Reverse electrodialysis cell with heat pump

A system for generating electricity comprising:

• a first saline solution;
• a second saline solution, wherein the salinity of the second saline solution is different than the salinity of the first saline solution;
• a heat pump configured to transfer thermal energy to the first saline solution and/or the second saline solution;
• a selectively permeable membrane separating the first saline solution from the second saline solution, the selectively permeable membrane configured to control the mixing of the first saline solution and the second saline solution, the selectively permeable membrane further configured to capture at least some salinity-gradient energy as electrical power as the first saline solution and the second saline solution mix and to form a spent first saline solution and a spent second saline solution;
• a regeneration system;
• a closed loop configured to circulate the first spent solution through a first subsystem in the regeneration system;
• and
• a second closed loop configured to circulate the second spent solution through a second subsystem in the regeneration system.