Measured current and voltage of sea water using GCEQ are presented in Table-1. Three different pairs of electrodes, Zn -C, Al -C and F e -C are used. It is observed that, highest voltage (1.2V ) and current (55mA) obtained for Zn -C electrode pair. Obviously, this pair of electrodes yields highest power density (87.65W m -2 ). Generated power density is lowest for F e -C pair (22.31W m -2 ), but it is still higher than other reported methods like PRO (7.7W m -2 ), RED (0.9W m -2 ), IDM (3.5W m -2 ) etc. Thus, with respect to power density, GCEQ method is the best among all reported methods of this class.