What Did (and Did Not) Happen at COP-25 Climate Talks in Madrid?

I recently returned from the climate negotiations in Madrid (the twenty-fifth Conference of the Parties – COP-25 – of the United Nations Framework Convention on Climate Change), and as I have done in previous years, I would like to provide you with my brief perspective on the outcome.  This year that means commenting both on what did and did not happen.

A Very Quick Overview

The press has characterized the Madrid climate talks in rather stark terms – as a failure, in contrast with the inspirational calls from youth activists and others for greater ambition.  For example, Somini Sengupta, writing in The New York Times, characterized COP-25 as “widely denounced as one of the worst outcomes in a quarter-century of climate negotiations …”  As usual, reality is somewhat more nuanced.

On the one hand, the inability of the climate negotiations to produce an aspirational statement calling for greater ambition in the next round of national pledges is not terribly significant in terms of its real effects, despite the fact that some members of civil society – ranging from Greenpeace to Extinction Rebellion – have framed this as the key task for COP-25.  On the other hand, there was a significant unfulfilled objective of the negotiations, namely writing meaningful rules (for Article 6.2 of the Paris Agreement) that would help facilitate global carbon markets.  As I explain below, this was indeed a significant disappointment, but not the fatal failure that some have portrayed it to be.

So, there is good news and bad news.  I will begin with the latter.

But before I turn to the substance, I will note for the record that we – the Harvard Project on Climate Agreements – were busy at COP-25, including:  five speaking engagements focused on two topics – national and sub-national carbon-pricing policies (carbon taxes and emissions trading), and international linkage and the critical role of Article 6 of the Paris Agreement); and podcasts with key observers and participants in the negotiations (Andrei Marcu on December 8th and Paul Watkinson on December 11th).

The Bad News

From my recent essay at this blog just before I departed for Madrid (What to Expect at COP-25 in Madrid, December 5th), you know that a key task for COP-25 was to complete the so-called Rulebook on Article 6, in particular, Article 6.2, which can potentially  facilitate international carbon markets and other forms of cross-border cooperation.

As I have said before, there are two necessary conditions for ultimate success of the Paris Agreement.  First is adequate scope of participation.  This has been achieved, with meaningful participation from countries representing some 98% of global emissions – or some 85% if the U.S. withdraws in November, 2020 (compared with the 14% of global emissions from countries committed to emissions reductions under the current, second commitment period of the Kyoto Protocol).

The other necessary condition is adequate ambition of the individual national contributions.  But the very element of the Paris Agreement that fostered such broad scope of participation – namely, that the individual national “pledges” (Nationally Determined Contributions or NDCs) are anchored in national circumstances and domestic political realities – implies that individual contributions may not be sufficient, due to the global commons nature of the climate change problem, and the attendant free-rider issues.

So, the challenge has been to identify ways to enable and facilitate increased ambition over time (not just to issue calls for greater ambition, but to devise ways of actually facilitating it).  Linkage of regional, national, and sub-national policies can be an important part of the answer – connections among policy systems that allow emission reduction efforts to be redistributed across systems.  Such linkage can bring down costs tremendously (in theory, to as little as 25% of what those costs otherwise would be), and thereby provide the latitude for countries to increase their ambition.

If such bilateral linkages among countries are to be correctly reflected when tallying countries’ emissions relative to their NDCs under the Paris Agreement, then the Agreement needs to include a robust accounting mechanism.  The obvious and clear home for this was (and is) Article 6.2, which provides for Internationally Transferred Mitigation Outcomes (ITMOs) and Corresponding Adjustments, which together can function as the international accounting mechanism to correctly reflect a multiplicity of international private-sector exchanges (under various international, intergovernmental linkages).  The negotiators needed to outline some brief and simple rules for double-entry bookkeeping.

Unfortunately, due to the insistence by Brazil and a few other countries for accounting loopholes that “would weaken transparency and mask emissions in a way that would undermine the integrity of the accord,” it turned out be impossible to reach agreement on Article 6.2, even after more than two weeks of extensive discussions and intense negotiations, which pushed the COP-25 proceedings 40 hours past their scheduled conclusion.

