Theoretically, using GCEQ we get electricity from sea water without loosing the electrode. But, in practice, metal electrodes are destroyed with time due to corrosion. Use of proper nonmetal electrodes would be very handy for extraction of electricity from sea water using GCEQ. This method would be easier to implement in a large scale also. Carbon rod electrode is a very good choice for this purpose. We may use graphite electrode, fabricated graphene electrodes also. But, generated electrode potentials for all these carbon based electrodes would be nearly same. Thus, we shall get very small potential difference if we use any of these electrode pair. To have high potential difference, we should use one carbon Use of CCEQ is an alternate way to get electricity from sea water using two carbon electrodes. Experimental setup for CCEQ is presented in Fig. . But,we have to use salinity gradient for this purpose. River water or rain water may be used as low concentration solution. Though we use same electrodes, different electrode potentials are generated due to different concentrations of the solutions. There are two major difficulties for implementation of CCEQ. We need porous barrier to separate two solutions from one another. Co-existence of sea water and river water or rain water is another burden. Few proposals are presented in proposal section to avoid these limitations.