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    Chan, Gabriel, Robert N Stavins, Robert C Stowe, and Richard Sweeney. “The SO2 Allowance Trading System and the Clean Air Act Amendments of 1990: Reflections on Twenty Years of Policy Innovation.” Cambridge, Massachusetts, USA: Harvard Environmental Economics Program, 2012. Publisher's VersionAbstract
    so2-brief.pdf

    The introduction of the U.S. SO2 allowance-trading program to address the threat of acid rain as part of the Clean Air Act Amendments of 1990 is a landmark event in the history of environmental regulation. The program was a great success by almost all measures. This paper, which draws upon a research workshop and a policy roundtable held at Harvard in May 2011, investigates critically the design, enactment, implementation, performance, and implications of this path-breaking application of economic thinking to environmental regulation. Ironically, cap and trade seems especially well suited to addressing the problem of climate change, in that emitted greenhouse gases are evenly distributed throughout the world’s atmosphere. Recent hostility toward cap and trade in debates about U.S. climate legislation may reflect the broader political environment of the climate debate more than the substantive merits of market-based regulation.

    F-29

    Olmstead, Sheila M, and Robert N Stavins. “Three Key Elements of Post-2012 International Climate Policy Architecture.” Cambridge, Massachusetts, USA: Harvard Project on Climate Agreements, 2010. Publisher's VersionAbstract
    stavins_olmsteadmontrealfinal-2.pdf

    We describe three essential elements of an effective post-2012 international global climate policy architecture: a means to ensure that key industrialized and developing nations are involved in differentiated but meaningful ways; an emphasis on an extended time path of targets; and inclusion of flexible market-based policy instruments to keep costs down and facilitate international equity. This architecture is consistent with fundamental aspects of the science, economics, and politics of global climate change; addresses specific shortcomings of the Kyoto Protocol; and builds upon the foundation of the United Nations Framework Convention on Climate Change.

    F-27

    Stavins, Robert N. “Options for the Institutional Venue for International Climate Negotiations.” Cambridge, Massachusetts, USA: Harvard Project on Climate Agreements, 2010. Publisher's VersionAbstract
    stavins-issue-brief-3.pdf

    It is exceptionally challenging to conclude a comprehensive and effective multilateral agreement to address global climate change among nations with divergent interests. This is true for many international issues. However, largely because any domestic policy or set of policies to mitigate greenhouse gas (GHG) emissions (whether intended to implement an international agreement or not) extend so deeply into the economic fabric of a nation, climate change negotiations have proven to be exceptionally difficult. The Fifteenth Conference of the Parties (COP-15) of the United Nations Framework Convention on Climate Change (UNFCCC) reinforced doubts about whether the UNFCCC should continue to be the primary institutional venue for global climate change negotiations. This issue brief assesses some other institutions that might serve to supplement or partially replace the UNFCCC.

    F-26

    Stavins, Robert N. “A Portfolio of Domestic Commitments: Implementing Common but Differentiated Responsibilities.” Cambridge, Massachusetts, USA: Harvard Project on Climate Agreements, 2009. Publisher's VersionAbstract
    domesticcommitments_final.pdf

    International negotiations are focused on developing a climate policy framework for the post-2012 period, when the Kyoto Protocol's first commitment period will have ended. In addition to negotiations under the United Nations Framework Convention on Climate Change (UNFCCC), other intergovernmental outlets, including the G20 and the Major Economies Forum, are trying to reach common ground among the world's major emitters of greenhouse gases. To date, these efforts have not produced a politically, economically, and environmentally viable structure for a future climate agreement. An effective, but more flexible and politically palatable approach could be an international agreement on a "portfolio of domestic commitments." Under such an agreement, nations would agree to honor commitments to greenhouse gas emission reductions laid out in their own domestic laws and regulations. A portfolio of commitments may emerge from a global meeting such as the UNFCCC Conference of the Parties, or a smaller number of major economies could negotiate an agreement among themselves, and then invite other countries to join. Despite the obvious differences between such a system and the conventional "targets and timetables" in the Kyoto Protocol, negotiators should not dismiss this new approach out of hand. There are several ways to construct a portfolio of domestic commitments, and negotiators have numerous levers available to tailor an agreement to meet their political, economic, and environmental goals. This Viewpoint outlines some basic features of a portfolio approach, highlights a few major issues and concerns, and discusses the potential feasibility of this approach.

    F-25

    Jaffe, Judson, and Robert N Stavins. “Linkage of Tradable Permit Systems in International Climate Policy Architecture.” Cambridge, Massachusetts, USA: Harvard Project on Climate Agreements, 2008. Publisher's VersionAbstract
    linkage_paper_hpica.pdf

    Cap-and-trade systems have emerged as the preferred national and regional instrument for reducing emissions of greenhouse gases throughout the industrialized world, and the Clean Development Mechanism — an international emission-reduction-credit system — has developed a substantial constituency, despite some concerns about its performance. Because linkage between tradable permit systems can reduce compliance costs and improve market liquidity, there is great interest in linking cap-and-trade systems to each other, as well as to the CDM and other credit systems. We examine the benefits and concerns associated with various types of linkages, and analyze the near-term and long-term role that linkage may play in a future international climate policy architecture. In particular, we evaluate linkage in three potential roles: as an independent bottom-up architecture, as a step in the evolution of a top-down architecture, and as an ongoing element of a larger climate policy agreement. We also assess how the policy elements of climate negotiations can facilitate or impede linkages. Our analysis throughout is both positive and normative.

    F-24

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