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Hydrokinetic power refers to the generation of power from the
flow, current or velocity of water, whereas hydropower traditionally
refers to power generated using dams (impoundment or run-of-river).
Since hydrokinetic power relies simply on the velocity of water,
these power systems can be placed into sources of flowing water
with minimal infrastructure or environmental impacts. Hydrokinetic
power is cutting-edge waterpower.
Hydro Green Energy's hydrokinetic power turbine arrays are composed
of the only truly modular, interchangeable, zero-head, current-based
turbines in the industry. Hydro Green Energy's dual duct, axial
flow, interchangeable hydrokinetic power turbine is covered by
U.S. and International patents. Our current-driven turbines operate
in river (in-stream, free-flow, open-river or hydrokinetic run-of-river),
ocean (ocean power) and tidal settings (tidal power).
Early rendering of Hydro Green Energy's dual ducted hydrokinetic
turbine array (HTA) as viewed from below the surface of the water.
The nameplate capacity of the Hydro Green Energy design is 250
kW per unit with a rotor diameter of 12 feet. Due to our surface
suspension system, there are inherent operational maintenance
and safety advantages. An on-board gantry allows for the raising
and lowering of individual generating units in the hydrokinetic
turbine array without having to conduct underwater diving and
maintenance operations in extreme water velocity and near zero
visibility conditions. The floating raft provides a platform for
operation and maintenance workers to stand on and place equipment
during activities. In a tidal energy setting, this advantage becomes
even more pronounced since all maintenance activities typically
occur within a 15 to 30 minute slack tide (the period during which
the current reverses direction). From an underwater diving standpoint,
the short operational window during the slack tide significantly
increases the risk of injury to the divers and the potential loss
of equipment.
Advantages of current based hydrokinetic power systems:
• High capacity factor (~ 90+%) for in-stream river and ocean-current
applications
• Highly predictable, baseload power
• Maximum net energy from in-stream river and ocean-current energy
applications
• Peak power generation in tidal energy applications
• Highest degree of safety
• Large projects consist of robust and simple metal construction
• Small projects to consist of reinforced plastic construction
• Utilizes conventional mooring systems
• Simple installation using existing marine vessels
• Scalable to large power generating stations (100+ MW) – utility
scale power
Image showing relative size of operations and maintenance
workers at Hydro Green Energy hydrokinetic project
