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The Timing of Environmental Policy: A Note on the Role of Product Differentiation

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  • Poyago-Theotoky, Joanna
  • Teerasuwannajak, Khemarat

Abstract

We examine the role that product differentiation can play in the design of environmental policy under full commitment and no commitment on the part of the environmental regulator. We consider a setting with two firms selling a differentiated product which generates pollution through emissions. Firms can reduce their emissions by undertaking abatement activities while an environmental regulator taxes emissions. The main results are: (1) When products are highly differentiated, the optimal time-consistent (no commitment) tax is always lower than the optimal pre-commitment tax. As the degree of product differentiation decreases, for relatively efficient abatement technology and high damages, the time-consistent emission tax exceeds the optimal pre-commitment one. (2) Abatement when product differentiation is extensive is higher under the time-consistent regime unless the abatement technology is extremely efficient. The same ranking applies to social welfare. However, as products become more and more similar, these results are (partially) reversed and pre-commitment could lead to both higher levels of abatement and welfare. Copyright 2002 by Kluwer Academic Publishers

Suggested Citation

  • Poyago-Theotoky, Joanna & Teerasuwannajak, Khemarat, 2002. "The Timing of Environmental Policy: A Note on the Role of Product Differentiation," Journal of Regulatory Economics, Springer, vol. 21(3), pages 305-316, May.
  • Handle: RePEc:kap:regeco:v:21:y:2002:i:3:p:305-16
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    Cited by:

    1. Moner-Colonques, R. & Rubio, S., 2015. "The timing of environmental policy in a duopolistic market," Economia Agraria y Recursos Naturales, Spanish Association of Agricultural Economists, vol. 0(Number 01).
    2. Joanna Poyago-Thotoky, 2003. "Optimal Environmental Taxation, R&D Subsidization and the Role of Market Conduct," Finnish Economic Papers, Finnish Economic Association, vol. 16(1), pages 15-26, Spring.
    3. Leal, Mariel & Garcia, Arturo & Lee, Sang-Ho, 2018. "The Timing Of Environmental Tax Policy With A Consumer-Friendly Firm," Hitotsubashi Journal of Economics, Hitotsubashi University, vol. 59(1), pages 25-43, June.
    4. repec:eee:transe:v:113:y:2018:i:c:p:170-193 is not listed on IDEAS
    5. Tohru Naito & Hikaru Ogawa, 2009. "Direct versus indirect environmental regulation in a partially privatized mixed duopoly," Environmental Economics and Policy Studies, Springer;Society for Environmental Economics and Policy Studies - SEEPS, vol. 10(2), pages 87-100, June.
    6. Ouchida, Yasunori & Goto, Daisaku, 2016. "Environmental research joint ventures and time-consistent emission tax: Endogenous choice of R&D formation," Economic Modelling, Elsevier, vol. 55(C), pages 179-188.
    7. repec:taf:apeclt:v:23:y:2016:i:5:p:324-331 is not listed on IDEAS
    8. repec:gam:jeners:v:10:y:2017:i:12:p:2026-:d:121239 is not listed on IDEAS
    9. Yasunori Ouchida & Daisaku Goto, 2016. "Cournot duopoly and environmental R&D under regulator’s precommitment to an emissions tax," Applied Economics Letters, Taylor & Francis Journals, vol. 23(5), pages 324-331, March.
    10. Garcia, Arturo & Leal, Mariel & Lee, Sang-Ho, 2018. "Time-inconsistent environmental policies with a consumer-friendly firm: tradable permits versus emission tax," MPRA Paper 86407, University Library of Munich, Germany.
    11. Yasunori Ouchida & Daisaku Goto, 2012. "What is the socially desirable formation of environmental R&D?," IDEC DP2 Series 2-6, Hiroshima University, Graduate School for International Development and Cooperation (IDEC).
    12. repec:kap:jeczfn:v:122:y:2017:i:1:d:10.1007_s00712-017-0531-y is not listed on IDEAS
    13. Luis Gautier, 2013. "Multilateral and unilateral policy reform of emission taxes and abatement subsidies in a two-country model with oligopolistic interdependence," Environmental Economics and Policy Studies, Springer;Society for Environmental Economics and Policy Studies - SEEPS, vol. 15(1), pages 59-71, January.
    14. Ouchida, Yasunori & Goto, Daisaku, 2014. "Do emission subsidies reduce emission? In the context of environmental R&D organization," Economic Modelling, Elsevier, vol. 36(C), pages 511-516.
    15. Brécard, Dorothée & Hlaimi, Boubaker & Lucas, Sterenn & Perraudeau, Yves & Salladarré, Frédéric, 2009. "Determinants of demand for green products: An application to eco-label demand for fish in Europe," Ecological Economics, Elsevier, vol. 69(1), pages 115-125, November.
    16. Lambert Schoonbeek & Frans Vries, 2009. "Environmental taxes and industry monopolization," Journal of Regulatory Economics, Springer, vol. 36(1), pages 94-106, August.
    17. Dorothée Brécard, 2013. "Environmental Quality Competition and Taxation in the Presence of Green Network Effect Among Consumers," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 54(1), pages 1-19, January.

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