<p>In this research, a new method inspired by rip currents has been suggested for wave energy (renewable energy) extraction in the southern coasts of the Caspian Sea. In this method, which is suitable for sites with low amplitude waves, man-made obstacles seated on the sea bottom are used to produce an artificial rip current. Thus, the low-amplitude waves originated from a strong, localized, and narrow current of water that can be employed for economical energy extraction using a current turbine. To maximize power that can be extracted from the current, the influence of different parameters (i.e., Significant wave height and period, bed slope, barrier bars’ height, distance between the channel and the shoreline, as well as the channel’s gap, slope, and shape) were studied by MIKE3 software. The results showed that for the selected site, the optimum condition is achievable in flat shape barrier bar, where the significant wave height and period, the bottom slope, the height of the barrier, the distance from channel to beach and the width of the channel are 1.5m, 5s, 7.5%, 4.95m, 75m and 10m, respectively. When all these conditions are applied to a width of 100 m, a power of 30kW can be expected. On the other hand, in the studied cases, power ranged between approximately zero and 29.2kW. Meanwhile, the results unexpectedly indicate that the output powers in sloped and parabolic channels are less than output powers in flat channels based on similar conditions.</p>