Current economic situation force manufacturers to find the new ways of designing electrical machines. In order to succeed in competitive market, industry has to create new approaches of finding the solutions which will satisfy customer's requirements. Task of determining this set of optimal configurations must be done in the least possible time frame. This problem is becoming more complex when the required electrical machine is not in the standard range of configurations and so the price of the solution cannot be determined with high precision. In this article we propose an example of industrial application which assists in defining the set of optimal configurations of induction machine where the criterions of optimality are the efficiency and total cost of manufacturing.