What to Expect at COP-20 in Lima

On Monday, December 1st, the Twentieth Conference of the Parties (COP-20) of the United Nations Framework Convention on Climate Change (UNFCCC) commences in Lima, Peru. Over the next two weeks, delegations from 195 countries will discuss and debate the next major international climate agreement, which – under the auspices of the Durban Platform for Enhanced Action – is to be finalized and signed one year from now at COP-21 in Paris, France.

What to Expect in Lima

Because of the promise made in the Durban Platform to include all parties (countries) under a common legal framework, this is a significant departure from the past two decades of international climate policy, which – since the 1995 Berlin Mandate and the 1997 Kyoto Protocol – have featured coverage of only a small subset of countries, namely the so-called Annex I countries (more or less the industrialized nations, as of twenty years ago).

The expanded geographic scope of the incipient Paris agreement – combined with its emerging architecture in the form of a pragmatic hybrid of bottom-up nationally determined contributions (NDCs) plus top-down elements for monitoring, reporting, verification, and comparison of contributions – represents the greatest promise in many years of a future international climate agreement that is truly meaningful.

A Diplomatic Breakthrough:  The Key Role of the China-USA Announcement

If that confluence of policy developments offers the promise, then it is fair to say that the recent joint announcement of national targets by China and the United States (under the future Paris agreement) represents the beginning of the realization of that promise. From the 14% of global CO2 emissions covered by nations participating (a subset of the Annex I countries) in the Kyoto Protocol’s current commitment period, the future Paris agreement with the announced China and USA NDCs covers more than 40% of global CO2 emissions. With Europe, already on board, the total amounts to more than 50% of emissions.

It will not be long before the other industrialized countries announce their own contributions – some quite possibly in Lima over the next two weeks. More importantly, the pressure is now on the other large, emerging economies – India, Brazil, Korea, South Africa, Mexico, and Indonesia – to step up. Some (Brazil, Korea, Mexico?) may well announce their contributions in Lima, but all countries are due to announce their NDCs by the end of the first quarter of 2015.

The announced China-USA quantitative contributions are themselves significant. For China, capping its emissions by 2030 (at the latest) plus increasing its non-fossil energy generation to 20% by the same year will require very aggressive measures, according to a recent MIT analysis. For the USA, cutting its emissions by 26-28% below the 2005 level by 2025 means doubling the pace of cuts under the country’s previous international commitment.

Thus, the China-USA announcement begins the fulfillment of the promise of the Durban Platform. A sufficient foundation is being established for meaningful future steps, and thereby the likelihood of a successful outcome in Paris has been greatly increased.  The talks in Lima over the next two weeks will produce at least a rough draft of the the Paris agreement, which can then be elaborated and finalized over the coming year, and signed (with abundant photo opportunities for heads of state) in Paris in December, 2015.

Keeping Our Eyes on the Prize

There will be — indeed, already have been — pronouncements of failure of the Lima/Paris talks from some green groups, primarily because the talks will not lead to an immediate decrease in emissions and will not prevent atmospheric temperatures from rising by more than 2 degrees Celsius (3.6 degrees Fahrenheit), which has become an accepted, but essentially unachievable political goal. These well-intentioned advocates mistakenly focus on the short-term change in emissions among participating countries (for example, the much-heralded 5.2% cut by the Annex I countries in the Kyoto Protocol’s first commitment period), when it is the long-term change in global emissions that matters.

In other words, they ignore the geographic scope of participation, and do not recognize that — given the stock nature of the problem — what is most important is long-term action.  Each agreement is no more than one step to be followed by others.  And most important now for ultimate success later is a sound foundation, which is precisely what may finally be provided by the China-USA announced contributions under the Durban Platform structure of a hybrid international policy architecture.

All in all, this may turn out to be among the most important moments in two decades of international climate negotiations. And this means – at a minimum – that the next two weeks in Lima should be very interesting indeed.

Upcoming Events at COP-20 in Lima

As with previous Conferences of the Parties, we – the Harvard Environmental Economics Program and the Harvard Project on Climate Agreements (HPCA) – will be at the Lima talks for their second week, December 7-12. We will be participating in a number of events, and will be holding bilateral meetings with key national delegations.

