NEMA EE S1-2018: NEMA and CEMEP released a joint statement on potential negative effects (called rebound effects) related to regulations promoting higher efficiency motors.

NEMA EE S1-2018
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White Paper on The Potential Impacts of Rebound Effects on Energy Efficiency Measures Forecasted for Power Drive Systems and High Efficiency Electric Motors
National Electrical Manufacturers Association , 11/01/2018