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PRIMRE/Databases/Projects Database/Devices/Slow Mill WEC
From Open Energy Information
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Slow Mill WEC
The Slow Mill is a Wave Energy Converter consisting of a floater with blades variably connected to an anchor on the seabed. Waves push the floater up and the blades away from the anchor. This way not only the up and down movement but also the back and forth movement of the waves is utilised. The blades go as deep as 4-5 m to extract wave power from below the surface as well. When the wave recedes, it takes the Slow Mill back to its starting position and a winch reels in the cable, preparing the device for the next work stroke. The entire unit follows the orbital or sometimes elliptical wave path but moves a bit slower than the wave, hence its name: Slow Mill.
Additional Information
Device Status
Is the device actively being developed or is available for purchase (active)? Or has development or support ended (inactive)?
Active
Technology Type
Power Take-Off
Mechanism that converts the motion of the prime mover into a useful form of energy such as electricity, learn more
Hydraulic Generator
Max Rated Power Capacity
The maximum amount of electricity that can be produced by the device, as rated by the manufacturer.
400 KW
Surface ExpressionTrue
Estimated TRL
Estimated Technology Readiness Level scale from 1 to 9 with 9 being the most mature technology
TRL Last updated: 22 September 2023
7
Energy Resource
- Wave
Water Column Position
Surface
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Submerged - Mid
Entire Water Column
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Submerged - Bottom
Last Modified
7 May 2025
Projects Using Slow Mill WEC
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Citation Formats
“Slow Mill WEC.” Marine Energy Projects Database: Devices, PRIMRE, United States Department of Energy, https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Slow_Mill_WEC. Accessed <day> <monthRoman> <year>.
Marine Energy Projects Database: Devices. <year>. "Slow Mill WEC." Accessed <monthRoman> <day>, <year>. https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Slow_Mill_WEC.
