Nous situons notre analyse dans le contexte de l'ouverture a la concurrence d'un bien reseau dans lequel l'operateur historique, integre verticalement, gere en monopole l'infrastructure et est concurrence sur les sectuers des services. La qualite du bien reseau est le minimum des qualite de...

Deux faits stylises majeurs ont ete mis en evidence en Economie geographique. D'une part, la croissance economique s'accompagne d'une augmentation des inegalites regionales au sein d'un pays. D'autre part, les externalites technologiques restent localisees dans l'espace. Cet article s'attache,...

This paper considers a model of two interconnected networks with different qualities. There are call externalities in the sense that consumers value calls they send and receive. Networks compete in two part tariffs. We show that call externalities create private incentives for each competitor to...

This paper studies competition between Managed Care Organizations (MCOs) and Conventional Insurers. Most of the time, MCOs sign exclusive contracts with providers and these vertical restrictions associated to differentiation in the providers’ market imply a risk segmentation. Taking into...

This paper studies the links between non-renewable and intermittent renewable energy sources in the production of electricity. We argue that the relationship between the price of natural gas and investments in solar and wind capacity is represented by a bell-shaped curve, as opposed to being...

In this paper, we analyze the strategic function of gas storage focusing on how gas storage decisions impact competition between gas companies on both spot and downstream markets. Using a two-tier oligopolistic structure, we first show that gas storage is actually used strategically even in a...