Neptune 5B

Neptune 5 is the latest iteration on the Neptune design (see Neptune 3). The device is a multi-float point absorber that uses a main pile attached to seafloor as its foundation, paired with four floats attached to drive the reciproating motion. The full-sclae system has an estimated weight of 100 tons, is 15 meters in diameter and the top of the dome is approximately 6 meter above high tide. The full scale system would have 12 floats to generate 250 kW.

Technology Developer

Neptune Equipment Corporation, NeptuneWaveca

Device Status

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

Inactive

Technology Type

Point Absorber

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

Max Rated Power Capacity

The maximum amount of electricity that can be produced by the device, as rated by the manufacturer.

250 KW

Surface Expression

True

Estimated TRL

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

5

Energy Resource

Wave

Water Column Position

Citation Formats

“Neptune 5B.” Marine Energy Projects Database: Devices, PRIMRE, United States Department of Energy, https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Neptune_5B. Accessed <day> <monthRoman> <year>.

Marine Energy Projects Database: Devices. <year>. "Neptune 5B." Accessed <monthRoman> <day>, <year>. https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Neptune_5B.

Last modified: 1 May 2025

PRIMRE/Databases/Projects Database/Devices/Neptune 5B

Neptune 5B

Citation Formats