Unlike most industrial generating plants, there was to be no process steam requirement for the Salt Grass plant; all output from the plant was to be in the form of electric energy. The design objective was to use the largest gas turbines available and, based on prior experience, to use unfired heat recovery boilers for operating simplicity and improved reliability. All steam was used to drive 4 identical 25 MW steam turbines coupled to the gas turbines at the outboard end of the generators (which in turn were mounted on the cold compressor-end of the rotor). The plant comprised four separate single-shaft combined cycle units for maximum operating flexibility. It also included a start-up boiler to enable the steam turbines to be used to start the gas turbines.