On the Relation between Dual-Rate Discounting and Substitutability
AbstractTo justify substantial emission reductions, recent literature on cost-benefit analysis of climate change suggests discounting environment consumption with an environmental discount rate instead of a consumption discount rate that is usually used in cost-benefit analysis. The present study clarifies that whether or not this dual-rate discounting approach succeeds in justifying substantial emission reductions depends on whether or not environment and goods consumption are substitutes in the Hicks-Allen sense and in the Edgeworth-Pareto sense (substitutes in the Hicks-Allen sense implies the Hicksian goods demand to be increasing in the relative price of environmental goods, while substitutes in the Edgeworth-Pareto sense implies the marginal utility of goods consumption to be decreasing in environment consumption). Moreover, a low intratemporal elasticity of substitution between environment and goods consumption within a period contributes to a low environmental discount rate in comparison to the consumption discount rate, while a low intertemporal elasticity of substitution between composite consumption of different periods contributes to declining discount rates over time. --
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Bibliographic InfoPaper provided by Kiel Institute for the World Economy in its series Economics Discussion Papers with number 2009-10.
Date of creation: 2009
Date of revision:
Discounting; dual-rate discounting; environmental discount rate; cost-benefit analysis; climate change;
Find related papers by JEL classification:
- Q28 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Government Policy
- H43 - Public Economics - - Publicly Provided Goods - - - Project Evaluation; Social Discount Rate
- D90 - Microeconomics - - Intertemporal Choice and Growth - - - General
This paper has been announced in the following NEP Reports:
- NEP-ALL-2009-03-14 (All new papers)
- NEP-ENE-2009-03-14 (Energy Economics)
- NEP-ENV-2009-03-14 (Environmental Economics)
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