The Not-So-Bad News

This may sound like a rather technical, albeit unmet objective of COP-25, and that is not an unfair characterization.  But the press has focused on something else altogether, namely the demand from some countries – principally the smallest and some of the poorest nations – for an official decision at COP-25 endorsing significantly greater ambition than what is currently codified in the aggregation of the first round of NDCs under the Paris Agreement.  Such a consensus decision was not forthcoming, and that has been labeled as the great failure of the Madrid talks.

But how important is such an aspirational (even inspirational) statement of ambition, compared with putting in place sound rules to achieve the ambition to which the parties have already agreed?  As Nathaniel Keohane of the Environmental Defense Fund recently wrote, “If merely adding “ambition” to a UN decision made a difference to what nations do, we would have solved the climate crisis long before COP-25.  What matters to actual ambition is the operational substance of the decision.”

The very strong press attention to the lack of an official decision regarding increased ambition at COP-25 was no doubt brought about, at least in part, by the forceful youth activists who have focused their energies on the urgency of what is characterized as the climate emergency, rather than on the hard and sometimes technical work of improving public policies, whether at the international, national, or sub-national level.  Surely, Swedish high school student Greta Thunberg’s speeches have been inspirational, as were Al Gore’s exhortations not very many years ago, but the primary outputs in Madrid were disruptive protests inside the conference (which led to the expulsion of some of the youth activists, and the temporary barring of all members of civil society), and the dumping of manure outside the conference venue.

The Good News

It is very important to understand that although clear accounting rules under Article 6.2 would be very helpful, they are decidedly not necessary for the successful execution and operation of bilateral international linkages and consequent carbon markets.  Let me explain.

There are three distinct but closely related levels of relevant policy action.  First, national (or regional) governments can establish emission-reduction policies, including carbon taxes, cap-and-trade systems, and performance standards.  Second, these jurisdictions can link their policy instruments through mutual recognition of permits, allowances, or credits via bilateral agreements.  This allows trade among private-sector compliance entities of these units across international borders, which facilitates lower-cost achievement of the aggregate target.  But such transfers of emission reduction responsibilities and actions ought to be correctly counted toward compliance with respective NDCs under the Paris Agreement.  This is where Article 6 comes in!

In other words, the ITMOs of Article 6.2 would potentially be units of accounting for Corresponding Adjustments, not a medium of exchange for government-government purchase and sale.  Thus, international linkages among heterogeneous policies in different countries can continue to be executed, as they already have, and international carbon markets can and will proceed to grow!

It is surely unfortunate that the Madrid negotiators did not capitalize on their opportunity to define clear and consistent guidance for accounting for emissions transfers under Article 6.2, because such a robust accounting framework would increase confidence in successful linkages of climate policies across jurisdictions.  But if the guidance had extended much beyond basic accounting rules – such as implicit taxes on cooperation via what have been termed “share of proceeds” and “net global emission reduction” – then restrictive requirements would actually impede effective linkage, and thereby drive up compliance costs.

As Teresa Ribera, Minister for the Ecological Transition of Spain, observed at COP-25, “no deal is better than a bad deal” on carbon markets and Article 6.  Countries can now proceed to develop their own rules for international linkages that can foster high-integrity carbon markets.

 

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A Second Podcast Discussion from the UN Climate Negotiations in Madrid

Greetings once again from Madrid!  In addition to my speaking engagements and meetings here at COP-25 (What to Expect at COP-25 in Madrid), I’m recording discussions with some key individuals participating in the climate talks who can provide substantial insight.

Today, I offer up my discussion Paul Watkinson, Chair of the Subsidiary Body for Scientific and Technological Advice (SBSTA) within the United Nations Framework Convention on Climate Change (UNFCCC).   He provides a valuable review and assessment of the latest developments at the UN Climate Change conference (COP-25) in a new episode of “Environmental Insights: Discussions on Policy and Practice from the Harvard Environmental Economics Program.”  You can listen to the interview and discussion here.