In all cases, our contributions to the discussions will draw on our compendium of knowledge from our 70 research initiatives in Argentina, Australia, China, Europe, India, Japan, and the United States. Our purpose continues to be to help identify and advance scientifically sound, economically sensible, and politically pragmatic policy options for addressing global climate change.

For those of you who will be in Lima (as well as the rest of you), here is the schedule of COP-20 events that are co-sponsored by HPCA or in which I am participating as HPCA Director. It is going to be a very busy week, but I will try to blog – or at least tweet – about these events and other developments. After I return from Lima, I will follow up with an assessment.


Monday, December 8, 4:45 – 6:15 pm, Room: Machu Picchu

Sponsors: Harvard Project on Climate Agreements, Centre for European Economic Research (ZEW), and Enel Foundation

“Implications of the energy-efficiency gap for reducing greenhouse-gas emissions”

The discussion will be based on our Duke-Harvard research project (sponsored by the Alfred P. Sloan Foundation) on the “energy-efficiency gap”—the apparent difference between predicted and measured rates of adoption of energy-efficiency technology. Panelists will explore the implications of this gap for climate-change mitigation.


Daniele Agostini, Head of Low Carbon Policies and Carbon Regulation, Enel Group

Andreas Löschel, Chair of Microeconomics, and Energy and Resource Economics, University of Münster, and Research Associate, ZEW

Richard Newell, Gendell Professor of Energy and Environmental Economics, Nicholas School of the Environment, Duke University, and Director, Duke University Energy Initiative

Robert Stavins, Director, Harvard Project on Climate Agreements and Albert Pratt Professor of Business and Government, Harvard Kennedy School

Jesus Tamayo Pacheco, President of the Supervisory Body for investment in energy and mines of Peru

See also background paperhttp://belfercenter.ksg.harvard.edu/publication/24749


Tuesday, December 9, 12:00 – 2:00 pm, China Pavilion

Sponsors: National Center for Climate Change Strategy and International Cooperation (NCSC), National Development and Reform Commission (NDRC), People’s Republic of China

“International Cooperation: Towards the 2015 Agreement –A perspective from international think tanks”

This event aims at exchanging ideas from various international think tanks on the design of the 2015 Agreement with consideration of interaction and cooperation of parties on bilateral and multilateral basis, with a view to provide for inputs to the debates of the negotiation of the 2015 Agreement.


H.E. Minister Xie Zhenhua, Head of Chinese Delegation to COP-20 and Vice Chairman, NDRC

Li Junfeng, Director General, NCSC

Zou Ji, Deputy Director, NCSC

Robert Stavins, Director, Harvard Project on Climate Agreements

Du Xiangwan, Former Vice President, Chinese Academy of Engineering

Martin Kohl, President, South Center

Jennifer Morgan, Global Director of Climate Program, World Resources Institute

Teresa Ribera, President, Institute for Sustainable Development and International Relations


Tuesday, December 9, 4:30 – 6:10 pm, International Emissions Trading Association (IETA) Pavilion

“What Role will Markets Play in the 2015 Climate Agreement? How can the Agreement Facilitate Linkage of Carbon Pricing Policies?”


Dirk Forrister, President & CEO, IETA

Robert Stavins, Director, Harvard Project on Climate Agreements

David Hone, Chief Climate Change Adviser, Shell Research

Anna Lindstedt, Ambassador for Climate Change, Government of Sweden

Mary Nichols, Chair, California Air Resources Board

Amber Rudd, Parliamentary Under Secretary of State, Department of Energy and Climate Change, Government of the United Kingdom

See also background paperhttp://belfercenter.ksg.harvard.edu/publication/24568


Thursday, December 11, 11:30 am – 1:00 pm, Room: Caral

Sponsors: International Emissions Trading Association, Arizona State University, Harvard Project on Climate Agreements

“Linkage among climate policies in the 2015 Paris agreement”

Panelists will discuss how the Paris agreement might facilitate or impede linkage among cap-and-trade, carbon tax, and non-market regulatory systems. Panelists will also address related issues involving market mechanisms in the new agreement.


