The paper presents a new method for representing the aggregate effects of the three-phase induction motors connected to a common bus in a power system. The proposed technique has been directly developed from the standard specifications of the considered motors. Composing the motors based on these basic and important data provided by manufacturers results in a close representation of the machines. The new method aggregates the motors by generating their aggregate specifications which are very important in power system planning, control, and operation. However, such essential information is not produced by the existing induction motor aggregation methods. The proposed method has been proved to be simple and yet accurate in aggregating induction motors in power system studies. This paper describes the derivation of the proposed technique and demonstrates its verification.