There is concern that prices in a market for Green Certificates (GCs) primarily based on volatile wind power will fluctuate excessively, leading to corresponding volatility of electricity prices. Applying a rational expectations simulation model of competitive storage and speculation of GCs the...

The Kyoto Protocol allows international emissions trading, which could take place in three different forms: government, permit, or credit trading. Which trading system is chosen is likely to depend on the preferences of several interest groups. In this paper, we give empirical evidence on the...

Consumers are assumed to be unable to discriminate between two goods of differing qualities provided that the qualities are close enough. It is shown that in a vertically differentiated duopoly this results in multiple equilibria. Demand for each firm's good is reduced. Firms' profits may be...

The answer is no. Although naive intuition may suggest the opposite, uncertainty about costs in the homogeneous-good Bertrand model intensifies competition: it lowers price and raises total surplus (but also makes profits go up). For some economic environments, this is implied by Hansen’s...

We show that there is a unique correlated equilibrium, identical to the unique Nash equilibrium, in the classic Bertrand oligopoly model with homogenous goods. This provides a theoretical underpinning for the so-called "Bertrand paradox" and also generalizes earlier results on mixed-strategy...

Consumers have bounded perception and treat similar goods as homogeneous. The interaction between this bias and the structure of firms is studied in a vertically differentiated duopoly with market entry. With fixed costs of quality, natural monopoly and entry deterrence occurs at lower entry...

Reciprocal customers may disproportionately improve the performance of markets for experience goods. Reciprocal customers reward (punish) firms for providing good (bad) quality by upholding (terminating) the customer relation. This may induce firms to provide good quality which, in turn, may...

Which shape is market competition likely to exhibit? This question is addressed in the present paper, where firms can choose whether to act as quantity or price setters, whether to move early or delay as long as possible at the market stage and finally whether to be entrepreneurial or...

In a two period strategic model of entry deterrence (a la Dixit, 1980) where the incumbent firm moves before the entrant by installing capacity for production, in a (perfect) equilibrium excess capacity is not observed under a deterministic demand. The question is: Does this result remain valid...

In this paper we study the effects of opening an economy, with increasing returns in the production of non traded goods, on the existence of multiple Pareto-ranked stationary equilibria, local indeterminacy and bifurcations. We consider a standard Overlapping Generation Model of a small open...