This is the most abundant source of Renewable Energy in the World. The energy converting devices utilize the principle of an Oscillating Water Column (OWC). OWC based Wave Energy Power Plants convert wave energy into low-pressure pneumatic power in the form of bi-directional airflow. Self-rectifying air turbines, capable of operating uni-directionally in bi-directional airflows, are used to extract mechanical shaft power, which is further converted into electrical power by a generator.