 

Watkinson has been closely involved in international climate change negotiations for many years, and in the discussion he expresses his hopes and expectations for agreement in Madrid this week on a mechanism designed to accurately measure the performance of the signatories to the Paris Climate Agreement of 2016 in cases in which the parties have transferred emissions amongst one another under the Agreement’s Article 6.

The discussion with Watkinson is the fourth episode in the Environmental Insights series, and the second recorded at COP-25 in Madrid, the first being an interview with Andrei Marcu, founder and executive director of the European Roundtable on Climate Change and Sustainable Transition, released on December 8th.

Let me remind you that our very first episode of “Environmental Insights” featured my interview with Gina McCarthy, former Administrator of the U.S. Environmental Protection Agency (who is leaving Harvard to become President of the Natural Resources Defense Council).  Our second episode featured Nick Stern of the London School of Economics discussing his career, British politics, and efforts to combat climate change.

Overall, “Environmental Insights” is intended to inform and educate listeners about important issues relating to an economic perspective on developments in environmental policy, including the design and implementation of market-based approaches to environmental protection.  In hosting these podcast episodes, I interview interesting and accomplished people who are working at the intersection of economics and environmental policy.

“Environmental Insights” is hosted on SoundCloud, and is also available on iTunes, Pocket Casts, Spotify, and Stitcher.

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What to Expect at COP-25 in Madrid

The “Rulebook” for the Paris Agreement puts flesh on the bones of the skeletal 13-page Agreement, and was completed last year at COP-24 in Katowice, Poland, with the exception of one very important part of the Agreement, namely Article 6, which potentially  provides for international carbon markets and other forms of cross-border cooperation.  Watch for key developments in Madrid!

Key Challenge for Long-Term Success of Paris Agreement

There are two necessary conditions for ultimate success of the Paris Agreement.  First, adequate scope of participation.  This has been achieved, with meaningful participation from countries representing some 98% of global emissions – or some 85% if the U.S. withdraws in November, 2020 (compared with the 14% of global emissions from countries committed to emissions reductions under the current, second commitment period of the Kyoto Protocol).  The other necessary condition is adequate ambition of the individual national contributions.  This is where the greatest challenges lie.

The very element of the Paris Agreement that has fostered such broad scope of participation – namely, that the individual national “pledges” (Nationally Determined Contributions or NDCs) are anchored in national circumstances and domestic political realities – implies that individual contributions may not be sufficient, due to the global commons nature of the climate change problem, and the attendant free-rider issues.

So, are there ways to enable and facilitate increased ambition over time?  Linkage of regional, national, and sub-national policies can be part of the answer – connections among policy systems that allow emission reduction efforts to be redistributed across systems.  Linkage is typically framed as between cap-and-trade systems, but regional, national, and sub-national policies will be highly heterogeneous.  More about this below.

Merits and Concerns regarding Linkage

Linkage facilitates significant compliance cost savings by allowing firms to take advantage of lower cost abatement opportunities in other jurisdictions.  According to one recent study, costs could – in theory – be reduced to 25% of what they otherwise would be!  Also, linkage means improved functioning of markets by reducing market power and price volatility, and there are political benefits to linking parties as a sign of momentum when political jurisdictions band together.  Another advantage is administrative economies of scale.  Finally and very importantly, linkage allows for the UNFCCC’s key equity principle of “common but differentiated responsibilities and respective capabilities” (CBDR) to be achieved without sacrificing cost-effectiveness.

There are also some legitimate concerns about policy linkage.  First, there are distributional impacts, both in the form of redistribution within jurisdictions, and redistribution across jurisdictions.  Such impacts are politically problematic.  There is also the automatic propagation of some design elements, in particular, the cost-containment elements of banking and price collars which propagate from one linked system to another.  For that matter, weak design in one jurisdiction affects prices and quality in all linked jurisdictions.  And price shocks can propagate through linked jurisdictions.  Finally, there is decreased autonomy, as rules are set jointly by all linked parties.

