After Bonn and Marrakech it is likely that emission trading will be realized in the near future. Major influences on the permit market are the institutional details, the participation structure and the treatment of hot air. Different scenarios do not only differ in their implications for the...

Marginal abatement cost curves (MACCs) are a favorite instrument to analyze international emissions trading. This paper focusses on the question of how to define MACCs in a general equilibrium context where the global abatement level influences energy prices and in turn national MACCs. We...