Controlled Emission Dispatch

A method is described for commiting generators and scheduling their output so as to comply with environmental objectives such as limitations on emission of oxides of sulfur, oxides of nitrogen or discharge of heat into watercourses. The limitations may apply to emissions or to resulting ambient concentrations and may apply simultaneously to more than one type of residual. The method depends on the use of monetary conversion factors. For each set of environmental objectives and each system load level, minimum operating costs are achieved. The examples presented are based on the characteristics of the generators in the Israeli power system.