Assessment criteria of the feasibility of replacement standard efficiency electric motors with high-efficiency motors

Currently, the feasibility to replace standard efficiency electric motors with higher ones is assessed considerations differing from real operating conditions in industry. This study compares of replacing 26 (IE1) high-efficiency (IE2 and IE3) a sugar plant, based on three different energy scenarios considering incremental costs or depreciated motors. Energy scenario 1 consider that operate for 6000 h/year at full load nominal efficiency. While 2 3 measured time factor The results show overestimates electricity consumption between 18 times, contrasted difference 1–7% 3, leading saving potentials 1.2 33.4 times than 3. Considering 1, it feasibly all while only costs. Therefore, use unrealistic economic loss, should be avoided future studies.