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Climate Coalitions: A Theoretical and Computational Appraisal


  • Thierry Bréchet

    (Université Catholique de Louvain)

  • François Gerard

    (Center for Operations Research and Econometrics (CORE) and Université Catholique de Louvain)


Using an updated version of the CWS model (introduced by Eyckmans and Tulkens in Resource and Energy Economics 2003), this paper intends to evaluate with numbers the respective merits of two competing notions of coalition stability in the standard global public goods model as customarily applied to the climate change problem. After a reminder of the model structure and of the definition of the two game theoretical stability notions involved – namely, core stability and internal-external stability, the former property is shown to hold for the grand coalition in the CWS model only if resource transfers of a specific form between countries are introduced. It is further shown that while the latter property holds neither for the grand coalition nor for most large coalitions, it is nevertheless verified in a weak sense that involves transfers (dubbed “potential internal stability”) for most small coalitions. The reason for this difference is brought to light, namely the differing rationale that inspires the transfers in either case. Finally, it is shown that the stable coalitions that perform best (in terms of carbon concentration and global welfare) are always composed of both industrialized and developing countries. Two sensitivity analyses confirm the robustness of all these results.

Suggested Citation

  • Thierry Bréchet & François Gerard, 2007. "Climate Coalitions: A Theoretical and Computational Appraisal," Working Papers 2007.21, Fondazione Eni Enrico Mattei.
  • Handle: RePEc:fem:femwpa:2007.21

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    References listed on IDEAS

    1. Henry, TULKENS & Parkash, CHANDER, 2006. "Cooperation, stability and self-enforcement in interational environmental agreements : a conceptual discussion," Discussion Papers (ECON - Département des Sciences Economiques) 2006003, Université catholique de Louvain, Département des Sciences Economiques, revised 15 Jan 2006.
    2. Carlo Carraro & Johan Eyckmans & Michael Finus, 2006. "Optimal transfers and participation decisions in international environmental agreements," The Review of International Organizations, Springer, vol. 1(4), pages 379-396, December.
    3. Henry Tulkens & Parkash Chander, 1997. "The Core of an Economy with Multilateral Environmental Externalities," International Journal of Game Theory, Springer;Game Theory Society, vol. 26(3), pages 379-401.
    4. Barrett, Scott, 1994. "Self-Enforcing International Environmental Agreements," Oxford Economic Papers, Oxford University Press, vol. 46(0), pages 878-894, Supplemen.
    5. Johan Eyckmans & Michael Finus, 2004. "An Almost Ideal Sharing Scheme for Coalition Games with Externalities," Energy, Transport and Environment Working Papers Series ete0414, KU Leuven, Department of Economics - Research Group Energy, Transport and Environment.
    6. Claude d'Aspremont & Alexis Jacquemin & Jean Jaskold Gabszewicz & John A. Weymark, 1983. "On the Stability of Collusive Price Leadership," Canadian Journal of Economics, Canadian Economics Association, vol. 16(1), pages 17-25, February.
    7. Carraro, Carlo & Siniscalco, Domenico, 1993. "Strategies for the international protection of the environment," Journal of Public Economics, Elsevier, vol. 52(3), pages 309-328, October.
    8. Eyckmans, Johan & Tulkens, Henry, 2003. "Simulating coalitionally stable burden sharing agreements for the climate change problem," Resource and Energy Economics, Elsevier, vol. 25(4), pages 299-327, October.
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    Cited by:

    1. Porchiung Chou & Cheickna Sylla, 2008. "The formation of an international environmental agreement as a two-stage exclusive cartel formation game with transferable utilities," International Environmental Agreements: Politics, Law and Economics, Springer, vol. 8(4), pages 317-341, December.
    2. Bosetti, Valentina & Carraro, Carlo & De Cian, Enrica & Massetti, Emanuele & Tavoni, Massimo, 2013. "Incentives and stability of international climate coalitions: An integrated assessment," Energy Policy, Elsevier, vol. 55(C), pages 44-56.
    3. Thierry Bréchet & Carmen Camacho & Vladimir M. Veliov, 2012. "Adaptive Model-Predictive Climate Policies in a Multi-Country Setting," Documents de travail du Centre d'Economie de la Sorbonne 12029, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
    4. BRECHET, Thierry & THENIE, Julien & ZEIMES, Thibaut & ZUBER, Stéphane, 2010. "The benefits of cooperation under uncertainty: the case of climate change," CORE Discussion Papers 2010062, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    5. Jørgensen, Steffen, 2010. "A dynamic game of waste management," Journal of Economic Dynamics and Control, Elsevier, vol. 34(2), pages 258-265, February.

    More about this item


    Climate Change; Coalitions; Simulation; Integrated Assessment;

    JEL classification:

    • C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • D9 - Microeconomics - - Micro-Based Behavioral Economics
    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • F42 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - International Policy Coordination and Transmission
    • Q2 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation

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