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Abstract:
Since January 1st the European Union has launched an EU-internal emissions trading scheme (EU ETS) for emission-intensive installations as the central pillar to comply with the Kyoto Protocol. The EU ETS may be linked at some time to a Kyoto emissions market where greenhouse gas emission allowances of signatory Kyoto countries can be traded. In this paper we investigate the implications of Russian market power for environmental effectiveness and regional compliance costs to the Kyoto Protocol taking into account potential linkages between the Kyoto emissions market and the EU ETS. We find that Russia may have incentives to join the EU ETS as long as the latter remains separated from the Kyoto international emissions market. In this case, Russia can exert monopolistic price discrimination between two separated markets thereby maximizing revenues from hot air sales. The EU will be able to substantially reduce compliance costs when it does not restrain itself to EU-internal emission regulation schemes. However, part of the gains from extra-EU emissions trading will come at the expense of environmental effectiveness as (more) hot air will be drawn in.

market power, hot air, climate policy

Abstract:
The Climate action and renewable energy package proposed by the European Commission in the beginning of 2008 suggests auctioning as basic principle for allocation for the upcoming third trading phase of the EU Emissions Trading Scheme that runs from 2013 to 2020. Overall, it is estimated that at least two third of the total quantity of allowances will be auctioned in 2013, to be increased to 100 % by 2020. In this paper, we emphasize the importance of a properly chosen auction design as the significantly higher auction share, compared to the past and current trading phase, is expected to yield a thin secondary market for CO2 allowances. We elaborate main criteria that a viable auction design is supposed to fulfil and propose a specific auction design for the third trading phase. The auction we recommend is a simultaneous dynamic uniform double auction.

climate policy, emissions trading, auction design

Abstract:
We present a simple two-steps procedure for a within-subject test of the inequity aversion model of Fehr and Schmidt (1999). In the first step, subjects played modified ultimatum and dictator games and were classified according to their preferences. In the second step, subjects with specific preferences according to the Fehr and Schmidt model were matched into pairs and interacted with each other in a standard public good game and a public good game with punishment possibility. Our results show that the specific composition of groups significantly influences the subjects' performance in the public good games. We identify the aversion against advantageous inequity and the information about the coplayer's type as the main influencing factors for the behavior of subjects.

individual preferences, inequity aversion, experimental economics, public goods

Abstract:
Without participation of the United States, the world's largest emitter of greenhouse gases, mitigation of global climate change seems hardly conceivable. Despite the U.S. rejection of the Kyoto Protocol and the reluctance of the Bush administration to engage in Post-Kyoto negotiations, recent developments suggest that the U.S. position towards climate policy might change in the medium run. This study provides an overview on current trends in U.S. climate policy. Besides the main elements of national climate policy proposals and state-level initiatives the climate contents in the U.S. presidential candidates' agendas are outlined. Based on this overview recent trends in U.S. climate policy are related to the European approach to combat climate change. Furthermore, we elaborate on the aspects which may be important for Europe to design its own domestic and international climate policy in order to achieve the long-term goal of stabilizing greenhouse gas concentrations.

environmental regulation, climate policy, emissions trading

Abstract:
According to the model of HOEL (1991), a unilateral emissions abatement of a global pollutant leads to lower aggregated emissions in a game with a simultaneous decision protocol. Our experiment tests the Hoel model and examines the question of whether a leader can induce additional abatement of followers in a game with a mixed sequential-simultaneous decision protocol. Using an environment with a unique interior equilibrium, our experiments confirm the stylized outcomes of previous public good experiments. Changes in abatement and profits for the simultaneous decision protocol are in line with the theoretical predictions of the Hoel model albeit not significantly in every case. In the treatments with a mixed sequential-simultaneous decision protocol, during the first periods an abatement near social optimum is mostly chosen by the leader. However, in most cases the leader failed to induce cooperation, i.e. there are few followers who react cooperatively to the leader's signal. High efforts by the leader and the cooperative followers are exploited by the majority of defective followers.

