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Per Capita Income, Consumption Patterns, and CO2 Emissions

Justin Caron and Thibault Fally ()

No 13092, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: This paper investigates the role of income-driven differences in consumption patterns in explaining and projecting energy demand and CO2 emissions. We develop and estimate a general-equilibrium model with non-homothetic preferences across a large set of countries and sectors, and trace embodied energy consumption through intermediate use and trade linkages. Consumption of energy goods is less than proportional to income in rich countries, and more income-elastic in low-income countries. While income effects are weaker for embodied energy, we find a significant negative relationship between income elasticity and CO2 intensity across all goods. These income-driven differences in consumption choices can partially explain the observed inverted-U relationship between income and emissions across countries, the so-called environmental Kuznet curve. Relative to standard models with homothetic preferences, simulations suggest that income growth leads to lower emissions in high-income countries and higher emissions in some low-income countries, with only modest reductions in world emissions on aggregate.

Keywords: CO2 content of consumption; consumption patterns; emissions projections; non-homothetic preferences (search for similar items in EconPapers)
JEL-codes: F18 O10 Q47 Q56 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ene and nep-env
Date: 2018-07
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Working Paper: Per Capita Income, Consumption Patterns, and CO2 Emissions (2018) Downloads
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