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Título: Optimal Environmental Policy for a Polluting Monopoly with Abatement Costs: Taxes Versus Standards
Autor: Martín-Herrán, Guiomar
Rubio, Santiago
Año del Documento: 2018
Descripción: Producción Científica
Documento Fuente: Environmental Modelling & Assessment 23(6), 671-689
Resumen: In this paper, we characterize the optimal environmental policy for a polluting monopoly that devotes resources to abatement activities when damages are caused by a stock pollutant. With this aim, we calculate the stagewise feedback Stackelberg equilibrium of a (differential) policy game where the regulator is the leader and the monopolist is the follower. Our analysis shows that the first-best policy consists of applying a Pigouvian tax and a subsidy on production equal to the difference between the price and the marginal revenue. However, for a stock pollutant, the Pigouvian tax is not equal to the marginal damages but is given by the difference between the social and private valuation of the pollution stock. On the other hand, if a second-best emission tax is used, the tax is lower than the Pigouvian tax and the difference decreases with the price elasticity of the demand. Finally, we find that taxes and standards are equivalent in a second-best setting. In the second part of the paper, we solve a linear-quadratic differential game and we obtain that the first-best tax increases with the pollution stock whereas the subsidy decreases. Moreover, the tax is negative for low values of the pollution stock, i.e., for low values of the pollution stock, we obtain that the social valuation of the stock is lower than the private valuation. Furthermore, when a second-best policy is applied, the steady-state pollution stock is lower than the steady-state pollution stock associated with the efficient outcome.
Revisión por Pares: SI
Idioma: eng
Derechos: info:eu-repo/semantics/openAccess
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Aparece en las colecciones:DEP20 - Artículos de revista

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