Daniel Bodansky, Foundation Professor of Law, Sandra Day O’Connor College of Law, Arizona State University

Dirk Forrister, President & CEO, IETA

Robert Stavins, Director, Harvard Project on Climate Agreements

Alexia Kelley, Senior Climate Change Advisor, U.S. Department of State

Nathaniel Keohane, Vice President for International Climate, Environmental Defense Fund

Ulrika Raab, Senior Advisor Climate Change, Swedish Energy Agency

See also background paperhttp://belfercenter.ksg.harvard.edu/publication/24568


Remembering Ronald Coase’s Contributions

On September 2nd, Ronald Coase, professor emeritus of economics at the University of Chicago Law School, Nobel laureate, and principal creator of the academic field of law and economics, passed away at the age of 102.  Numerous, lengthy obituaries have appeared in the national and international press.  And in an effective essay posted at the Energy Economics Exchange web site, Severin Borenstein, professor of economics at the University of California, Berkeley, wrote about the effect that Coase’s thinking had decades ago on his own intellectual development (while lamenting that the Wall Street Journal in its own tribute to Coase had twisted the implications of his work to fit the Journal’s view of the world).

The passing of Professor Coase brings to mind an essay I wrote for this blog in July of 2012, in which I recalled that a group of economists and legal scholars had gathered in December, 2010, at the University of Chicago to celebrate two notable events.  One was the fiftieth anniversary of the publication of Ronald Coase’s “The Problem of Social Cost” (Coase 1960).  The other was Professor Coase’s 100th birthday.  The conference resulted in a special issue of The Journal of Law and Economics.

Robert Hahn (of the University of Oxford) and I were privileged to participate in the conference (a video of our presentation is available here).  We recognized that the fiftieth anniversary of the publication of Coase’s landmark study provided an opportunity for us to examine one of that study’s key implications, which is of great importance not only for economics but for public policy as well, in particular, for environmental policy.

The Coase Theorem and the Independence Property

In our article, “The Effect of Allowance Allocations on Cap-and-Trade System Performance,” Hahn and I took as our starting point a well-known result from Coase’s work, namely, that bilateral negotiation between the generator and the recipient of an externality will lead to the same efficient outcome regardless of the initial assignment of property rights, in the absence of transaction costs, income effects, and third party impacts. This result, or a variation of it, has come to be known as the Coase Theorem.

We focused on an idea that is closely related to the Coase theorem, namely, that the market equilibrium in a cap-and-trade system will be cost-effective and independent of the initial allocation of tradable rights (typically referred to as permits or allowances). That is, the overall cost of achieving a given emission reduction will be minimized, and the final allocation of permits will be independent of the initial allocation, under certain conditions (conditional upon the permits being allocated freely, i.e., not auctioned). We called this the independence property. It is closely related to a core principle of general equilibrium theory (Arrow and Debreu 1954), namely, that when markets are complete, outcomes remain efficient even after lump-sum transfers among agents.

The Practical Political Importance of the Independence Property

We were interested in the independence property because of its great political importance.  The reason why this property is of such great relevance to the practical development of public policy is that it allows equity and efficiency concerns to be separated. In particular, a government can set an overall cap of pollutant emissions (a pollution reduction goal) and leave it up to a legislature to construct a constituency in support of the program by allocating shares of the allowances to various interests, such as sectors and geographic regions, without affecting either the environmental performance of the system or its aggregate social costs.  Indeed, this property is a key reason why cap-and-trade systems have been employed and have evolved as the preferred instrument in a variety of environmental policy settings.

In Theory, Does the Property Always Hold?

Because of the importance of this property, we examined the conditions under which it is more or less likely to hold — both in theory and in practice.  In short, we found that in theory, a number of factors can lead to the independence property being violated. These are particular types of transaction costs in cap-and-trade markets; significant market power in the allowance market; uncertainty regarding the future price of allowances; conditional allowance allocations, such as output-based updating-allocation mechanisms; non-cost-minimizing behavior by firms; and specific kinds of regulatory treatment of participants in a cap-and-trade market.

