The starting point of this paper is a mixed oligopoly market consisting of n privately owned profit maximizing firms and 1 state-owned welfare maximizing firm. Motivated by the trend of mergers and acquisitions in the liberalized electricity markets, and by the debate about public or private...

In this paper we set out to investigate the price and quantity fluctuations in Western Denmark, which took place during the winter season 2002-2003. This was a period, which exhibited critical supply conditions in the Nordic area due to a shortage of hydropower. On average, the market in Western...

We analyze the dynamic interaction between imitation and myopic optimization in an environment of changing marginal payoffs. Focusing on finite irreducible environments, we unfold a trade-off between the degree of interaction and the size of environmental shocks. The optimizer outperforms the...

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...

This paper analyses the design of hospital reimbursement in an industry with imperfect competition, scarcity of labour and socially costly government transfers. We find that prospective payment not only increases the quantity of hospital care, but also the quality if quality improvements are...

This paper studies measurement of welfare e¤ects, transient and permanent, of stabilizing or deregulating prices in Cobweb-like settings. As in Cobweb-models, producers must commit inputs in face of uncertainty. Here, however, we consider producers who are concerned with adaptations of inputs...

We provide necessary condition for Pareto optimum in economies where tastes or technologies may be nonconvex, nonsmooth, and affected by externalities. Firms can pursue own objectives, much like the consumers. Infinite-dimensional commodity spaces are accomodated. Public goods and material...

To be able to describe informal rural credit markets, we apply the Brock and Scheinkman model of a price setting and capacity constrained oligopoly, where firms tacitly collude on monopoly pricing. We generalise the model to allow for third-degree price discrimination. The interval of aggregate...

We test two alternative models of interest rates determination in informal rural credit markets, using data from a cross-sectional national household survey from Nepal. We find strong support for a full information, capacity-constrained and repeated oligopoly model with third-degree price...

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...