As part of the 2019 frequency allocation process for mobile communications, the Federal Network Agency required network providers to achieve a certain level of mobile network coverage for the population. Cooperation between different network providers was also permitted for the first time,...

Die Bundesnetzagentur hat im Rahmen der Frequenzvergabe 2019 für den Mobilfunk die Netzanbieter verpflichtet, einen bestimmten Versorgungsgrad der Bevölkerung zu erreichen. Erstmals wurden dabei auch Kooperationen zwischen verschiedenen Netzanbietern erlaubt. Es wurde jedoch offengelassen,...

In current power markets, the bulk of electricity is sold wholesale and transported to consumers via long-distance transmission lines. Recently, decentralized local power markets have evolved, often as isolated networks based on solar generation. We analyze strategic pricing, investment, and...

We analyze a vertical structure with an upstream monopoly and two downstream retailers. Demand is uncertain but each retailer receives an informative private signal about the state of the demand. We construct an incentive compatible and ex ante balanced mechanism which induces the retailers to...

We analyze a stylized model of the world grain market characterized by a small oligopoly of traders with market power on both the supply and demand side. Crops are stochastic and exporting countries can impose export tariffs to protect domestic food prices. We show that export tariffs are...