Salinity gradient power (SGP) is a potentially clean and sustainable form of energy resource that catches the eyes of the researchers in the soaring of energy crisis in the present decade . Theoretical calculation suggests that we can extract up to 0.8KW energy from one cubic meter sea water mixed with fresh water . Thus, if we consider the flow of all rivers of the world into account, we get an estimated value of the global potential of SGP as 2.6T W , which is nearly 21% of average power consumption (12.3T W ) of the world . Currently 800GW power is obtained from the hydroelectric process which is the dominant source of electricity of developing and underdeveloped countries. Thus, the advancement of salinity gradient power generation in an economical way would be a pleasant technique for those countries. But, harness this energy in an efficient manner is a challenge to energy-conversion technologists.