Linkage and the Paris Agreement

There are three distinct but closely related levels of relevant policy action.  First, national (or regional) governments can establish emission-reduction policies, including carbon taxes, cap-and-trade systems, and performance standards.  Second, these jurisdictions can link their policy instruments through mutual recognition of permits, allowances, or credits via bilateral agreements.  This allows trade of these units across international borders, which facilitates lower-cost achievement of the aggregate target.  But such transfers of emission reduction responsibilities and actions need to be correctly counted toward compliance with respective NDCs under the Paris Agreement.  This is where Article 6 comes in!

In particular, Article 6.2 provides for Internationally Transferred Mitigation Outcomes (ITMOs) and Corresponding Adjustments, which together can function as the international accounting mechanism to correctly reflect a multiplicity of international private-sector exchanges (under various international linkages).

In other words, I view ITMOs as units of accounting for Corresponding Adjustments, not as a medium of exchange for government-government purchase and sale.  Otherwise, Article 6.2 would become equivalent to the Kyoto Protocol’s Article 17 (international emissions trading), and will fail as that did, because governments are not cost-minimizing agents, and lack requisite information even if they were (Hahn & Stavins, “What Has the Kyoto Protocol Wrought? The Real Architecture of International Tradeable Permit Markets,” 1999).

Is Heterogeneity a Challenge for Linkage?

Yes, it can be.  There are three major categories of heterogeneity that can pose challenges to effective international policy linkage under the Paris Agreement.  First, there are heterogeneous policy instruments:  cap-and-trade; tradable performance standards; emission reduction credits (offsets); taxes; and performance standards.  Second, there are heterogeneous jurisdictions and geographic scope:  regional, national, and sub-national; and status under the Paris Agreement (Party and non-Party).  Third, the NDC targets themselves area highly heterogeneous:  hard (mass-based) emissions caps; relative mass-based emissions caps (relative to BAU); rate-based emissions caps (per unit of economic activity or per unit of output); and non-emissions caps, such as some degree of penetration of renewable energy sources.  Also, there are differences in base year, target year, sectors, GHGs, estimated global warming potential, and conditionality.

Is Linkage Among Such Heterogeneous Policies Feasible or Wise?

With Michael Mehling (MIT) and Gilbert Metcalf (Tufts University), I have carried out research on heterogeneous linkage and the Paris Agreement (“Linking Climate Policies to Advance Global Mitigation.” Science 359, 2018).  Among our major findings is the following.  Most features of heterogeneity do not present insurmountable obstacles to linkage, but some present real challenges, and indicate the need for specific accounting guidance to avoid double-counting.    Article 6.2 provides an obvious home for this accounting guidance (Schneider, Duan, Stavins, Kizzier, Broekhoff, Jotzo, Winkler, Lazarus, Howard, and Hood.  “Double counting and the Paris Agreement rulebook.”  Science 366, 2019).

The Outlook for Heterogeneous Linkage under Article 6.2 of the Paris Agreement

The negotiators in Madrid have an opportunity to define clear and consistent guidance for accounting for emissions transfers under Article 6.2.  A robust accounting framework can foster successful linkages of climate policies across jurisdictions.  But if guidance extends much beyond basic accounting rules – such as implicit taxes on cooperation via what have been termed “share of proceeds” and “net global emission reduction” – then restrictive requirements will impede effective linkage, and thereby drive up compliance costs.  True to the spirit of the Paris Agreement, less may be more!

So, a combination of sensible common accounting rules and absence of restrictive criteria and conditions can accelerate linkage, allow for broader and deeper climate policy cooperation, and – most important – thereby increase the latitude of Parties to scale up the ambition of their NDCs.

Only time – and the work of the delegates in Madrid – will tell.

 The Harvard Project on Climate Agreements at COP-25

Along with my Harvard colleagues, Joseph Aldy, Robert Stowe, and Jason Chapman, I will be at the Twenty-Fifth Conference of the Parties (COP-25) of the United Nations Framework Convention on Climate Change (UNFCCC) in Madrid, Spain, leading our delegation from the Harvard Project on Climate Agreements (HPCA), December 8-11, 2019.

