Methods of making fuel are described herein. A method may include providing a first working fluid, a second working fluid, and a third working fluid. The method may also include exposing each working fluid to a high voltage electric field to produce a first plasma, a second plasma, and a third plasma, respectively. The method may also include providing at least one fueling material and expositing it to one or more fourth high-voltage electric fields to produce a fueling material plasma. The method may also include contacting the plasmas within a processing chamber to form a plasma mixture, cooling the plasma mixture using a heat exchange device to form a cooled plasma mixture, and contacting the cooled plasma mixture with a catalyst to form a fuel.