FEEM working papers "Note di lavoro" series
2012 .099

Carbon Taxes, Path Dependency and Directed Technical Change: Evidence from the Auto Industry


Authors: Philippe Aghion, Antoine Dechezleprêtre, David Hemous, Ralf Martin and John Van Reenen
Series: Climate Change and Sustainable Development
Editor: Carlo Carraro
Keywords: Climate Change, Innovation, Directed Technical Change, Automobiles
JEL n.: O3, O13, L62

Abstract

Can directed technical change be used to combat climate change? We construct new firm-level panel data on auto industry innovation distinguishing between “dirty” (internal combustion engine) and “clean” (e.g. electric and hybrid) patents across 80 countries over several decades. We show that firms tend to innovate relatively more in clean technologies when they face higher tax-inclusive fuel prices. Furthermore, there is path dependence in the type of innovation both from aggregate spillovers and from the firm's own innovation history. Using our model we simulate the increases in carbon taxes needed to allow clean to overtake dirty technologies.

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