The wave energy can be a critical solution for growing international renewable energy demand. The present study demonstrates the wave potential of the southern side of the Caspian Sea. In this regard, the mathematical equation of the wave energy was presented. Moreover, the wave energy simulation was performed using the wind data from ECMWF within 2011–2015 by implementing the MIKE software. For this reason, nine nominated stations were presented and the wave height characteristics and the maximum wave potential were evaluated in order to validate the results of the simulation, Amirabad and Neka stations were selected and the results were compared and good agreement was observed. Moreover, a mesh structure was presented to demonstrate the depth variation of the Caspian Sea. The results of the simulation were achieved for nine stations and the wave height and peak wave period was demonstrated. The wave power contours were revealed for every station. The result showed that the May (0.9 kW per meter) and December (3.6 kW per meter) have the lowest and highest wave energy potential for selected stations.