... multi-unit array that would extract energy from tidal and marine currents as opposed to tidal barrages where stored potential energy of a basin is harnessed While modularity and scalability are attractive ... Canada Amazon AquachargerTM, Marlec Engineering, UK AquanatorTM Atlantis Energy, Australia Atlantisstrom, Germany Bangladesh Univ of Engg & Tech, Dhaka, Bangladesh BioPower Systems, Australia Brazil-prototype ... rotor axis with respect to water flow, three generic classes could be formed (a) horizontal axis, (b) vertical axis, and (c) cross flow turbines The horizontal axis (alternately called as axial-flow)...