In Reality, Has the Property Held?

Of course, the fact that these factors can lead to the violation of the independence property does not mean that in practice they do so in quantitatively significant ways.  Therefore, Hahn and I also carried out an empirical assessment of the independence property in past and current cap-and-trade systems: lead trading; chlorofluorocarbons (CFCs) under the Montreal Protocol; the sulfur dioxide (SO2) allowance trading program; the Regional Clean Air Incentives Market (RECLAIM) in Southern California; eastern nitrogen oxides (NOX) markets; the European Union Emission Trading Scheme (EU ETS); and Article 17 of the Kyoto Protocol.

I hope some of may find time to read our article, but a quick summary of our assessment is that we found modest support for the independence property in the seven cases we examined (but also recognized that it would surely be useful to have more empirical research in this realm).

Political Judgments

That the independence property appears to be broadly validated provides support for the efficacy of past political judgments regarding constituency building through legislatures’ allowance allocations in cap-and-trade systems. Governments have repeatedly set the overall emissions cap and then left it up to the political process to allocate the available number of allowances among sources to build support for an initiative without reducing the system’s environmental performance or driving up its cost.

This success with environmental cap-and-trade systems should be contrasted with many other public policy proposals for which the normal course of events is that the political bargaining that is necessary to develop support reduces the effectiveness of the policy or drives up its overall cost.  So, the independence property of well-designed and implemented cap-and-trade systems is hardly something to be taken for granted.  It is of real political importance and remarkable social value.  It is just one of many lasting contributions of Ronald Coase.

Economics of the Environment

The Sixth Edition of Economics of the Environment: Selected Readings has just been published by W. W. Norton & Company of New York and London.  Through five previous editions, Economics of the Environment has served as a valuable supplement to environmental economics texts and as a stand-alone book of original readings in the field of environmental economics.  Nearly seven years have passed since the previous edition of this volume was published, and it is now more than three decades since the first edition appeared, edited by Robert and Nancy Dorfman.  The Sixth Edition continues this tradition.

Motivation and Audience

Environmental economics continues to evolve from its origins as an obscure application of welfare economics to a prominent field in its own right, which combines elements from public finance, industrial organization, microeconomic theory, and many other areas of economics.  The number of articles on the environment appearing in mainstream economics periodicals continues to increase, and more and more economics journals are dedicated exclusively to environmental and resource topics.

There has also been a proliferation of environmental economics textbooks for college courses.  Many are excellent, but none can be expected to provide direct access to timely and original contributions by the field’s leading scholars.  As most teachers of economics recognize, it is valuable to supplement the structure and rigor of a text with original readings from the literature.

Scope and Style

With that in mind, this new edition of Economics of the Environment consists of thirty-four chapters that instructors will find to be of great value as a complement to their chosen text and their lectures.  The scope is comprehensive, and the list of authors is a veritable “who’s who” of environmental economics, including:  Joseph Aldy, Kenneth Arrow, Trudy Cameron, Ronald Coase, Maureen Cropper, Peter Diamond, George Eads, Jeffrey Frankel, Rick Freeman, Don Fullerton, Lawrence Goulder, John Graham, Robert Hahn, Michael Hanemann, Jerry Hausman, Steven Kelman, Nathaniel Keohane, Alan Krupnick, Lester Lave, John Livernois, Eric Maskin, Leonardo Maugeri, Gilbert Metcalf, Richard Newell, Roger Noll, William Nordhaus, Wallace Oates, Sheila Olmstead, Elinor Ostrom, Karen Palmer, Ian Parry, Carl Pasurka, Robert Pindyck, William Pizer, Michael Porter, Paul Portney, Forest Reinhardt, Richard Revesz, Milton Russell, Michael Sandel, Richard Schmalensee, Steven Shavell, Jason Shogren, Kerry Smith, Robert Solow, Nicholas Stern, Laura Taylor, Richard Vietor, and myself.

