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Policies to reduce emissions of greenhouse gases also have impacts on other policy goals, especially health. In some cases, these ancillary effects may be more significant than the direct greenhouse gas reduction impacts. While these relationships are generally recognised, analysis of climate policies does not systematically include them in policy design and selection. In March 2000, a workshop gathered leading edge analysts on this topic from around the world. These proceedings include analytic frameworks for ancillary effects, empirical results on the type and nature of ancillary effects, and discussion on the role of ancillary effects analysis in improved policy processes. These proceedings are a valuable reference for anyone seeking to develop integrated policies to meet a range of policy objectives simultaneously.

AbstractPolicies designed to control greenhouse gases imply domestic tradeoffs and international externalities, which lead to both domestic and international conflicts, influencing their feasibility and implementations. Our paper investigates two quantitative aspects within this debate. We intend to quantify the impact of: (a) the internalization of international externalities; and (b) the damage associated with a short-term view of climate policies. In this respect, we adopt the innovative (in this field) idea of model predictive control to formalize moving-horizon policy strategies and, thus, to build counterfactuals characterized by a different horizon for all policymakers.

Most policy instruments to reduce greenhouse gas (GHG) emissions have focused on producers, and on the energy efficiency of buildings, vehicles and other products. Behavioural changes related to climate change also impact 'in-use' emissions, and potentially, emissions both 'upstream' (including from imported goods) and 'downstream' (eg disposal). Consumption-oriented policies may provide avenues to additional and cost-effective emission reductions, but are less prevalent, in part because of political sensitivities around government efforts to shape individual-level mitigation behaviour. In this paper, we explore policy instruments for encouraging low carbon behaviour in the EU context. Drawing on a literature survey and interviews, as part of the EU Carbon-CAP project, we develop a list of 33 potential instruments, present a systematic methodology for assessing their potential impact and feasibility, and apply this to rank instruments of most interest. Most instruments involve a clear trade-off between their potential impact and feasibility; about half feature in the top three scoring categories, many being voluntary approaches, which may be easier to implement, but with limited or highly uncertain impact. However, we identify a handful of top-scoring instruments that deserve far more policy attention. The complexity of consumer and corporate motivations and behaviours suggests that instruments should be trialled and monitored (e.g. in regions / individual States) before widespread introduction. Most would also be most effective when nested within wider policy packages, to address the varied behavioural motivations and stages of supply chains.