Optimal Public Policy in a Schumpeterian Model of Endogenous Growth with Environmental Pollution

Meeta Mehra () and Sujata Basu ()

Review of Market Integration, 2013, vol. 5, issue 2, 203-248

Abstract: The article utilises a model of endogenous growth with vertical innovation (á la Aghion–Howitt) to examine how the inclusion of a production-related pollution externality affects the prospect for long-run growth of a closed economy. It is derived that the social optimum exhibits the possibility of long-run sustainable growth, such that consumption, capital stock and output grow without bound, knowledge also grows in an unbounded fashion, and both—the intensity and stock of pollution—fall. In comparison, at the unregulated market equilibrium, a clear conflict arises between sustaining economic growth and environment protection, as growing pollution stock ceases the opportunity for long run growth in output, capital stock and consumption. Finally, in deriving the optimal public policy tool-kit, given the distortions in the unregulated market economy, it is shown that a positive and growing rate of tax on pollution, an ad valorem subsidy on capital and a positive R and D subsidy would implement the socially desirable outcome. However, a theoretical possibility of an optimal tax on R and D cannot be ruled out in an exceptional situation of too low a productivity of the R and D sector.

Keywords: Endogenous growth; growth-environment trade-off; innovation; optimal public policy; pollution externality; vertically-differentiated inputs (search for similar items in EconPapers)
Date: 2013
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Working Paper: Optimal Public Policy in a Schumpeterian Model of Endogenous Growth with Environmental Pollution (2012)
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Persistent link: https://EconPapers.repec.org/RePEc:sae:revmar:v:5:y:2013:i:2:p:203-248

DOI: 10.1177/0974929214521894

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