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Regulating Environmental Externalities through Public Firms: A Differential Game

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  • D. Dragone
  • L. Lambertini
  • A. Palestini

Abstract

We investigate the possibility of using public firms to regulate polluting emissions in a Cournot oligopoly where production takes place at constant returns to scale and entails a negative environmental externality. We model the problem as a differential game and investigate (i) the Cournot-Nash game among profit-seeking firms; (ii) the Markov Perfect Nash equilibrium under social planning, where the industry output is entirely controlled by a benevolent planner aiming at the maximisation of social welfare; and (iii) the Markov Perfect Nash equilibrium in a mixed setup where at least one firm is public, while the others remain profit-seeking agents. Our analysis identifies the conditions whereby having a mixed market as a regulatory instrument suffices to drive the industry to the same output, externality and social welfare as under planning, both along the optimal path and in steady state.

Suggested Citation

  • D. Dragone & L. Lambertini & A. Palestini, 2011. "Regulating Environmental Externalities through Public Firms: A Differential Game," Working Papers wp738, Dipartimento Scienze Economiche, Universita' di Bologna.
  • Handle: RePEc:bol:bodewp:wp738
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    References listed on IDEAS

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    1. Benchekroun, Hassan & Van Long, Ngo, 2002. "On the multiplicity of efficiency-inducing tax rules," Economics Letters, Elsevier, vol. 76(3), pages 331-336, August.
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    3. Newbery, David M G, 1990. "Acid Rain," CEPR Discussion Papers 442, C.E.P.R. Discussion Papers.
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    6. Tsur, Yacov & Zemel, Amos, 2002. "The Regulation of Environmental Innovations," Journal of Environmental Economics and Management, Elsevier, vol. 44(2), pages 242-260, September.
    7. L. Lambertini & A. Mantovani & E. Scorcu, 2007. "Collusion Helps Abate Environmental Pollution: A Dynamic Approach," Working Papers 615, Dipartimento Scienze Economiche, Universita' di Bologna.
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    13. Yacov Tsur & Amos Zemel, 2008. "Regulating environmental threats," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 39(3), pages 297-310, March.
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    Blog mentions

    As found by EconAcademics.org, the blog aggregator for Economics research:
    1. Using public firms to regulate the environment
      by Economic Logician in Economic Logic on 2011-04-29 19:46:00

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    Cited by:

    1. F. Delbono & L. Lambertini, 2014. "Nationalization as credible threat against tacit collusion," Working Papers wp972, Dipartimento Scienze Economiche, Universita' di Bologna.
    2. Flavio Delbono & Luca Lambertini, 2016. "Nationalization as Credible Threat Against Collusion," Journal of Industry, Competition and Trade, Springer, vol. 16(1), pages 127-136, March.
    3. M. Fadaee, 2011. "A Dynamic Approach to the Environmental Effects of Trade Liberalization," Working Papers wp746, Dipartimento Scienze Economiche, Universita' di Bologna.
    4. L. Lambertini, 2014. "On the Interplay between Resource Extraction and Polluting Emissions in Oligopoly," Working Papers wp976, Dipartimento Scienze Economiche, Universita' di Bologna.
    5. D. Dragone & L. Lambertini & A. Palestini, 2017. "Emission taxation, green innovations and inverted-U aggregate R&D efforts in a linear state oligopoly game," Working Papers wp2000, Dipartimento Scienze Economiche, Universita' di Bologna.
    6. F. Delbono & L. Lambertini, 2014. "Optimal firm' mix in oligopoly with twofold environmental externality," Working Papers wp955, Dipartimento Scienze Economiche, Universita' di Bologna.

    More about this item

    JEL classification:

    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L32 - Industrial Organization - - Nonprofit Organizations and Public Enterprise - - - Public Enterprises; Public-Private Enterprises
    • Q50 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - General

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