The BATCHES model allows the user to (1) evaluate alternative system configurations and operating procedures, (2) identify bottlenecks, (3) assess the requirements for capacity expansion, and (4) evaluate scheduling strategies. The output obtained consists of graphs, and a comprehensive summary report containing a mass balance summary, equipment and resource utilisation statistics, cycle time and waiting time information and, finally, time lost due to waiting for materials and resources. BATCHES is currently being used to develop a simulation model for a local brewery.