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The B.E. Journal of Economic Analysis & Policy

Editor-in-Chief: Jürges, Hendrik / Ludwig, Sandra

Ed. by Auriol , Emmanuelle / Brunner, Johann / Fleck, Robert / Friebel, Guido / Requate, Till / Tsui, Kevin / Wichardt, Philipp / Zulehner, Christine

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Market Power Effects on Market Equilibrium in Ambient Permit Markets

Sonia Schwartz1

1C.A.E., Université Paul Cézanne, Aix-Marseille III,

Citation Information: The B.E. Journal of Economic Analysis & Policy. Volume 7, Issue 1, ISSN (Online) 1935-1682, DOI: 10.2202/1935-1682.1433, February 2007

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This paper discusses market power effects in ambient permit markets. We consider a dominant firm in a position to exert market power in several markets. A first conclusion is that the distortion observed on manipulated markets spreads to other markets. We find that the manipulated prices could be lower than their competitive level if the dominant firm acts as a monopolist, and higher if it acts as a monopsonist. We show that the efficient outcome is not reached, except if the number of firms is the same as the number of markets whatever the initial endowment of permits. If not, the efficient outcome can be reached by means of initial endowments.

Keywords: ambient permits; market power; initial endowments; transfer coefficients

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