The minimum current required to operate a hydrokinetic device is typically 2-4 knots (1-2 m/s). Optimum currents are in the 5-7 knot (2.6-3.6 m/s) range. Water depth is an important factor in the total energy that can be extracted from a site, since rotor diameter is dependent on adequate water level above the installed device. Hydrokinetic devices are ideally installed in locations with relatively steady flow throughout the year, locations not prone to serious flood events, turbulence, or extended periods of low water level (Hydrokinetic Energy).
Technology to generate power from slow moving river and ocean currents
