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    Carraro, Carlo, Ottmar Edenhofer, Christian Flachsland, Charles Kolstad, Robert N. Stavins, and Robert Stowe. “The IPCC at a Crossroads: Opportunities for Reform.” Science 350 (2015): 34–35. Publisher's VersionAbstract

    The Intergovernmental Panel on Climate Change (IPCC) has proven its value as an institution for large-scale scientific collaboration to synthesize and assess large volumes of climate research for use by policy-makers, as well as for establishing credibility of findings among diverse national governments. But the IPCC has received considerable criticism of both its substance and process. The new IPCC leadership to be elected in October could help guide the IPCC to a clear, shared understanding of future objectives and could shape procedural reforms. We identify key opportunities for reform by addressing two related questions: Is the IPCC doing the right things? Is the IPCC doing things right?

    A-85

    Newell, Richard G, Adam B Jaffe, and Robert N Stavins. “The Induced Innovation Hypothesis and Energy-Saving Technological Change.” The Quarterly Journal of Economics 114 (1999): 941 –975. Publisher's VersionAbstract

    We develop a methodology for testing Hicks's induced innovation hypothesis by estimating a product-characteristics model of energy-using consumer durables, augmenting the hypothesis to allow for the influence of government regulations. For the products we explored, the evidence suggests that (i) the rate of overall innovation was independent of energy prices and regulations; (ii) the direction of innovation was responsive to energy price changes for some products but not for others; (iii) energy price changes induced changes in the subset of technically feasible models that were offered for sale; (iv) this responsiveness increased substantially during the period after energy-efficiency product labeling was required; and (v) nonetheless, a sizable portion of efficiency improvements were autonomous.

    A-28

    Jaffe, Adam B, and Robert N Stavins. “The Energy-Efficiency Gap: What Does It Mean?Energy Policy 22 (1994): 804–810. Publisher's VersionAbstract

    As renewed attention has been given by policy makers to energy conservation issues, it has frequently been asserted that an energy-efficiency gap exists between actual and optimal energy use. The critical questions is how to define the optimal level of energy efficiency. This paper seeks to disentangle some confusing strands of argument that are frequently brought to bear on this question, by identifying the major conceptual issues that determine the set of feasible answers. We identify five separate and distinct notions of optimality: the economists' economic potential, the technologists' economic potential, hypothetical potential, the narrow social optimum and the true social optimum. Each of these has associated with it a corresponding definition of the energy-efficiency gap. Our analysis demonstrates that necessary preconditions for identifying the right measure of the energy-efficiency gap include understanding and disentangling market failure and non-market failure explanations for the gradual diffusion of energy-efficient technologies.

    A-14

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