This paper provides a simple procedure that can be used in empirical works aimed at uncovering the preferences of regulators over consumers. The inverting procedure proposed by Ross (1984) for the case of a fully informed regulator is adapted to a regulatory situation characterised by price cap...

We show how corrective taxation can improve the efficiency properties of tradable quotas systems affected by market power. Indeed, when only a subset of firms are price takers while the remaining firms enjoy market power, we show that, if the regulator sets an ad hoc taxation on firms' traded...