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Reducing Electricity Cost through Use of Premium Efficiency Motors - February 2010

Guillermo J. Costa

The article "Reducing Electricity Cost through Use of Premium Efficiency Motors" appeared in the February 2010 issue of Power Transmission Engineering.

Summary
motors with premium efficiency counterparts presents businesses with a significant opportunity to reduce operating costs. A comparison between premium and standard efficiency motors from 0.25 to 10 horsepower is conducted; comparisons of full-load efficiencies are shown, and estimated payback periods are calculated. Methods for calculating the yearly kilowatt-hour consumption and yearly cost savings of premium efficiency motors for this horsepower range are also given. The cost advantages of premium efficiency motors are summarized, and relevant examples of real world cost savings are shown.

Keywords
motors, premium efficiency, NEMA, electric motors

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