too severe),
• safety (e.g., disruption of…

Foundations and gravity anchors are large and heavy structures that are placed on the seafloor. Their capacity to resist tensile, sliding and overturning forces is proportional to their weight. France Énergies Marines developed this Fact Sheet to describe the different foundations and anchors used for offshore renewable energy systems, and compare their advantages and limitations.

Tethys Engineering is a publicly accessible online knowledge base that seeks to progress the marine energy industry by making technical information widely available, both in the U.S. and internationally. Tethys Engineering hosts scientific papers, reports, and other media on current energy, wave energy, ocean thermal energy conversion, and salinity gradient technology. The …

Hybrid energy systems already in place demonstrate that controls, transmission, and storage are obstacles that can be overcome. Societal needs for sustainable power sources can be satisfied using hybrids of photovoltaics and wind, wind/solar and compressed air energy storage, and in the future, the inclusion of burgeoning technologies such as marine hydrokinetics and small modular nuclear…

The site selection plays an important role in the entire life cycle of a tidal power plant (TPP) project. However, some problems decrease the evaluation quality of TPP site selection: (a) suitable and effective methods are scarce since the TPP site selection involves multiple forms of data; (b) there is no comprehensive evaluation index system due to the unilateralism of existing criteria. In…

Tidal energy is one of the best predictable and reliable source of renewable energy. Therefore, this paper aims to map extractable tidal energy, and to determine potential locations to generate electricity from tidal power along the coastline of Sabah and Sarawak states of Malaysia. The data was obtained from Sarawak Marine Department, and analyzed by using ArcGIS version 10.3. There are two…

The need for renewable energy is a global demand due to both the economic factors and the environmental concerns. Malaysian government has been supportive on the research and development in the renewable energies. Renewable Energy Act (2011) and Sustainable Energy Development Authority Act (2011) have been enacted to boost the industry of renewable energy. This paper presents the current…

Over the last decade, many studies have been conducted to estimate the upper limit of the theoretical resource of tidal stream energy and its associated influence on volume flux. However, studies aimed at evaluating the effects of tidal energy extraction on water exchange and transport timescale have been limited. This chapter provides a detailed review of different methods—from analytical…

The vast global wave energy resource holds great promise as an abundant, carbon-neutral resource for electricity generation. For wave energy to make a significant and measurable role in reducing our carbon footprint, highly resolved and accurate assessments of the gross wave resource are a necessity. A comprehensive wave resource assessment provides a quantitative summary of the full…

Marine renewable energies are promising enablers of a cleaner energy future. Some technologies, like wind, are maturing and have already achieved commercial success. Similar to their terrestrial counterparts, marine renewable energy systems require energy storage capabilities to achieve the flexibility of the 21st century grid demand. The unique difficulties imposed by a harsh marine…

The global development of the offshore renewable energy sector has been driven by extensive investment and research in the utilization of offshore renewable energies, mainly at the regional level. However, for mid to long-term marine energy development planning, a comprehensive assessment of the global potential for the exploitation of the main offshore resources is required. This work…

Understanding the hydrodynamic performance of floating energy converters is a complex challenge. Hence, physical modelling is necessary to evaluate the performance of innovative designs and validate them. The present paper shows the experimental work performed to validate a new floating semisubmersiblestructure which combines wave energy converters (3 Oscillating Water Columns, OWC) and wind…