Several competition authorities have accused petrol retailers of engaging in collusive conduct, which results in alleged “excessive” prices as well as simultaneous price setting across filling stations. However, petrol retailers must exert a substantial amount of market power if they are to...

Do we have effective competition between the gasoline's big five oligopolists (Aral, Shell, Esso, Total and Jet) and fringe gasoline stations? Using 2014 Market Transparency price data from 66 cities with populations between 60,000 and 100,000, we analyze which brands lead price increases, the...

This paper evaluates four publicly discussed policy options to mitigate market power in the German wholesale electricity market. These four options are: a regulatory solution favoured by the Federal Ministry for Economics and Technology, the implementation of a day-ahead flow-based market...

Multimarket contact is perceived to be one of those factors, which can facilitate and sustain implicit collusive (cooperative) arrangements. This paper attempts to develop new approaches to study the interdependence of firm behaviour across markets, especially in the context of differentiated...

In this paper we report the findings of an experiment that examines the effects of automated mitigation procedures (AMP) on capacity investment prices of suppliers in a wholesale electricity market. Specifically, in a 2 x 2 design we examine the effects of strong and weak market power incentives...

(Why) do prices and inflation rates differ within the euro area? We study the relevance of a national border for grocery prices in the otherwise homogenous and highly integrated border region of Austria and Germany. Using transaction data on prices and quantities from a large household panel, we...