Marine and Hydrokinetic Technology Database

The U.S. Department of Energy's Marine and Hydrokinetic Technology Database provides up-to-date information on marine and hydrokinetic renewable energy, both in the U.S. and around the world.

The database includes wave, tidal, current, and ocean thermal energy, and contains information on the various energy conversion technologies, companies active in the field, and development of projects in the water. Depending on the needs of the user, the database can present a snapshot of projects in a given region, assess the progress of a certain technology type, or provide a comprehensive view of the entire marine and hydrokinetic energy industry.

Results are displayed as a list of technologies, companies, or projects. Using the search options at left, data can be filtered by a number of criteria, including country/region, technology type, generation capacity, and technology or project stage. The user can also learn more about the different marine and hydrokinetic technology types by selecting the "Technology Glossary" option. Anyone can submit a technology and/or project for consideration.

Click on a thumbnail in the below Global Project Map to view a project profile page - the thumbnail colors correspond with project status.

Map Key (based on Project Status)


  • Red Pushpin Phase 0 - Never Developed (Permit Surrendered or Unknown status
  • Red Pushpin Phase 1 - Siting/Planning
  • Red Pushpin Phase 2 - Site Development or Phase 3 - Device Testing/Commissioning [Pilot]
  • Red Pushpin Phase 4 - Deployed [Grid Connected]