The authors model the introduction of a minimum quality standard in a vertically differentiated duopoly. They extend the literature by determining the standard endogenously, showing that the maximization of social welfare entails an increase in the surplus accruing to consumers served by the low...

We develop a model on the optimal timing of switching from non-renewable to renewable energy sources with endogenous extraction choices under emission taxes and abatement costs. We assume that non-renewable resources are "dirty" inputs and create environmental degradation, while renewable...