The OBREC device consists of a concrete top element, which can be installed in new or existing breakwater, e.g. during maintenance operations. It is provided with a sloping plate that conveys the overtopping waves inside a reservoir, which later flow in the rear chamber, where the turbines should be installed. The front reservoir captures the overtopping waves to produce electricity. The energy can be then extracted via low head turbines, which should be powered by a constant hydraulic head.
Technology validated in relevant environment.
Fidelity of breadboard technology increases significantly. The basic technological components are integrated with reasonably realistic supporting elements so they can be tested in a simulated environment. Examples include “high-fidelity” laboratory integration of components.
Many series of small scale lab tests in wave flume and tanks. Prototype installation (June 2016) of a 5 m wide OBREC in the port of Naples. The installation will include monitoring of nearshore waves, wave run-up, pressure on the structure, wave overtopping and power production.

How does it work?

OBREC is provided with a sloping plate that conveys the overtopping waves inside a reservoir, which later flow in the rear chamber, where the turbines should be installed. The front reservoir captures the overtopping waves to produce electricity. The principle is to use the difference in water levels between the reservoir and the mean sea water level. The energy can be then extracted via low head turbines, which should be powered by a constant hydraulic head. The OBREC cross section will be optimized in order to improve its performance, i.e. minimize the risk and increase the energy production in terms of discharges rates flowing inside the rear chamber.