The articles are timely, with more than 90 percent published since 1990, and half since 2005.  There are two completely new sections of the book, “Economics of Natural Resources” and “Corporate Social Responsibility,” and all of the chapters in the section on global climate change are new to the sixth edition.

In order to make the readings in Economics of the Environment accessible to students at all levels, one criterion I use in the selection process is that articles should not only be original and well written — and meet the highest standards of economic scholarship — but also be non-technical in their presentations.  Hence, readers will find virtually no formal mathematics in any of the book’s 34 chapters throughout its 733 pages.

The Path Ahead

Environmental economics is a rapidly evolving field.  Not only do new theoretical models and improved empirical methods appear on a regular basis, but entirely new areas of investigation open up when the natural sciences indicate new concerns or the policy world turns to new issues.  Therefore, this book remains a work in progress.  I owe a great debt to the teachers and students of previous editions who have sent their comments and suggestions for revisions.  Looking to future editions, I invite all readers — whether teachers, students, or practitioners — to send me any thoughts or suggestions for improvement.

In the meantime, if you’re interested finding out more about the book, immediately below is a chapter-by-chapter summary of the book.  Alternatively, you can check out the W. W. Norton or Amazon web sites.


Appendix:  A Summary of Economics of the Environment, Sixth Edition

Part I of the volume provides an overview of the field and a review of its foundations.  Don Fullerton and I start things off with a brief essay about how economists think about the environment (Nature 1998).  This is followed by the classic treatment of social costs and bargaining by Ronald Coase (Journal of Law and Economics 1960), and a new article by Jason Shogren and Laura Taylor on the important, emerging field of behavioral environmental economics (Review of Environmental Economics and Policy 2008).

The Costs of Environmental Protection

Part II examines the costs of environmental protection, which might seem to be without controversy or current analytical interest.  This is not, however, the case.  This section begins with a survey article by Carl Pasurka that reviews the theory and empirical evidence on the relationship between environmental regulation and so-called “competitiveness” (Review of Environmental Economics and Policy 2008).

A somewhat revisionist view is provided by Michael Porter and Class van der Linde, who suggest that the conventional approach to thinking about the costs of environmental protection is fundamentally flawed (Journal of Economic Perspectives 1995).  Karen Palmer, Wallace Oates, and Paul Portney provide a careful response (Journal of Economic Perspectives 1995).

The Benefits of Environmental Protection

In Part III, the focus turns to the other side of the analytic ledger — the benefits of environmental protection.  This is an area that has been even more contentious — both in the policy world and among scholars.  Here the core question is whether and how environmental amenities can be valued in economic terms for analytical purposes.

The book features a provocative debate on the stated-preference method known as “contingent valuation.”  Paul Portney outlines the structure and importance of the debate, Michael Hanemann makes the affirmative case, and Peter Diamond and Jerry Hausman provide the critique (all three articles are from the Journal of Economic Perspectives 1994).

In the final article in Part III, the book turns to a concept that is both very important in assessments of the benefits of environmental regulations and is also very widely misunderstood — the value of a statistical life.  In an insightful essay, Trudy Cameron seeks to set the record straight (Review of Environmental Economics and Policy 2010).

There are two principal policy questions that need to be addressed in the environmental realm:  how much environmental protection is desirable; and how should that degree of environmental protection be achieved.  The first of these questions is addressed in Part IV and the second in Part V.

The Goals of Environmental Policy:  Economic Efficiency and Benefit-Cost Analysis

In an introductory essay, Kenneth Arrow, Maureen Cropper, George Eads, Robert Hahn, Lester Lave, Roger Noll, Paul Portney, Milton Russell, Richard Schmalensee, Kerry Smith, and I ask whether there is a role for benefit-cost analysis to play in environmental, health, and safety regulation (Science 1996).

Then, Lawrence Goulder and I focus on an ingredient of benefit-cost analysis that non-economists seem to find particularly confusing, or even troubling — intertemporal discounting (Nature 2002).  Next, Robert Pindyck examines a subject of fundamental importance — the role of uncertainty in environmental economics (Review of Environmental Economics and Policy 2007).  Steven Kelman provides an ethically-based critique of benefit-cost analysis, which is followed by a set of responses (Regulation 1981).

