Hanna Wave and Tidal Power Drives was founded in Coos Bay, Oregon in 2010 by inventor, John Clark Hanna. Over the past decade Hanna has designed innovative Power Take-Offs (PTOs) for international wave and tidal energy developers. Two patents (US 8,358,026 and U.S. 8,745,981) have been granted and sold.

 

  Now in 2024, a novel dual rotor, coaxial powertrain called the "Tidal-Wave Drive" is being introduced.  This versatile PTO is unique. It supports four major types of wave and tidal energy conversion technologies: floating and subsurface buoys, jetty-based OWC air turbines and bi-directional tidal turbines.  The dual rotor turbine is a proven design that has been validated at four universities.

  

  Most importantly, the Tidal-Wave Drive is simple.  Simplicity of design is an absolute necessity in order to have a reliable, cost-efficient system.  Existing marine renewable energy (MRE) designs are absurdly over engineered; their complexity drives up cost, making them non-competitive with conventional energy.  The harsh marine environment demands an uncomplicated design.

 

  Because Climate Change is an existential threat, a decision has been made not to patent the Tidal-Wave technology.  The Tidal-Wave Drive is being offered as an 'open-source' design.  With attribution, it is free to all MRE developers or researchers around the world.  Click HERE to read a full description of the Tidal-Wave Drive.

   

  To help stimulate the emerging 'Blue Economy', another technology will also remain in the Public Domain.  This is the Hanna Mono-radial wave turbine.  It is now designated as an 'open source' technology.  The device was assessed by a DOE-funded CFD study that validated the design as a self-rectifying turbine.  It is now available to global wave energy developers and manufacturers.  This fractional scale turbine is ideal for providing low-wattage power to charge batteries on extended mission data collection or surveillance buoys.  A full size unit will develop utility grade power. The Mono-radial wave turbine harvests energy from the up and down movement of ocean waves by means of the OWC (Oscillating Water Column) principle.  OWC technologies are the most mature and well-studied wave conversion systems in the marine energy sector.

  

  The open-source Mono-radial turbine and the coaxially-driven turbine can be placed on breakwaters, jetties or floating platforms.  Environmental studies done on existing shore based OWC installations have resulted in FONSI (Findings of no Significant Impact).  Installing the turbines on shore based power plants will not interfere with marine life, maritime traffic, commercial fishing or recreational activities.

 

  For more information on the "Mono-radial Turbine" or the coaxial "Tidal-Wave Drive", go to Page Two by clicking HERE.