Abstract:
This paper investigates in how far equity preferences may matter for climate negotiations. For this purposes we conducted a simple experiment with people who have been involved in international climate policy. The experiment, which was run via the Internet, consisted of two simple non-strategic games suited to measure the parameters of inequity aversion in a Fehr and Schmidt (1999) utility function. We find that our participants show aversion against advantageous as well as disadvantageous inequity to a considerable amount. Moreover, the degree of inequity aversion is higher compared to that of students in the similar study of Dannenberg et al. (2007). Regarding the geographical variety in our sample, we cannot confirm significant differences in the degree of inequity aversion between different regions in the world, which is in line with previous findings from the experimental literature. This finding lends support to the hypothesis that equity preferences are "hard-wired" and not much influenced by socio-economic or cultural circumstances.

individual preferences, inequity aversion, climate policy, experimental economics, public goods

Abstract:
Opponents of the voluntary labeling scheme for genetically modified (GM) food products often argue that consumers have the right to know and therefore advocate mandatory labeling. In this paper we argue against this line of reasoning. Using experimental auctions conducted with a sample of the resident population of Mannheim, Germany, we show that the quality of the informational signal generated by a mandatory labeling scheme is affected by the number of labels in the market. If there are two labels, one for GM products and one for non-GM products, mandatory and voluntary labeling schemes generate a similar degree of uncertainty about the quality of products that do not carry a label.

labeling, genetically modified foods, consumer preferences, experimental auctions

Abstract:
It is not only the great number of papers written on environment economics that make it worth dealing with this special branch of experimental research, but the environmental problem in all its facets seems to serve as a catalyst for identifying some methodological problems of the experimental method. For this reason, we will not only try to give an overview of recent experiments in environmental economics but also add some thoughts on the methodological implications of this work. We identify three direct connecting factors for the experimental method and environmental economics. First, social dilemmas are, in many cases, at the core of environmental problems. Experiments are able to test theoretical hypotheses for individual behavior in such social dilemma situations. The second connecting factor comes from the field of applied experimental work and can be characterized as the testbedding of institutional arrangements for the solution of environmental problems. The last direct application of experimental methods to environmental economics concerns the individual evaluation of environmental resources.

Abstract:
Adaptation to climate change is becoming increasingly important in the political and scientific debate. The reason for this is that climate change impacts are visible already today and will intensify in the next decades. Furthermore, the prospects for an effective international agreement on climate policy with binding emission reduction targets are uncertain. The economic analysis of adaptation, however, is still in its infancy with a few economic studies covering specific aspects of adaptation. Therefore, this paper aims at developing a broad economic framework for adaptation which can provide a foundation and a starting point for future economic research. The economic analysis allows us to distinguish between autonomous adaptation by private agents on the one hand and collective adaptation measures by government entities on the other. Our theoretical economic approach follows the basic economic paradigm of efficient competitive markets where government intervention is justified by market failure only. The most important case of market failure in adaptation is the provision of public goods, such as dykes or weather information systems. Moreover, we discuss further political objectives, namely equity and security of supply, in the context of adaptation to climate change. The approach developed in the theory part is then applied to the case of Germany. Due to its size and geography as well as its relatively diversified sectoral structure Germany is a good example to analyze and develop adaptation measures in climate sensitive sectors in industrialized countries, particularly in Europe. The case study on Germany which is based on the available literature covers sectors that are particularly vulnerable to climate change, namely agriculture, energy, water and coastal protection, and human health. While from an economic perspective adaptation in agriculture and energy should predominantly be autonomous, the government has a role in the sectors water, coastal protection and health. The results indicate that in Germany beside the negative impacts of climate change positive impacts are to be expected in some sectors, such as agriculture. Therefore a differentiated adaptation strategy by consumers, producers, and policy makers requires more research into the climate impacts on different sectors of life and the economy.

climate change, adaptation, market failure, insurance