Abstract: The energy efficiency is acknowledged as an efficient way to reduce energy consumption, save energy and mitigate pollution. It varies from different countries and regions. When calling for improving the energy efficiency, countries usually neglect the new appearance which is named energy efficiency rebound effect. That means the expected beneficial impacts from energy efficiency increase are partially offset by the increased energy demand resulting from price effect, income effect and the economy-wide effect. Researchers give alternative explanations on the existence of rebound effect and the empirical studies are also in difference due to their samples, methods and the time series.

Key words: energy consumption, energy efficiency, rebound effect