November 22, 2009

Emissions Targets and the Real Business Cycle: Intensity Targets versus Caps or Taxes

by Carolyn Fischer and Michael R. Springborn

- For reducing greenhouse gas emissions, intensity targets are attracting interest as a flexible mechanism that would better allow for economic growth than emissions caps. For the same expected emissions, however, the economic responses to unexpected productivity shocks differ. Using a real business cycle model, we find that certainty-equivalent intensity targets maintain higher levels of labor, capital, and output than other policies, with lower expected costs and no more volatility than with no policy.

Fischer, C. and M.R. Springborn (2009). "Emissions Targets and the Real Business Cycle: Intensity Targets versus Caps or Taxes." RFF Discussion Paper 09-47, Nov 2009.