Flumill Tidal Helix Screw

Flumill is unlike any other type of tidal turbine currently in operation or being tested. It is a helical device, with the appearance a screw, which is fastened to the seabed at one end, and floats buoyantly at the other end. The helix experiences drag from tidal streams, causing it to rotate. The mechanical energy is converted into electricity by a generator. A single Flumill unit is a module consisting of 1) a foundation, which is pre-installed on the seabed, 2) a steel transition plate, which houses the helical devices, 3) two generators 4) two helical devices, and 5) a top fin which controls the buoyancy of the devices.

Technology Developer

Flumill

Device Status

Is the device actively being developed or is available for purchase (active)? Or has development or support ended (inactive)?

Inactive

Technology Type

Archimedes Screw

Power Take-Off

Mechanism that converts the motion of the prime mover into a useful form of energy such as electricity, learn more

Direct Drive Generator

Surface Expression

False

Estimated TRL

Estimated Technology Readiness Level scale from 1 to 9 with 9 being the most mature technology

TRL Last updated: 4 October 2021

6

Energy Resource

Ocean Current

Water Column Position

Last Modified

10 October 2024

Test Sites where Flumill Tidal Helix Screw was tested

Citation Formats

“Flumill Tidal Helix Screw.” Marine Energy Projects Database: Devices, PRIMRE, United States Department of Energy, https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Flumill_Tidal_Helix_Screw. Accessed <day> <monthRoman> <year>.

Marine Energy Projects Database: Devices. <year>. "Flumill Tidal Helix Screw." Accessed <monthRoman> <day>, <year>. https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Flumill_Tidal_Helix_Screw.

PRIMRE/Databases/Projects Database/Devices/Flumill Tidal Helix Screw

Flumill Tidal Helix Screw

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