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Title:The environment and directed technical change: Comment PDF Logo
Authors:Hourcade, Jean-Charles
Pottier, Antonin
Espagne, Etienne
Issue Date:2011
Series/Report no.:Nota di lavoro, Fondazione Eni Enrico Mattei: Climate Change and Sustainable Development 95.2011
Abstract:This paper discusses the growth model with environmental constraints recently presented in (Acemoglu et al., 2011) which focuses on the redirection of technical change by climate policies with research subsidies and a carbon tax. First, Acemoglu et al.'s model and chosen parameters yield numerical results that do not support the conclusion that ambitious climate policies can be conducted without sacrificing (much or any) long-run growth. Second, they select unrealistic key parameters for carbon sinks and elasticity of substitution. We find that more realistic parameters lead to very different results. Third, the model leads to an unrealistic conclusion when used to analyse endogenous growth, suggesting specification problems.
Subjects:Technological Change
Endogenous Growth
Climate
Energy Substitutability
JEL:O30
O33
Q43
Q54
Q56
Document Type:Working Paper
Appears in Collections:FEEM Working Papers, Fondazione Eni Enrico Mattei

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