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Soft and hard price collars in a cap-and-trade system: A comparative analysis

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Listed:
  • Fell, Harrison
  • Burtraw, Dallas
  • Morgenstern, Richard D.
  • Palmer, Karen L.

Abstract

We use a stochastic dynamic framework to compare price collars (price ceilings and floors) in a cap-and-trade system with uncertainty in the level of baseline emissions and costs. We consider soft collars, which provide limited volume of additional emission allowances (a reserve) at the price ceiling, and hard collars, which provide an unlimited supply of additional allowances, thereby preventing allowance prices from exceeding the price ceiling. Conversely, allowances are removed from the market if prices fall to the floor. We find that increasing the size of the reserve strictly lowers expected net present values of compliance costs; however, there is a diminishing effect as the allowance reserve is expanded. Most of the expected cost savings are achieved with a modest reserve. Consequently, a rather limited soft price collar could provide considerable assurance about cost while preventing the possibility that emissions could spiral out of control.

Suggested Citation

  • Fell, Harrison & Burtraw, Dallas & Morgenstern, Richard D. & Palmer, Karen L., 2012. "Soft and hard price collars in a cap-and-trade system: A comparative analysis," Journal of Environmental Economics and Management, Elsevier, vol. 64(2), pages 183-198.
  • Handle: RePEc:eee:jeeman:v:64:y:2012:i:2:p:183-198
    DOI: 10.1016/j.jeem.2011.11.004
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    References listed on IDEAS

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