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NEMA EE S1

2018 Edition, 2018

Complete Document

The Potential Impacts of Rebound Effects on Energy Efficiency Measures Forecasted for Power Drive Systems and High Efficiency Electric Motors



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Description / Abstract:

Executive Summary

a. Rebound effects are unintentional results that appear in cases when a person, institution, administration, etc., decides to improve a performance parameter in one particular facet to improve systems performance but, surprisingly, the opposite occurs.

b. There are many potential scenarios for misapplication and/or miscalculation in estimating and realizing energy savings or economic margins with respect to the use of high efficiency (high IE class) electric motors or motor systems in industrial installations.

c. Rebound effects may occur on the economic side as well as on the technical and regulatory side of an industrial installation.

d. Observation and independent control of the CO2 production of an industrial installation is one proposed method for monitoring a climate-friendly power saving solution and may help to reduce the threats of rebound effects.

e. Legal market regulations or Minimum Energy Performance Standards (MEPS) should be developed in a manner to avoid the threat of rebound effects.

f. Comprehensive market surveillance, MEPS or importation enforcement of single components for industrial installations does not guarantee energy-savings during use if potential rebound effects have not been understood and mitigated.

g. Understanding potential causes of rebound effects will help to avoid them and thus maximize attainment of energy-saving targets. This will also help improve investment decisions and reduce disappointment when those targets cannot be realized due to rebound effects.

h. The goal of this paper is to better explain and illustrate these challenges so that management decisions are more well-informed.
ANSI/NEMA MW 1000, 2014