The AquaBuOY is a freely floating heaving point absorber (a) that reacts against a submersed tube, filled with water (reaction mass). The reaction mass acts on the piston assembly (b) that forces the hose (c) to pump water on a higher-pressure level through a turbine that generates electricity. Both in the upward and downward movement of the buoy the hose pumps pump or discharge the brine at 30 bar. The average diameter of the buoy is 6m, and the draught of the AquaBuOY is approx. 30m.
AquaBuOYs are designed to maximize power output during more typical, moderate wave conditions on an annual basis vs. extreme wave intensities that occur less frequently during storms. This avoids costly over-design that only captures extreme spikes in storm-based wave intensities.