On the Effects of Linking Cap-and-Trade Systems for $$\hbox {CO}_{2}$$CO2 Emissions

Bjart Holtsmark and Martin Weitzman

Environmental & Resource Economics, 2020, vol. 75, issue 3, No 8, 615-630

Abstract: Abstract Linkage of national cap-and-trade systems is typically advocated by economists on a general analogy with the beneficial linkage of free-trade areas and on the specific grounds that linkage will ensure cost effectiveness among the linked jurisdictions. The paper analyses the less obvious effects of linkage with the bottom–up approach of the Paris Agreement where each country sets its nationally determined contribution for its own carbon dioxide ($$\hbox {CO}_{2}$$CO2) emissions. An appropriate and widely accepted specification for the damages of $$\hbox {CO}_{2}$$CO2 emissions within a relatively short (say 5–10 year) period is that marginal damages for each jurisdiction are constant (although they can differ among jurisdictions). With this defensible assumption, the analysis is significantly clarified and yields simple closed-form expressions for all $$\hbox {CO}_{2}$$CO2 permit prices. Some implications for linked and unlinked voluntary $$\hbox {CO}_{2}$$CO2 cap-and-trade systems are derived and discussed. A numerical example illustrates the results.

Keywords: Cap and trade; Climate change; Linkage; Paris agreement; Pollution (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s10640-020-00401-8

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