How constant is constant elasticity of substitution? Endogenous substitution between clean and dirty energy

Ara Jo and Alena Miftakhova

Journal of Environmental Economics and Management, 2024, vol. 125, issue C

Abstract: The degree of substitutability between clean and dirty energy plays a central role in leading economic analyses of optimal environmental policy. Despite the importance, assuming a constant and exogenous elasticity of substitution has been a dominant theoretical approach. We challenge this assumption by developing a dynamic general equilibrium model with an endogenous elasticity of substitution that interacts with the relative share of clean inputs in the economy. We find strong dynamic feedback effects arising from endogenous substitution capacity that amplifies the impact of directed technical change and accelerates the transition to a green economy.

Keywords: Elasticity of substitution; Directed technical change; Climate change (search for similar items in EconPapers)
JEL-codes: O33 Q40 Q54 Q55 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:jeeman:v:125:y:2024:i:c:s0095069624000561

DOI: 10.1016/j.jeem.2024.102982

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