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Rebound effects for households’ energy efficient vehicles

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2019
Yüksel, Dilan.
Energy efficiency is one of the most critical dimensions in energy consumption and the technologies improving energy efficiency thus decreasing energy demand as well as greenhouse gases have been becoming widespread in recent years. On the other hand, the fact that the savings owing to the improvements in energy efficiency would not happen as expected indicates a phenomenon which has been being addressed for a long a time in the literature and practice: Rebound Effect. This concept emphasizes that the cost advantage due to an improvement in energy efficiency would offset some of or overall expected gains resulting from this efficiency improvement. This study focuses on the direct rebound effect in personal automotive transport for households in Turkey. A survey with 472 participants was conducted within the study. The rebound effect analyses are performed by the quasi-experimental method and based on the participants from 4th and 5th quintile income groups for whom the data for both the current and the previous cars are available. Besides, the distinct fuel types (gasoline, diesel and LPG) are taken into account in a single framework and the rebound effects are calculated separately according to the unit energy cost criteria and energy intensity criteria. The estimations are 10.08% and 25.40% for in-city and intercity, respectively, based on the former criteria while it is 16.77% and 31.51% based on the latter criteria. On the other hand, the effect of the fuel price is analyzed by estimation of price elasticity of fuel consumption which is the first attempt for micro level in Turkey. The estimation results of the price elasticity of fuel demand showed that the price elasticity of in-city consumption is -0.25 for gasoline, -0.22 for diesel and -0.28 for LPG; price elasticity of inter-city consumption is -0.29 for gasoline; 0.22 for diesel and -0.19 for LPG.