Using the Marine and Hydrokinetic Technology Database
The Marine and Hydrokinetic Technology Database describes technologies, companies, and projects. Instructions for each section of the “Advanced Search” screen and the results pages are included
The “Advanced Search” screen allows you to search the database using multiple filters. You may search using any combination of filters by selecting boxes from any of the
various criteria below. Projects will be returned only if they meet ANY of the criteria selected in ALL the categories for which you select an option. If you leave all
options unchecked in any category, that category will not affect your search. When you’ve selected all of the filters you’d like, click the “search” button at the bottom of
You Must Select One
You must select one of these filters: technology, company, or project. Depending on what filter is selected, it will
determine how the results page is sorted.
By checking one or more boxes, you may search the database for companies and projects located in a particular area. For companies and projects in the United States,
you may further limit your search by checking one or more boxes from the list of
sub-regions of the United States (PDF 1.06MB)(Download Adobe PDF Reader). The search will in include all technologies,
companies, or projects located in the area represented by any checked box. If no boxes are checked, the search will not be limited by location.
By checking one or more boxes, you may search the database by technology applications, or if more specificity is desired, by technology types. If a given technology
could not be categorized by existing technology types, the technology is considered to be “other.” The search will include all technologies, companies, or projects that
fit the technology application/type represented by the checked box. If no boxes are checked, the search will not be limited by technology application/type.
Technology Readiness Levels
By checking one or more boxes, you may search the database for technologies, and the companies and projects that employ them, which are at a particular technology readiness level.
Projects that appear on the results page will encompass companies whose technologies are undergoing partial or full scale device testing. The search will
include all projects that fit the technology stage represented by any checked box. If no boxes are checked, the search will not be limited by technology readiness level.
TRL 1-3: Discovery / Concept Definition / Early Stage Development, Design and Engineering
- TRL 1-2: These are the lowest levels of technology readiness. Scientific research begins to be translated into applied research and development
where basic principles are observed and reported. Technology concept and application are formulated and investigated through analytic studies and
in-depth investigations of principal design considerations. This stage is characterized by paper studies, concept exploration, and planning.
- TRL 3: In this stage, active research is initiated, including engineering studies and laboratory studies to physically validate analytical
predictions of separate elements of the technology.
The purpose of this stage is to evaluate, insofar as possible, the scientific or technical merit and feasibility of ideas that appear to have
TRL 4: Proof of Concept
- In this stage basic technological components of a sub-scale model are integrated to validate design predictions and system level functionality.
The models, or critical subsystems, are tested in a laboratory environment.
This TRL represents early stage proof-of-concept system or component development, testing and concept validation. In this stage, critical technology
elements are developed and tested in a laboratory environment. It is envisioned that scale models will be at 1:10 scale or smaller.
TRL 5/6: System Integration, and Technology Laboratory Demonstration
- TRL 5: At this level, basic technological components are fabricated at a scale relevant to full scale and integrated to establish and
verify subsystem and system level functionality and preparation for testing in a simulated environment.
- TRL 6: At this level, representative model or prototype system at a scale relevant to full scale, which is beyond that of TRL 5, is tested
in a relevant environment. This stage represents a major step up in a technology's demonstrated readiness and risk mitigation and is the stage
leading to open water testing.
At this stage device, system, and subsystem level interfacing/integration testing represent a vital stage in technology development, and must
be demonstrated. Models should be at a relevant scale (1:1 – 1:5) to reflect the challenges and realities of the full scale (1:1) system. Model
testing is to be performed in a test facility capable of producing simulated waves/currents and other operational conditions while monitoring device
response and performance. Furthermore, the devices foundation concept shall be incorporated and demonstrated.
TRL 7/8: Open Water System Testing, Demonstration, and Operation
- TRL 7: At this level, the prototype scale components and subsystems are fabricated and integrated to establish and verify subsystem and system
level functionality and preparation for testing in an open water operational environment to verify expected operation and fine tune the design prior
to deployment in an operational demonstration project.
- TRL 8: At this level, the prototype in its final form (at or near full scale) is to be tested, and qualified in an open water environment under
all expected operating conditions to demonstrate readiness for commercial deployment in a demonstration project. Testing should include extreme conditions.
At this stage, the device model scale is expected to be at or near full scale (1:1 – 1:2). Testing may be initially performed in water at a
relatively benign location, with the expectation that testing then be performed in a fully exposed, open water environment, where representative
operating environments can be experienced. The final foundation/mooring design shall be incorporated into model testing at this stage.
DOE TRL 9: Commercial-Scale Production / Application
- At this stage, the actual, commercial-scale system is proven through successful mission operations, whereby it is fielded and in-use in
This stage represents an in-service application of the technology in its final form and under mission condition
By checking one or more boxes, you may search the database for projects that use a technology, which will be or has been deployed.
- Phase 0 - Undeveloped: projects that had a specific site permitted or in the permitting process, but which was later surrendered.
- Phase 1 – Siting/Planning: projects and their respective companies whose technologies are not
yet in the water
- Phase 2 – Site Development: projects and their respective companies who have
selected a site and begun site preparations (e.g. installation of a sub-sea cable).
- Phase 3 – Device Testing: projects where devices are undergoing or have undergone testing/commissioning before deployment.
- Phase 4 - Deployed: Deployed: commercial projects that have been completed with all device units in water or past commercial projects that
have had a removal of all devices and environmental remediation.
By clicking on the pull-down menu, you may search the database for technologies, companies, or projects that have been published or updated within the past week,
month, 90 days, or year. Note that any change to the publication status of a technology, company, or project will reset the date, so some technologies, companies,
or projects may show up even if they have been available online for longer than the specified time frame. If no time period has been selected, the search will not be
limited by the time of the last update.
After clicking the “Submit” button at the bottom of the Advanced Search page, or any of the “List all” links to the left, a results page will appear.
You may alphabetically sort some of the columns by clicking on the hyperlinked column titles.