Government analysts have long used discount rates based on investment rates of return to approximate the effect of capital displacement. However, we show how this approach is not well grounded in economic theory and produces highly biased results, particularly in the context of decisions...

A sizeable number of papers beginning with Roberts and Spence (1976) have studied the use of price floors and ceilings (or "collars") to manage prices in tradable permit markets. In contrast, economists have only recently begun examining polices to manage quantities under a pollution tax....

Tradable performance standards are widely used sectoral regulatory policies. Examples include the US lead phasedown, fuel economy standards for automobiles, renewable portfolio standards, low carbon fuel standards, and--most recently--China's new national carbon market. At the same time, theory...

On efficiency grounds, the economics community has to date tended to emphasize price-based policies to address climate change -- such as taxes or a "safety-valve" price ceiling for cap-and-trade -- while environmental advocates have sought a more clear quantitative limit on emissions. This paper...

Using commodity futures contract and spot prices, we estimate the incidence of the US ethanol subsidy accruing to corn farmers, ethanol producers, gasoline blenders, and gasoline consumers at expiration in 2011. We find compelling evidence that ethanol producers captured two-thirds of the...

Carbon markets are substantial and they are expanding. There are many lessons from experiences over the past eight years: fewer free allowances, better management of market-sensitive information, and a recognition that trading systems require adjustments that have consequences for market...

This paper provides an exhaustive review of critical issues in the design of climate mitigation policy by pulling together key findings and controversies from diverse literatures on mitigation costs, damage valuation, policy instrument choice, technological innovation, and international climate...

Seminal work by Weitzman (1974) revealed prices are preferred to quantities when marginal benefits are relatively flat compared to marginal costs. We extend this comparison to indexed policies, where quantities are proportional to an index, such as output. We find that policy preferences hinge...

The choice of discount rate has a significant impact on net benefit estimates when costs today have benefits over long time horizons. Standard U.S. government practice for cost-benefit analysis is to bound such analysis using two alternative rates. These rates are meant to represent the rate of...

This paper considers how policy updates and trading of regulated quantities over time changes the traditional comparative advantage of prices versus quantities. Quantity regulation that can be traded over time leads firms to set current prices equal to expected future prices. A government...