MHK Technologies/Neptune Proteus NP1000

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Neptune Proteus NP1000.jpg

Technology Profile
Primary Organization Neptune Renewable Energy Ltd
Project(s) where this technology is utilized MHK Projects/Neptune Renewable Energy 1 10 Scale Prototype Pilot Test
MHK Projects/Humber St Andrews
Technology Resource
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Technology Type
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Cross Flow Turbine
Technology Readiness Level
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TRL 5/6: System Integration and Technology Laboratory Demonstration
Technology Description The Neptune Proteus Tidal Power Pontoon consists of a 6m x 6m vertical axis crossflow turbine mounted within a patented, symmetrical diffuser duct and beneath a very simple steel deck and buoyancy packages. The Neptune Proteus is designed for estuarine sites, which can exhibit powerful currents yet have lower access, cabling and maintenance costs than offshore environments. The vertical shaft connects to the gearbox and generator/alternator, located on the top of the pontoon with associated valves and electrical processing and control machinery. The power pontoon is easily moored in the free stream, thus minimizing environmental impact and operates just as efficiently in both flood and ebb currents. The rotor is maintained at optimal power outputs by sets of computer-controlled shutters within the duct. Theoretical work on 1/10th, 1/40th and 1/100th scale laboratory experiments suggest an overall efficiency of greater than 45%.

Technology Dimensions
Length (m) 20
Width (m) 14

Technology Nameplate Capacity (MW) 1000 MW
Device Testing
Date Submitted 9/28/2010

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