Systems and method for generating electricity using heat from a SCWO reaction. The system may comprise a pump that pumps the mixture undergoing the SCWO reaction to a pressure above the critical pressure point for the mixture. The pressurized mixture is heated, by a heating system, above the critical temperature point for the mixture. The SCWO reaction occurs in a reaction chamber. The reaction chamber is in thermal communication with a vessel that holds water such that the heat from the mixture heats the water into steam. The steam powers a steam turbine, which is connected to an electrical generator to thereby generate electricity.