Pigovian transport pricing was implemented in a large-scale field experiment in urban areas of Switzerland. The pricing varied across time, space and mode of transport. One third of the participants were given a financial incentive to reduce their external costs of transport, whereas others were...

We analyze the strategic interaction of regional and federal governments using a model that includes fiscal externalities in the form of inter-regional capital tax competition and technical externalities in the form of inter-regional spillovers. The federal government aims to correct for these...

We implement Pigovian transport pricing in a field experiment in urban agglomerations of Switzerland over the course of 8 weeks. The pricing considers external costs from climate damages, health outcomes and congestion and varies across time, space and mode of transport. The treatment reduces...

We study the introduction of new technologies when their costs are subject to idiosyncratic uncertainty and can only be fully learned through individual experience. We set up a dynamic model of clean experience goods that replace old polluting consumption options and show how optimal regulation...