Part IV concludes with an up-to-date essay by John Graham on the critical role of the U.S. Office of Management and Budget in federal regulatory impact analysis (Review of Environmental Economics and Policy 2008).

The Means of Environmental Policy:  Cost Effectiveness and Market-Based Instruments

Part V examines the policy instruments — the means — that can be employed to achieve environmental targets or goals.  This is an area where economists have made their greatest inroads of influence in the policy world, with tremendous changes having taken place over the past twenty  years in the reception given by politicians and policy makers to so-called market-based or economic-incentive instruments for environmental protection.

Lawrence Goulder and Ian Parry start things off with a broad-ranging essay on instrument choice in environmental policy (Review of Environmental Economics and Policy 2008).  Following this, I examine lessons that can be learned from the innovative sulfur dioxide allowance trading program, set up by the Clean Air Act Amendments of 1990 (Journal of Economic Perspectives 1998).  Finally, Michael Sandel provides a critique of market-based instruments, with responses offered by Eric Maskin, Steven Shavell, and others (New York Times 1997).

Economics of Natural Resources

Part VI consists of three essays on a new topic for this book — the economics of natural resources.  First, John Livernois examines the empirical significance of a central tenet in natural resource economics, namely the Hotelling Rule — the proposition that under conditions of efficiency, the scarcity rent (price minus marginal extraction cost) of natural resources will rise over time at the rate of interest (Review of Environmental Economics and Policy 2009).

Essays by Leonardo Maugeri (Review of Environmental Economics and Policy 2009) and Sheila Olmstead (Review of Environmental Economics and Policy 2010), respectively, examine two particularly important resources:  petroleum and water.

The next four sections of the book treat some timely and important topics and problems.

Corporate Social Responsibility and the Environment

Part VII examines corporate social responsibility and the environment, discussion of which has too often been characterized by more heat than light.  Forest Reinhardt, Richard Vietor, and I provide an overview of this realm from the perspective of economics, examining the notion of firms voluntarily sacrificing profits in the social interest.  In a second essay, Paul Portney provides a valuable empirical perspective (both are from the Review of Environmental Economics and Policy 2008).

Global Climate Change

Part VIII is dedicated to investigations of economic dimensions of global climate change, which may in the long term prove to be the most significant environmental problem that has arisen, both in terms of its potential damages and in terms of the costs of addressing it.  First, a broad overview of the topic is provided in a survey article by Joseph Aldy, Alan Krupnick, Richard Newell, Ian Parry, and William Pizer (Journal of Economic Literature 2010).

Next, William Nordhaus critiques the well-known Stern Review on the Economics of Climate Change, and Nicholas Stern and Chris Taylor respond (both are from Science 2007).  In the final essay in this section, Gilbert Metcalf examines market-based policy instruments that can be used to address greenhouse gas emissions (Journal of Economic Perspectives 2009).

Sustainability, the Commons, and Globalization

Part IX begins with Robert Solow’s economic perspective on the concept of sustainability.  This is followed by Elinor Ostrom’s development of a general framework for analyzing sustainability (Science 2009), and my own historical view of economic analysis of problems associated with open-access resources (American Economic Review 2011).  Then, Jeffrey Frankel draws on diverse sources of empirical evidence to examine whether globalization is good or bad for the environment (Council on Foreign Relations 2004).

Economics and Environmental Policy Making

The final section of the book, Part X, departs from the normative concerns of much of the volume to examine some interesting and important questions of political economy.  It turns out that an economic perspective can provide useful insights into questions that might at first seem to be fundamentally political.

Nathaniel Keohane, Richard Revesz, and I utilize an economic framework to ask why our political system has produced the particular set of environmental policy instruments it has (Harvard Environmental Law Review 1998).  Myrick Freeman reflects on the benefits that U.S. environmental policies have brought about since the first Earth Day in 1970 (Journal of Economic Perspectives 2002).  Lastly, Robert Hahn addresses the question that many of the articles in this volume raise:  what impact has economics actually had on environmental policy (Journal of Environmental Economics and Management 2000)?