The Climate Risk Premium: How Uncertainty Affects the Social Cost of Carbon

University of Arizona Department of Economics Working Paper 15-01

60 Pages Posted: 4 Feb 2015 Last revised: 17 Apr 2020

See all articles by Derek Lemoine

Derek Lemoine

University of Arizona - Department of Economics

Date Written: April 6, 2020

Abstract

I analyze the marginal value of reducing greenhouse gas emissions (the "social cost of carbon") under uncertainty about warming, under uncertainty about how much warming reduces consumption, and under stochastic shocks to consumption growth. I theoretically demonstrate that each of these sources of uncertainty increases the social cost of carbon under conventional preferences. In a calibrated numerical implementation, uncertainty increases the 200-year social cost of carbon by more than 20%. Uncertainty about the consumption impacts of warming contributes the most to this premium and makes the social cost of carbon sensitive to impacts even after 2400.

Keywords: climate, uncertainty, risk, insurance, precautionary saving, prudence, externality, emission, carbon

JEL Classification: E21, G12, H23, Q54, Q58

Suggested Citation

Lemoine, Derek, The Climate Risk Premium: How Uncertainty Affects the Social Cost of Carbon (April 6, 2020). University of Arizona Department of Economics Working Paper 15-01, Available at SSRN: https://ssrn.com/abstract=2560031 or http://dx.doi.org/10.2139/ssrn.2560031

Derek Lemoine (Contact Author)

University of Arizona - Department of Economics ( email )

McClelland Hall
Tucson, AZ 85721-0108
United States

HOME PAGE: http://www.dereklemoine.com/

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