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Taxes and Trading versus Intensity Standards: Second-Best Environmental Policies with Incomplete Regulation (Leakage) or Market Power

Stephen Holland ()

No 15262, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: This paper investigates whether an emissions tax (equivalent to an emissions cap) maximizes social welfare (defined as the sum of consumer and producer surplus) in the presence of incomplete regulation (leakage) or market power by analyzing an intensity standard regulating emissions per unit of output. With no other market failures, an intensity standard indeed yields lower welfare, although combining it with a consumption tax eliminates this discrepancy. For incomplete regulation, I show that under certain conditions an intensity standard can yield higher welfare than any emissions tax (including the optimal emissions tax). This result persists even with the addition of a consumption tax, which ameliorates output distortions and can sometimes help the intensity standard attain the first best (when an emissions tax/consumption tax combination cannot). Comparing intensity standards to output-based updating shows that the latter yields higher welfare because of its additional flexibility. Finally, I show that with market power an intensity standard can yield higher welfare than the optimal emissions tax. The intuition of these results is relatively straightforward. The weakness of an intensity standard is that it relies more on substitution effects than output effects to reduce emissions. With incomplete regulation or market power, this disadvantage may be helpful since leakage may offset gains from reducing output and since market power already inefficiently reduces output.

JEL-codes: H23 Q40 Q50 (search for similar items in EconPapers)
Date: 2009-08
New Economics Papers: this item is included in nep-acc, nep-ene, nep-env, nep-mic and nep-reg
Note: EEE PE
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Published as “Taxes and Trading versus Intensity Standards: Second - Best Environmental Policies with Incomplete Regulation (Leakage) or Market Power” Journal of Environmental Economics and Management (2012) 63 (3): 375 – 387 .

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