We compare a carbon tax and a cap and trade mechanism in their propensity to induce carbon-reducing technological adoption, when investments are undertaken under uncertainty. In our setting, risk-neutral firms affect the variance and the correlation of the shocks they are exposed to through...

This paper develops a methodology aimed at assisting policymakers in selecting the optimal policy option to support the carbon price within the ETS. We consider different policy proposals that can support the carbon price either by intervening on the ETS cap (-30%, set-aside, carbon central...