A carbon tax is a promising tool for discouraging the greenhouse gas emissions that cause climate change. In principle, a well-designed tax could reduce the risk of climate change, minimize the cost of emissions reductions, encourage innovation in low-carbon technologies, and raise new public...

Within the federal government, official decisions are a product of both substantive judgments and institutional constraints. With respect to discounting, current practice is governed by OMB Circular A-4 and the 2010 and 2013 technical support documents of the Interagency Working Group on the...

At high enough greenhouse gas concentrations, climate change might conceivably cause catastrophic damages with small but non-negligible probabilities. If the bad tail of climate damages is sufficiently fat, and if the coefficient of relative risk aversion is greater than one, the...

Disparate commitments to reduce GHG emissions create demands for border carbon adjustments (BCAs) to prevent negative competitive effects and carbon leakage. BCAs that accomplish economic objectives and are administratively feasible, WTO-legal, and politically acceptable may be impossible. BCAs...

I use an applied general equilibrium model to quantify the influence of a new, theoretical channel for carbon leakage effects, as identified by Fullerton, Karney and Baylis (2012). I first produce parameterizations of the model that generate a close correspondence with the theory, isolating the...

A popular environmental policy is to pay forest owners for avoiding deforestation on their land. This is an example of "payments for ecosystem services" (PES). This paper shows that liquidity constraints can limit the effectiveness of PES programs. If an individual would have cut down trees to...

We extend the model of Fullerton, Karney, and Baylis (2012) to explore cost-effectiveness of unilateral climate policy in the presence of leakage. We ignore the welfare gain from reducing greenhouse gas emissions, and focus on the welfare cost of the emissions tax or permit scheme. Whereas that...

Emissions restrictions in one region may decrease emissions elsewhere (negative leakage), as increased demand for capital and labor to abate emissions in constrained regions may reduce output in unconstrained regions. We investigate leakage in computable general equilibrium (CGE) models under...

US climate policy is unfolding under the Clean Air Act. Mobile source and construction permitting regulations are in place. Most important, EPA and the states will determine the form and stringency of the regulations for power plants. Various approaches would create an implicit price on emitting...