NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

A Microeconomic Framework for Evaluating Energy Efficiency Rebound And Some Implications

Severin Borenstein

NBER Working Paper No. 19044
Issued in May 2013
NBER Program(s):   EEE

Improving the efficiency with which we use energy is often said to be the most cost-effective way to reduce energy use and greenhouse gas emissions. Yet, such improvements usually lower the cost of using energy-intensive goods and may create wealth from the energy savings, both of which lead to increased energy use, a "rebound'' effect. Disagreements about the magnitude of energy efficiency rebound are immense and play a central role in debates over the role energy efficiency can play in combating climate change. But these differing views seem to stem as much from the lack of a common framework for the analysis as from different estimates of key parameters. I present a theoretical framework that parses rebound into economic income and substitution effects. The framework captures the wide range of rebound effects that have been termed direct, indirect, re-spending, and transformational rebound, among others. It does not capture economy-wide impacts, such as the potential for a macroeconomic multiplier or the impact on energy prices, which I discuss separately. I then explore the implications of this framework for measurement of rebound, examining rebound from improved auto fuel economy and lighting efficiency. The illustrative calculations I carry out suggest that rebound that more than offsets the savings from energy efficiency investments (known as "backfire") is unlikely, but rebound is likely to significantly reduce the net savings from at least these energy efficiency improvements.

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Document Object Identifier (DOI): 10.3386/w19044

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