We consider a dynamic two-period model where two firms offer products that are differentiated a la Hotelling. Consumers purchase products in a first period, and in a second period consumers are locked-in to their first-period choice of producer with a switching cost. In the second period firms...

Received literature have shown that if competing networks are restricted to linear and uniform pricing, high access charges can facilitate collusion; a result that breaks down if we allow for non-linear and discriminatory pricing, however. In this paper we add unbalanced calling pattern to the...

System reliability is a key aspect of electricity supply, and the ability to maintain system reliability thus is an important aspect of a liberalised electricity market. But system reliability can be ensured only if there is sufficient reserve capacity at all times. In a liberalised electricity...

The supply shock that hit the Nordic electricity market in 2002-2003 put the market to a severe test. A sharp reduction in inflow to hydro reservoirs during the normally wet months of late autumn pushed electricity prices to unprecedented levels. We take this event as the starting point for...

We analyse how the internal organisation of firms affects the correspondence between private and social incentives for horizontal merger. Applying a model of endogenous merger formation in a three-firm asymmetric Cournot industry, we contrast the cases of entrepreneurial and managerial firms....

The general opinion among power industry representatives and electricity market analysts is that the Nordic electricity market has worked well. The purpose of this paper is to explore why the Nordic electricity market has performed well and to consider to what extent the Nordic experiences are...

We formulate an analytic equilibrium model for simultaneously functioning electricity market and a market for Green Certificates. The major focus of the paper is the effect of market power in a Green Certificate system. One of the main results from the analysis is that the certificate system...

This paper investigates a retailer's decision to introduce a private label and asks how the retailer's access to a private label may affect the pricing of substitute national brands. We consider a model with two vertically differentiated national brand manufacturers that negotiate sequentially...