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Risk and Return in Environmental Economics

Research and Teaching Output of the MIT Community

Show simple item record Pindyck, Robert S. 2012-08-06T21:01:31Z 2012-08-06T21:01:31Z 2012-07
dc.description.abstract I examine the risk/return tradeoff for environmental investments, and its implications for policy choice. Consider a policy to reduce carbon emissions. To what extent does the value of such a policy depend on the expected future damages from global warming versus uncertainty over those damages, i.e., on the expected benefits from the policy versus their riskiness? And to what extent should the policy objective be a reduction in the expected temperature increase versus a reduction in risk? Using a simple model of a stock externality (e.g., temperature) that evolves stochastically, I examine the “willingness to pay” (WTP) for alternative policies that would reduce the expected damages under “business as usual” (BAU) versus the variance of those damages. I also show how one can compute “iso-WTP” curves (social indifference curves) for combinations of risk and expected returns as policy objectives. Given cost estimates for reducing risk and increasing expected returns, one can compute the optimal risk-return mix for a policy, and the policy’s social surplus. I illustrate these results by calibrating the model to data for global warming. en_US
dc.language.iso en_US en_US
dc.publisher MIT CEEPR en_US
dc.relation.ispartofseries CEEPR Working Papers;2012-010
dc.rights An error occurred on the license name. en
dc.rights.uri An error occurred getting the license - uri. en
dc.title Risk and Return in Environmental Economics en_US
dc.type Working Paper en_US
dc.identifier.citation CEEPR-WP-2012-010 en_US

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