In addition to holding a series of bilateral meetings with various national delegations, I will participate in at least four events.  Two of these are panel sessions organized by HPCA, while the two others are panel sessions organized by national delegations.  Our team will be at COP-25 during the week of December 8-12, 2019.  COP-25 attendees who wish to meet with the Harvard Project during the conference should send an email Jason Chapman, Project Manager (jason_chapman@hks.harvard.edu).

Four Events in Brief

 Reducing Greenhouse Gas Emissions through Carbon Pricing:  Recent Research, Analysis, and Experience
Robert Stavins, Moderator and Panelist; Joseph Aldy, Panelist; Hosted by Harvard Project on Climate Agreements, Enel Foundation, and Tsinghua University Global Climate Change Institute; Monday, December 9, 2019; 11:30 am – 1:00 pm; Location:  Side Event Room 3

The Seventh Global Climate Change Think Tank Forum:  The Latest Developments in Climate Change Economics
Robert Stavins, Presenter; Hosted by China National Center for Climate Change Strategy and International Cooperation; Tuesday, December 10, 2019;  6:00 pm – 7:30 pm; Location:  China Pavilion

 Realizing the Potential of Article 6 of the Paris Agreement
Robert Stavins, Moderator and Panelist; Joseph Aldy, Panelist; Hosted by the Harvard Project on Climate Agreements; Wednesday, December 11, 2019;  12:30 pm – 2:00 pm; Location:  Pavilion of the International Emissions Trading Association (IETA)

 Enhancing Capacity of Developing Countries to Address Climate Change: Issues and Opportunities
Robert Stavins, Keynote Speaker; Hosted by Korea University, Green Asia, Center for Climate and Sustainable Development Law and Policy, Global Green Growth Institute, UNDP Seoul Policy Centre, UN Office for Sustainable Development; Wednesday, December 11, 2019;  3:00 pm – 4:30 pm; Location:  Korea Pavilion

 Two Harvard Project Events in Detail

 Reducing Greenhouse Gas Emissions through Carbon Pricing:  Recent Research, Analysis, and Experience

Monday, 9 December, 2019; 11:30am – 1:00pm, Location: Side Event Room 3

Speakers will present recent research and analysis of carbon-pricing policy to reduce greenhouse-gas emissions. The panel will give some attention to experience and prospects in South America and to China’s emerging national system. A new research paper by Robert Stavins on the relative merits of cap and trade and carbon taxes will provide a basis for much of the discussion.

Speakers: Joseph Aldy, Harvard University; Simone Mori, Enel; Raffaele Mauro Petriccione, Director General of DG Climate Action in the European Commission; Robert Stavins, Harvard University; Zhang Xiliang, Tsinghua University; government representatives to be invited.

Realizing the Potential of Article 6

Wednesday, 11 December 2019; 12:30pm – 2:00pm; Location:  Pavilion of the International Emissions Trading Association (IETA)

Panelists will discuss the potential of Article 6 to decrease mitigation costs and incentivize increased ambition. They will review the status of the negotiations on the Article 6 rulebook, including issues remaining to be resolved at that point in the COP – including potentially, ongoing discussion about double counting (environmental integrity) and the Article 6 – Article 13 interface (applications of the enhanced transparency framework to Article 6 transfers).

Panelists: Joseph Aldy, Harvard Kennedy School; Kay Harrison, Ministry of Foreign Affairs and Trade, New Zealand; Kelley Kizzier, Environmental Defense Fund; Andrei Marcu, European Roundtable on Climate and Sustainable Transition; Robert Stavins, Harvard Kennedy School

The Path Ahead

After COP-25, I will post an essay at this blog assessing the progress (or lack thereof) made in Madrid – on Article 6, as well as other elements and issues.

In the meantime, if you will be at COP-25, and would like to meet with the Harvard Project on Climate Agreements, please contact Jason Chapman (jason_chapman@hks.harvard.edu).

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