We estimate a structural model of OECD countries in which GDP and CO2 emissions are endogenous. We use the estimated model to simulate the price of tradable CO2 permits and the efficiency gains from trade. Our estimated prices are high, relative to previous estimates, and the efficiency gains...

We study the optimal quota sequence, in a stationary environment, where a regulator and a non-strategic firm have asymmetric information. The regulator is able to learn about the unknown cost parameter by using a quota that is slack with positive probability. It is never optimal for the...

We study a model in which the level of environmental regulation depends on abatement costs, which depend on aggregate levels of investment in abatement capital. Firms are non-strategic. When emissions quotas are not tradable, there are multiple competitive equilibria to the investment problem....