A computer model of a cotton ginning system was developed to increase producer returns and to reduce energy usage in gins. Input to the model consists of the initial grade associated with the minimum ginning sequence, moisture content, maximum turnout, staple length and cotton prices. Output of the model consists of the operating control decisions for each stage of the ginning or drying process, final grade, moisture content, turnout, and producer monetary returns. Current use is hampered by the unavailability of sensing mechanisms for grade and moisture. In the interim, the model can be used to develop generalized guidance for ginners and producers.