Using a Policy Mix for Pollution Control – A Review of Economic Literature

This article provides a review of economic studies analyzing the use of multiple policies – a socalled policy mix – to cope with single pollution problems. To guide and structure the review, an analytical framework is developed and applied. The framework integrates transaction costs into the analysis of pollution problems and policies to overcome them. Moreover, it understands a pollution externality not only as a market failure but more generally as the failure of private governance structures. Based on this insight, two rationales for using a policy mix are identified. First, a policy mix may help to correct for multiple reinforcing failures of private governance structures, such as pollution externalities and technological spillovers. Second, a policy mix can be employed if the implementation of single first-best policies brings about high transaction costs – e.g., when marginal pollution damages are heterogeneous or polluters are unlikely to comply with the policy. For each rationale, the relevant literature is presented. Based on the review, avenues for future research are identified.policy mix, review, environmental policy, pollution control, externality, transaction costs, Coase

Using a policy mix for pollution control: A review of economic literature

This article provides a review of economic studies analyzing the use of multiple policies - a socalled policy mix - to cope with single pollution problems. To guide and structure the review, an analytical framework is developed and applied. The framework integrates transaction costs into the analysis of pollution problems and policies to overcome them. Moreover, it understands a pollution externality not only as a market failure but more generally as the failure of private governance structures. Based on this insight, two rationales for using a policy mix are identified. First, a policy mix may help to correct for multiple reinforcing failures of private governance structures, such as pollution externalities and technological spillovers. Second, a policy mix can be employed if the implementation of single first-best policies brings about high transaction costs - e.g., when marginal pollution damages are heterogeneous or polluters are unlikely to comply with the policy. For each rationale, the relevant literature is presented. Based on the review, avenues for future research are identified. --policy mix,review,environmental policy,pollution control,externality,transaction costs,Coase

Combining emissions trading and emissions taxes in a multi-objective world

The combination of emissions trading and emissions taxes is usually rejected as redundant or inefficient. This conclusion is based on the restrictive assumption that both policies are exclusively meant to control pollution. However, particularly taxes may pursue a variety of other policy objectives as well, such as raising fiscal revenues or promoting equity. Multiple objectives may justify multiple policies. In this case, welfare losses with respect to pollution control may be traded off by benefits from attaining other policy objectives. Consequently, pragmatic policy recommendations have to be based on an in-depth understanding of interactions in the policy mix. This article makes three contributions that are relevant in this respect. (1) The most important factors distorting pollution abatement under the policy mix are identified. This insight is required to estimate the actual extent of inefficiency in controlling pollution, and to compare it with benefits of attaining other objectives of the tax. (2) The policy mix is not only compared to the unrealistic ideal of an efficient single emissions trading scheme but also to a suboptimal heterogeneous emissions tax. It is shown that if the tax is required to address multiple policy objectives, the implementation of an emissions trading scheme in addition may in fact increase the efficiency of pollution control. (3) It is demonstrated that welfare losses can be minimized within a policy mix by modifying emissions trading design. --policy mix,emissions trading,emissions tax,efficiency

An economic evaluation of the U.S. Conservation Reserve Program

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Making water affordable to all: A typology and evaluation of options for urban water pricing

An important criterion for the design of urban water prices is the affordability of water supply for poor customers. This paper presents a typology of water pricing options which policy-makers have at their disposal in order to address affordability. A review of theoretical insights and empirical experiences reveals, however, how the real-world performance of these options depends on the characteristics of their technological and socio-economic environment. Moreover, possible trade-offs between affordability and other criteria, including efficiency, financial sustainability and administrative simplicity, are pointed out. Thereby, the paper is meant to assist policy-makers in identifying water pricing options which are appropriate for their context. --administrative simplicity,affordability,efficiency,financial sustainability,typology,water pricing

Climate policies with pollution externalities and learning spillovers

Economic theory suggests that with a pollution externality and learning spillovers related to renewable energy technologies, the optimal climate policy mix includes an emissions policy and an output subsidy to the learning industry. Instead of output subsidies, feed-in tariffs are often implemented in addition to emissions policies. This paper reveals that this policy mix may theoretically provide for a first-best outcome as well. However, its efficient design may be cumbersome for regulators. An emissions tax must be below the Pigovian level and differentiate between fossil fuels. Moreover, both tax and feed-in tariff must be adapted continuously. --Emissions tax,feed-in tariffs,policy mix,spillovers,learning by doing

Climate Policies with Pollution Externalities and Learning Spillovers

Economic theory suggests that with a pollution externality and learning spillovers related to renewable energy technologies, the optimal climate policy mix includes an emissions policy and an output subsidy to the learning industry. Instead of output subsidies, feed-in tariffs are often implemented in addition to emissions policies. This paper reveals that this policy mix may theoretically provide for a first-best outcome as well. However, its efficient design may be cumbersome for regulators. An emissions tax must be below the Pigovian level and differentiate between fossil fuels. Moreover, both tax and feed-in tariff must be adapted continuously.emissions tax, feed-in tariffs, policy mix, spillovers, learning by doing

Why should support schemes for renewable electricity complement the EU emissions trading scheme?

In virtually all EU Member States, the EU Emissions Trading Scheme (EU ETS) is complemented by support schemes for electricity generation from renewable energy sources (RES-E). This policy mix has been subject to strong criticism. It is mainly argued that RES-E schemes contribute nothing to emissions reduction and undermine the cost-effectiveness of the EU ETS. Consequently, many scholars suggest the abolition of RES-E schemes. However, this conclusion rests on quite narrow and unrealistic assumptions about the design and performance of markets and policies. This article provides a systematic and comprehensive review and discussion of possible rationales for combining the EU ETS with RES-E support schemes. The first and most important reason may be restrictions to technology development and adoption. These may be attributed to the failure of markets as well as policies, and more generally to the path dependency in socio-technical systems. Under these conditions, RES-E schemes are required to reach sufficient levels of technology development. In addition, it is highlighted that in contrast to the EU ETS RES-E support schemes may provide benefits beyond mitigating climate change. --EU Emissions Trading System,market failure,path dependency,policy failure,policy mix,renewable energies,subsidies

the case of Lima, Peru

Water pricing can be understood as an important root of water quantity and water quality problems in developing countries – but also as a possible solution to them. This paper proposes an analytical framework to understand challenges related to pricing water supply and sanitation. The framework rests on three criteria: efficiency, cost-recovery and affordability. It highlights that the actual effects of water pricing do not only depend on its design but also on the institutional and technical environment it is embedded in. The framework is used to identify and analyze challenges to water pricing for the case of water supply and sanitation system in Lima, Peru