FEEM working papers "Note di lavoro" series
2012 .049

Should We Be Worried About the Green Paradox? Announcement Effects of the Acid Rain Program


Authors: Corrado Di Maria, Ian Lange, Edwin van der Werf
Series: Climate Change and Sustainable Development
Editor: Carlo Carraro
Keywords: Green Paradox, Implementation Lags, Announcement Effects, Climate Policy, Acid Rain Policy
JEL n.: Q31, Q38, Q53, Q54, Q58

Abstract

This paper presents the first empirical test of the green paradox hypothesis, according to which well-intended but imperfectly implemented policies may lead to detrimental environmental outcomes due to supply side responses. We use the introduction of the Acid Rain Program in the U.S. as a case study. The theory predicts that owners of coal deposits, expecting future sales to decline, would supply more of their resource between the announcement of the Acid Rain Program and its implementation; moreover, the incentive to increase supply would be stronger for owners of high-sulfur coal. This would, all else equal, induce an increase in sulfur dioxide emissions. Using data on prices, heat input and sulfur content of coal delivered to U.S. power plants, we find strong evidence of a price decrease, some indication that the amount of coal used might have increased, and no evidence that the announcement of the Acid Rain Program led the use of higher sulfur coal. Overall, our evidence suggests that while the mechanism indicated by the theory might be at work, market conditions and concurrent regulation prevented a green paradox from arising. These results have implications for the design of climate policies.

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