Increasing the motor EFFICIENCY has a significant effect on the energy consumption. By calculating the annual energy consumption of a motor, the effect of increasing the EFFICIENCY on energy savings can be estimated. One of the most effective and inexpensive ways to increase the energy EFFICIENCY is rewinding or redesigning the stator winding. Reducing energy consumption and the cost savings obtained by rewinding motors can attract the investors' attention. In this paper, a single-phase induction motor with 0. 75 horsepower, has been rewound for three-phase operation, and electromagnetic analysis has been performed using the finite element method by the Flux software and its operation characteristics have been analyzed. Economic analysis has been carried out by calculating operating costs, payback period and annual energy savings. According to the results, the EFFICIENCY of the three-phase rewinded motor compared with the single-phase induction motor, has increased by about 12. 5%, and the payback period based on 13 cents per kilowatt-hour is approximately one year. Based on this comparison, replacing a single-phase induction motor with a three-phase rewinded motor in the standard EFFICIENCY (IE1) is more ECONOMICAL than replacing it with a motor in this class of EFFICIENCY and the achieved cost saving, in full load is about 61$. For validation, the experimental results were compared with the simulation results and a measurement error of about 6% was observed.