Assessment of U.S. Cap-and-Trade Proposals
The MIT Emissions Prediction and Policy Analysis model is applied to synthetic policies that match key attributes of a set of cap-and-trade proposals being considered by the U.S. Congress in spring 2007. The bills fall into two groups: one specifies emissions reductions of 50% to 80% below 1990 levels by 2050; the other establishes a tightening target for emissions intensity and stipulates a time-path for a "safety valve" limit on the emission price that approximately stabilizes U.S. emissions at the 2008 level. Initial period prices are estimated between $7 and $50 per ton CO2-e with these prices rising by a factor of four by 2050. Welfare costs vary from near zero to less than 0.5% at the start, rising in the most stringent case to near 2% in 2050. If allowances were auctioned these proposals could produce revenue between $100 billion and $500 billion per year depending on the case. Outcomes from U.S. policies depend on mitigation effort abroads, and simulations are provided to illuminate terms-of-trade effects that influence the emissions prices and welfare effects, and even the environmental effectiveness, of U.S. actions. Sensitivity tests also are provided of several of key design features. Finally, the U.S. proposals, and the assumptions about effort elsewhere, are extended to 2100 to allow exploration of the potential role of these bills in the longer-term challenge of reducing climate change risk. Simulations show that the 50% to 80% targets are consistent with global goals of atmospheric stabilization at 450 to 550 ppmv CO2 but only if other nations, including the developing countries, follow suit.
|Date of creation:||Jun 2007|
|Date of revision:|
|Publication status:||published as "An Analysis of U.S. Greenhouse Gas Cap- and-Trade Proposals Us ing a Forward-Looking Economic Model," Environment and Development Economics, 16:2 (2011): 155 - 176 (with Angelo Gurgel, Sergey Paltsev, and John Reilly)|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
Web page: http://www.nber.org
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- Jacoby, Henry D. & Ellerman, A. Denny, 2004. "The safety valve and climate policy," Energy Policy, Elsevier, vol. 32(4), pages 481-491, March.
- Henry D. Jacoby & Richard S. Eckaus & A. Denny Ellerman & Ronald G. Prinn & David M. Reiner & Zili Yang, 1997. "CO2 Emissions Limits: Economic Adjustments and the Distribution of Burdens," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3), pages 31-58.
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