FEEM working papers "Note di lavoro" series
2011 .081

A Good Opening: The Key to Make the Most of Unilateral Climate Action


Autori: Valentina Bosetti, Enrica De Cian
Serie: Climate Change and Sustainable Development
Editor: Carlo Carraro
Tipo: Journal
Parole chiave: Technology Spillovers, Climate Change, Partial Cooperation
Numero JEL: Q54, Q55, C72
JEL: Environmental and Resource Economics
Pagine: Volume 56, Issue 2, pp 255-276
Data: 10/2013

Abstract

In this paper we argue that when a subgroup of countries cooperate on emission reduction, the optimal response of non-signatory countries reflects the interaction between three potentially opposing factors, the incentive to free-ride on the benefits of cooperation, the incentive to expand the demand of fossil fuels, and the incentive to adopt cleaner technologies introduced by the coalition. Using an Integrated Assessment Model with a game theoretic structure we find that cost-benefit considerations would lead OECD countries to undertake a moderate, but increasing abatement effort (in line with the pledges subscribed in Copenhagen). Even if emission reductions are moderate, OECD countries find it optimal to allocate part of their resources to energy R&D and investments in cleaner technologies. International spillovers of knowledge and technology diffusion then lead to the deployment of these technologies in non-signatory countries as well, reducing their emissions. When the OECD group follows more ambitious targets, such as 2050 emissions that are 50% below 2005 levels, the benefits of technology externalities do not compensate the incentives deriving from the lower fossil fuels prices. This suggests that, when choosing their unilateral climate objective, cooperating countries should take into account the possibility to induce a virtuous behaviour in non-signatory countries. By looking at a two-phase negotiation set-up, we find that free-riding incentives spurred by more ambitious targets can be mitigated by means of credible commitments for developing countries in the second phase, as they would reduce lock-in in carbon intensive technologies.

Suggested citation: Valentina Bosetti, Enrica De Cian, A Good Opening: The Key to Make the Most of Unilateral Climate Action, Environmental and Resource Economics, October 2013, Volume 56, Issue 2, pp 255-276

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